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Title: The Spectral Energy Distribution of Fermi bright blazars

Abstract

We have conducted a detailed investigation of the broadband spectral properties of the γ-ray selected blazars of the Fermi LAT Bright AGN Sample (LBAS). By combining our accurately estimated Fermi γ-ray spectra with Swift, radio, infra-red, optical, and other hard X-ray/γ-ray data, collected within 3 months of the LBAS data taking period, we were able to assemble high-quality and quasi-simultaneous spectral energy distributions (SED) for 48 LBAS blazars. The SED of these γ-ray sources is similar to that of blazars discovered at other wavelengths, clearly showing, in the usual log ν-log ν F ν representation, the typical broadband spectral signatures normally attributed to a combination of low-energy synchrotron radiation followed by inverse Compton emission of one or more components. Here, we have used these SED to characterize the peak intensity of both the low- and the high-energy components. The results have been used to derive empirical relationships that estimate the position of the two peaks from the broadband colors (i.e., the radio to optical, αro, and optical to X-ray, αox, spectral slopes) and from the γ-ray spectral index. Our data show that the synchrotron peak frequency (ν S peak) is positioned between 1012.5 and 1014.5 Hz in broad-lined flat spectrummore » radio quasars (FSRQs) and between 1013 and 1017 Hz in featureless BL Lacertae objects. We find that the γ-ray spectral slope is strongly correlated with the synchrotron peak energy and with the X-ray spectral index, as expected at first order in synchrotron-inverse Compton scenarios. However, simple homogeneous, one-zone, synchrotron self-Compton (SSC) models cannot explain most of our SED, especially in the case of FSRQs and low energy peaked (LBL) BL Lacs. More complex models involving external Compton radiation or multiple SSC components are required to reproduce the overall SED and the observed spectral variability. While more than 50% of known radio bright high energy peaked (HBL) BL Lacs are detected in the LBAS sample, only less than 13% of known bright FSRQs and LBL BL Lacs are included. This suggests that the latter sources, as a class, may be much fainter γ-ray emitters than LBAS blazars, and could in fact radiate close to the expectations of simple SSC models. We categorized all our sources according to a new physical classification scheme based on the generally accepted paradigm for Active Galactic Nuclei and on the results of this SED study. Since the LAT detector is more sensitive to flat spectrum γ-ray sources, the correlation between ν S peak and γ-ray spectral index strongly favors the detection of high energy peaked blazars, thus explaining the Fermi overabundance of this type of sources compared to radio and EGRET samples. Finally, this selection effect is similar to that experienced in the soft X-ray band where HBL BL Lacs are the dominant type of blazars.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; National Aeronautics and Space Administration (NASA)
Contributing Org.:
The Fermi-LAT Collaboration
OSTI Identifier:
1357557
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal
Additional Journal Information:
Journal Volume: 716; Journal Issue: 1; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; BL Lacertae objects: general; galaxies: active; gamma rays: galaxies; quasars: general; radiation mechanisms: non-thermal

Citation Formats

Abdo, A. A., Ackermann, M., Agudo, I., Ajello, M., Aller, H. D., Aller, M. F., Angelakis, E., Arkharov, A. A., Axelsson, M., Bach, U., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Benitez, E., Berdyugin, A., Berenji, B., Blandford, R. D., Bloom, E. D., Boettcher, M., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Burrows, D., Buson, S., Caliandro, G. A., Calzoletti, L., Cameron, R. A., Capalbi, M., Caraveo, P. A., Carosati, D., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Çelik, Ö., Charles, E., Chaty, S., Chekhtman, A., Chen, W. P., Chiang, J., Chincarini, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Colafrancesco, S., Cominsky, L. R., Conrad, J., Costamante, L., Cutini, S., D'ammando, F., Deitrick, R., D'Elia, V., Dermer, C. D., de Angelis, A., de Palma, F., Digel, S. W., Donnarumma, I., Silva, E. do Couto e., Drell, P. S., Dubois, R., Dultzin, D., Dumora, D., Falcone, A., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Forné, E., Fortin, P., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gómez, J. L., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giommi, P., Giordano, F., Giuliani, A., Glanzman, T., Godfrey, G., Grenier, I. A., Gronwall, C., Grove, J. E., Guillemot, L., Guiriec, S., Gurwell, M. A., Hadasch, D., Hanabata, Y., Harding, A. K., Hayashida, M., Hays, E., Healey, S. E., Heidt, J., Hiriart, D., Horan, D., Hoversten, E. A., Hughes, R. E., Itoh, R., Jackson, M. S., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Jorstad, S. G., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kennea, J., Kerr, M., Kimeridze, G., Knödlseder, J., Kocian, M. L., Kopatskaya, E. N., Koptelova, E., Konstantinova, T. S., Kovalev, Y. Y., Kovalev, Yu. A., Kurtanidze, O. M., Kuss, M., Lande, J., Larionov, V. M., Latronico, L., Leto, P., Lindfors, E., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Marchegiani, P., Marscher, A. P., Marshall, F., Max-Moerbeck, W., Mazziotta, M. N., McConville, W., McEnery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nestoras, I., Nilsson, K., Nizhelsky, N. A., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Ojha, R., Omodei, N., Orlando, E., Ormes, J. F., Osborne, J., Ozaki, M., Pacciani, L., Padovani, P., Pagani, C., Page, K., Paneque, D., Panetta, J. H., Parent, D., Pasanen, M., Pavlidou, V., Pelassa, V., Pepe, M., Perri, M., Pesce-Rollins, M., Piranomonte, S., Piron, F., Pittori, C., Porter, T. A., Puccetti, S., Rahoui, F., Rainò, S., Raiteri, C., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Richards, J. L., Ritz, S., Rochester, L. S., Rodriguez, A. Y., Romani, R. W., Ros, J. A., Roth, M., Roustazadeh, P., Ryde, F., Sadrozinski, H. F. -W., Sadun, A., Sanchez, D., Sander, A., Parkinson, P. M. Saz, Scargle, J. D., Sellerholm, A., Sgrò, C., Shaw, M. S., Sigua, L. A., Siskind, E. J., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Starck, J. -L., Stevenson, M., Stratta, G., Strickman, M. S., Suson, D. J., Tajima, H., Takahashi, H., Takahashi, T., Takalo, L. O., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Verrecchia, F., Vilchez, N., Villata, M., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Ylinen, T., Zensus, J. A., Zhekanis, G. V., and Ziegler, M. The Spectral Energy Distribution of Fermi bright blazars. United States: N. p., 2010. Web. doi:10.1088/0004-637X/716/1/30.
Abdo, A. A., Ackermann, M., Agudo, I., Ajello, M., Aller, H. D., Aller, M. F., Angelakis, E., Arkharov, A. A., Axelsson, M., Bach, U., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Benitez, E., Berdyugin, A., Berenji, B., Blandford, R. D., Bloom, E. D., Boettcher, M., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Burrows, D., Buson, S., Caliandro, G. A., Calzoletti, L., Cameron, R. A., Capalbi, M., Caraveo, P. A., Carosati, D., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Çelik, Ö., Charles, E., Chaty, S., Chekhtman, A., Chen, W. P., Chiang, J., Chincarini, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Colafrancesco, S., Cominsky, L. R., Conrad, J., Costamante, L., Cutini, S., D'ammando, F., Deitrick, R., D'Elia, V., Dermer, C. D., de Angelis, A., de Palma, F., Digel, S. W., Donnarumma, I., Silva, E. do Couto e., Drell, P. S., Dubois, R., Dultzin, D., Dumora, D., Falcone, A., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Forné, E., Fortin, P., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gómez, J. L., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giommi, P., Giordano, F., Giuliani, A., Glanzman, T., Godfrey, G., Grenier, I. A., Gronwall, C., Grove, J. E., Guillemot, L., Guiriec, S., Gurwell, M. A., Hadasch, D., Hanabata, Y., Harding, A. K., Hayashida, M., Hays, E., Healey, S. E., Heidt, J., Hiriart, D., Horan, D., Hoversten, E. A., Hughes, R. E., Itoh, R., Jackson, M. S., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Jorstad, S. G., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kennea, J., Kerr, M., Kimeridze, G., Knödlseder, J., Kocian, M. L., Kopatskaya, E. N., Koptelova, E., Konstantinova, T. S., Kovalev, Y. Y., Kovalev, Yu. A., Kurtanidze, O. M., Kuss, M., Lande, J., Larionov, V. M., Latronico, L., Leto, P., Lindfors, E., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Marchegiani, P., Marscher, A. P., Marshall, F., Max-Moerbeck, W., Mazziotta, M. N., McConville, W., McEnery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nestoras, I., Nilsson, K., Nizhelsky, N. A., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Ojha, R., Omodei, N., Orlando, E., Ormes, J. F., Osborne, J., Ozaki, M., Pacciani, L., Padovani, P., Pagani, C., Page, K., Paneque, D., Panetta, J. H., Parent, D., Pasanen, M., Pavlidou, V., Pelassa, V., Pepe, M., Perri, M., Pesce-Rollins, M., Piranomonte, S., Piron, F., Pittori, C., Porter, T. A., Puccetti, S., Rahoui, F., Rainò, S., Raiteri, C., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Richards, J. L., Ritz, S., Rochester, L. S., Rodriguez, A. Y., Romani, R. W., Ros, J. A., Roth, M., Roustazadeh, P., Ryde, F., Sadrozinski, H. F. -W., Sadun, A., Sanchez, D., Sander, A., Parkinson, P. M. Saz, Scargle, J. D., Sellerholm, A., Sgrò, C., Shaw, M. S., Sigua, L. A., Siskind, E. J., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Starck, J. -L., Stevenson, M., Stratta, G., Strickman, M. S., Suson, D. J., Tajima, H., Takahashi, H., Takahashi, T., Takalo, L. O., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Verrecchia, F., Vilchez, N., Villata, M., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Ylinen, T., Zensus, J. A., Zhekanis, G. V., & Ziegler, M. The Spectral Energy Distribution of Fermi bright blazars. United States. https://doi.org/10.1088/0004-637X/716/1/30
Abdo, A. A., Ackermann, M., Agudo, I., Ajello, M., Aller, H. D., Aller, M. F., Angelakis, E., Arkharov, A. A., Axelsson, M., Bach, U., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Benitez, E., Berdyugin, A., Berenji, B., Blandford, R. D., Bloom, E. D., Boettcher, M., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Burrows, D., Buson, S., Caliandro, G. A., Calzoletti, L., Cameron, R. A., Capalbi, M., Caraveo, P. A., Carosati, D., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Çelik, Ö., Charles, E., Chaty, S., Chekhtman, A., Chen, W. P., Chiang, J., Chincarini, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Colafrancesco, S., Cominsky, L. R., Conrad, J., Costamante, L., Cutini, S., D'ammando, F., Deitrick, R., D'Elia, V., Dermer, C. D., de Angelis, A., de Palma, F., Digel, S. W., Donnarumma, I., Silva, E. do Couto e., Drell, P. S., Dubois, R., Dultzin, D., Dumora, D., Falcone, A., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Forné, E., Fortin, P., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gómez, J. L., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giommi, P., Giordano, F., Giuliani, A., Glanzman, T., Godfrey, G., Grenier, I. A., Gronwall, C., Grove, J. E., Guillemot, L., Guiriec, S., Gurwell, M. A., Hadasch, D., Hanabata, Y., Harding, A. K., Hayashida, M., Hays, E., Healey, S. E., Heidt, J., Hiriart, D., Horan, D., Hoversten, E. A., Hughes, R. E., Itoh, R., Jackson, M. S., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Jorstad, S. G., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kennea, J., Kerr, M., Kimeridze, G., Knödlseder, J., Kocian, M. L., Kopatskaya, E. N., Koptelova, E., Konstantinova, T. S., Kovalev, Y. Y., Kovalev, Yu. A., Kurtanidze, O. M., Kuss, M., Lande, J., Larionov, V. M., Latronico, L., Leto, P., Lindfors, E., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Marchegiani, P., Marscher, A. P., Marshall, F., Max-Moerbeck, W., Mazziotta, M. N., McConville, W., McEnery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nestoras, I., Nilsson, K., Nizhelsky, N. A., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Ojha, R., Omodei, N., Orlando, E., Ormes, J. F., Osborne, J., Ozaki, M., Pacciani, L., Padovani, P., Pagani, C., Page, K., Paneque, D., Panetta, J. H., Parent, D., Pasanen, M., Pavlidou, V., Pelassa, V., Pepe, M., Perri, M., Pesce-Rollins, M., Piranomonte, S., Piron, F., Pittori, C., Porter, T. A., Puccetti, S., Rahoui, F., Rainò, S., Raiteri, C., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Richards, J. L., Ritz, S., Rochester, L. S., Rodriguez, A. Y., Romani, R. W., Ros, J. A., Roth, M., Roustazadeh, P., Ryde, F., Sadrozinski, H. F. -W., Sadun, A., Sanchez, D., Sander, A., Parkinson, P. M. Saz, Scargle, J. D., Sellerholm, A., Sgrò, C., Shaw, M. S., Sigua, L. A., Siskind, E. J., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Starck, J. -L., Stevenson, M., Stratta, G., Strickman, M. S., Suson, D. J., Tajima, H., Takahashi, H., Takahashi, T., Takalo, L. O., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Verrecchia, F., Vilchez, N., Villata, M., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Ylinen, T., Zensus, J. A., Zhekanis, G. V., and Ziegler, M. Thu . "The Spectral Energy Distribution of Fermi bright blazars". United States. https://doi.org/10.1088/0004-637X/716/1/30. https://www.osti.gov/servlets/purl/1357557.
@article{osti_1357557,
title = {The Spectral Energy Distribution of Fermi bright blazars},
author = {Abdo, A. A. and Ackermann, M. and Agudo, I. and Ajello, M. and Aller, H. D. and Aller, M. F. and Angelakis, E. and Arkharov, A. A. and Axelsson, M. and Bach, U. and Baldini, L. and Ballet, J. and Barbiellini, G. and Bastieri, D. and Baughman, B. M. and Bechtol, K. and Bellazzini, R. and Benitez, E. and Berdyugin, A. and Berenji, B. and Blandford, R. D. and Bloom, E. D. and Boettcher, M. and Bonamente, E. and Borgland, A. W. and Bregeon, J. and Brez, A. and Brigida, M. and Bruel, P. and Burnett, T. H. and Burrows, D. and Buson, S. and Caliandro, G. A. and Calzoletti, L. and Cameron, R. A. and Capalbi, M. and Caraveo, P. A. and Carosati, D. and Casandjian, J. M. and Cavazzuti, E. and Cecchi, C. and Çelik, Ö. and Charles, E. and Chaty, S. and Chekhtman, A. and Chen, W. P. and Chiang, J. and Chincarini, G. and Ciprini, S. and Claus, R. and Cohen-Tanugi, J. and Colafrancesco, S. and Cominsky, L. R. and Conrad, J. and Costamante, L. and Cutini, S. and D'ammando, F. and Deitrick, R. and D'Elia, V. and Dermer, C. D. and de Angelis, A. and de Palma, F. and Digel, S. W. and Donnarumma, I. and Silva, E. do Couto e. and Drell, P. S. and Dubois, R. and Dultzin, D. and Dumora, D. and Falcone, A. and Farnier, C. and Favuzzi, C. and Fegan, S. J. and Focke, W. B. and Forné, E. and Fortin, P. and Frailis, M. and Fuhrmann, L. and Fukazawa, Y. and Funk, S. and Fusco, P. and Gómez, J. L. and Gargano, F. and Gasparrini, D. and Gehrels, N. and Germani, S. and Giebels, B. and Giglietto, N. and Giommi, P. and Giordano, F. and Giuliani, A. and Glanzman, T. and Godfrey, G. and Grenier, I. A. and Gronwall, C. and Grove, J. E. and Guillemot, L. and Guiriec, S. and Gurwell, M. A. and Hadasch, D. and Hanabata, Y. and Harding, A. K. and Hayashida, M. and Hays, E. and Healey, S. E. and Heidt, J. and Hiriart, D. and Horan, D. and Hoversten, E. A. and Hughes, R. E. and Itoh, R. and Jackson, M. S. and Jóhannesson, G. and Johnson, A. S. and Johnson, W. N. and Jorstad, S. G. and Kadler, M. and Kamae, T. and Katagiri, H. and Kataoka, J. and Kawai, N. and Kennea, J. and Kerr, M. and Kimeridze, G. and Knödlseder, J. and Kocian, M. L. and Kopatskaya, E. N. and Koptelova, E. and Konstantinova, T. S. and Kovalev, Y. Y. and Kovalev, Yu. A. and Kurtanidze, O. M. and Kuss, M. and Lande, J. and Larionov, V. M. and Latronico, L. and Leto, P. and Lindfors, E. and Longo, F. and Loparco, F. and Lott, B. and Lovellette, M. N. and Lubrano, P. and Madejski, G. M. and Makeev, A. and Marchegiani, P. and Marscher, A. P. and Marshall, F. and Max-Moerbeck, W. and Mazziotta, M. N. and McConville, W. and McEnery, J. E. and Meurer, C. and Michelson, P. F. and Mitthumsiri, W. and Mizuno, T. and Moiseev, A. A. and Monte, C. and Monzani, M. E. and Morselli, A. and Moskalenko, I. V. and Murgia, S. and Nestoras, I. and Nilsson, K. and Nizhelsky, N. A. and Nolan, P. L. and Norris, J. P. and Nuss, E. and Ohsugi, T. and Ojha, R. and Omodei, N. and Orlando, E. and Ormes, J. F. and Osborne, J. and Ozaki, M. and Pacciani, L. and Padovani, P. and Pagani, C. and Page, K. and Paneque, D. and Panetta, J. H. and Parent, D. and Pasanen, M. and Pavlidou, V. and Pelassa, V. and Pepe, M. and Perri, M. and Pesce-Rollins, M. and Piranomonte, S. and Piron, F. and Pittori, C. and Porter, T. A. and Puccetti, S. and Rahoui, F. and Rainò, S. and Raiteri, C. and Rando, R. and Razzano, M. and Reimer, A. and Reimer, O. and Reposeur, T. and Richards, J. L. and Ritz, S. and Rochester, L. S. and Rodriguez, A. Y. and Romani, R. W. and Ros, J. A. and Roth, M. and Roustazadeh, P. and Ryde, F. and Sadrozinski, H. F. -W. and Sadun, A. and Sanchez, D. and Sander, A. and Parkinson, P. M. Saz and Scargle, J. D. and Sellerholm, A. and Sgrò, C. and Shaw, M. S. and Sigua, L. A. and Siskind, E. J. and Smith, D. A. and Smith, P. D. and Spandre, G. and Spinelli, P. and Starck, J. -L. and Stevenson, M. and Stratta, G. and Strickman, M. S. and Suson, D. J. and Tajima, H. and Takahashi, H. and Takahashi, T. and Takalo, L. O. and Tanaka, T. and Thayer, J. B. and Thayer, J. G. and Thompson, D. J. and Tibaldo, L. and Torres, D. F. and Tosti, G. and Tramacere, A. and Uchiyama, Y. and Usher, T. L. and Vasileiou, V. and Verrecchia, F. and Vilchez, N. and Villata, M. and Vitale, V. and Waite, A. P. and Wang, P. and Winer, B. L. and Wood, K. S. and Ylinen, T. and Zensus, J. A. and Zhekanis, G. V. and Ziegler, M.},
abstractNote = {We have conducted a detailed investigation of the broadband spectral properties of the γ-ray selected blazars of the Fermi LAT Bright AGN Sample (LBAS). By combining our accurately estimated Fermi γ-ray spectra with Swift, radio, infra-red, optical, and other hard X-ray/γ-ray data, collected within 3 months of the LBAS data taking period, we were able to assemble high-quality and quasi-simultaneous spectral energy distributions (SED) for 48 LBAS blazars. The SED of these γ-ray sources is similar to that of blazars discovered at other wavelengths, clearly showing, in the usual log ν-log ν F ν representation, the typical broadband spectral signatures normally attributed to a combination of low-energy synchrotron radiation followed by inverse Compton emission of one or more components. Here, we have used these SED to characterize the peak intensity of both the low- and the high-energy components. The results have been used to derive empirical relationships that estimate the position of the two peaks from the broadband colors (i.e., the radio to optical, αro, and optical to X-ray, αox, spectral slopes) and from the γ-ray spectral index. Our data show that the synchrotron peak frequency (ν S peak) is positioned between 1012.5 and 1014.5 Hz in broad-lined flat spectrum radio quasars (FSRQs) and between 1013 and 1017 Hz in featureless BL Lacertae objects. We find that the γ-ray spectral slope is strongly correlated with the synchrotron peak energy and with the X-ray spectral index, as expected at first order in synchrotron-inverse Compton scenarios. However, simple homogeneous, one-zone, synchrotron self-Compton (SSC) models cannot explain most of our SED, especially in the case of FSRQs and low energy peaked (LBL) BL Lacs. More complex models involving external Compton radiation or multiple SSC components are required to reproduce the overall SED and the observed spectral variability. While more than 50% of known radio bright high energy peaked (HBL) BL Lacs are detected in the LBAS sample, only less than 13% of known bright FSRQs and LBL BL Lacs are included. This suggests that the latter sources, as a class, may be much fainter γ-ray emitters than LBAS blazars, and could in fact radiate close to the expectations of simple SSC models. We categorized all our sources according to a new physical classification scheme based on the generally accepted paradigm for Active Galactic Nuclei and on the results of this SED study. Since the LAT detector is more sensitive to flat spectrum γ-ray sources, the correlation between ν S peak and γ-ray spectral index strongly favors the detection of high energy peaked blazars, thus explaining the Fermi overabundance of this type of sources compared to radio and EGRET samples. Finally, this selection effect is similar to that experienced in the soft X-ray band where HBL BL Lacs are the dominant type of blazars.},
doi = {10.1088/0004-637X/716/1/30},
journal = {The Astrophysical Journal},
number = 1,
volume = 716,
place = {United States},
year = {2010},
month = {5}
}

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A fast, very-high-energy γ -ray flare from BL Lacertae during a period of multi-wavelength activity in June 2015
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F-GAMMA: Multi-frequency radio monitoring of Fermi blazars : The 2.64 to 43 GHz Effelsberg light curves from 2007–2015⋆
journal, June 2019


Optical characterization of WISE selected blazar candidates
journal, September 2019

  • de Menezes, Raniere; Peña-Herazo, Harold A.; Marchesini, Ezequiel J.
  • Astronomy & Astrophysics, Vol. 630
  • DOI: 10.1051/0004-6361/201936195

Catalog and Statistical Study of X-Ray Selected bl Lacertae Objects
journal, January 2013


INSIGHTS INTO THE HIGH-ENERGY γ-RAY EMISSION OF MARKARIAN 501 FROM EXTENSIVE MULTIFREQUENCY OBSERVATIONS IN THE FERMI ERA
journal, January 2011


Emission from hot dust in the Infrared Spectra of Gamma-Ray Bright Blazars
journal, April 2011

  • Malmrose, Michael P.; Marscher, Alan P.; Jorstad, Svetlana G.
  • The Astrophysical Journal, Vol. 732, Issue 2
  • DOI: 10.1088/0004-637x/732/2/116

Strong new Constraints on the Extragalactic Background Light in the Near- to Mid-Infrared
journal, May 2011


From the Blazar Sequence to the Blazar Envelope: Revisiting the Relativistic jet Dichotomy in Radio-Loud Active Galactic Nuclei
journal, October 2011

  • Meyer, Eileen T.; Fossati, Giovanni; Georganopoulos, Markos
  • The Astrophysical Journal, Vol. 740, Issue 2
  • DOI: 10.1088/0004-637x/740/2/98

THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE
journal, December 2011


Infrared Colors of the Gamma-Ray-Detected Blazars
journal, March 2012


THE SPECTRAL INDEX PROPERTIES OF FERMI BLAZARS
journal, December 2012


LEPTONIC AND HADRONIC MODELING OF FERMI -DETECTED BLAZARS
journal, April 2013


MULTIWAVELENGTH VARIABILITY PROPERTIES OF FERMI BLAZAR S5 0716+714
journal, February 2014


Rotation of the Optical Polarization Angle Associated with the 2008 γ-Ray Flare of Blazar w Comae
journal, September 2014


THE WISE BLAZAR-LIKE RADIO-LOUD SOURCES: AN ALL-SKY CATALOG OF CANDIDATE γ-RAY BLAZARS
journal, October 2014

  • D'Abrusco, R.; Massaro, F.; Paggi, A.
  • The Astrophysical Journal Supplement Series, Vol. 215, Issue 1
  • DOI: 10.1088/0067-0049/215/1/14

Study on Variability and Spectral Properties of Blazar 3C 273 with Long-term Multi-band Optical Monitoring from 2006 to 2015
journal, January 2018

  • Zeng, Wei; Zhao, Qing-Jiang; Dai, Ben-Zhong
  • Publications of the Astronomical Society of the Pacific, Vol. 130, Issue 984
  • DOI: 10.1088/1538-3873/aa9dfe

Model simulation for periodic double-peaked outbursts in blazar OJ 287: binary black hole plus lighthouse effect
journal, April 2015


Evidence for Gamma-Ray Halos Around Active Galactic Nuclei and the First Measurement of Intergalactic Magnetic Fields
journal, September 2010


On the Location of the γ-Ray Outburst Emission in the bl Lacertae Object ao 0235+164 Through Observations Across the Electromagnetic Spectrum
journal, June 2011


WHY HAVE MANY OF THE BRIGHTEST RADIO-LOUD BLAZARS NOT BEEN DETECTED IN GAMMA-RAYS BY FERMI ?
journal, August 2015


A simplified view of blazars: the γ-ray case
journal, March 2013

  • Giommi, P.; Padovani, P.; Polenta, G.
  • Monthly Notices of the Royal Astronomical Society, Vol. 431, Issue 2
  • DOI: 10.1093/mnras/stt305

High energy emission processes in OJ 287 during 2009 flare
journal, June 2013

  • Kushwaha, P.; Sahayanathan, S.; Singh, K. P.
  • Monthly Notices of the Royal Astronomical Society, Vol. 433, Issue 3
  • DOI: 10.1093/mnras/stt904

Are both BL Lacs and pulsar wind nebulae the astrophysical counterparts of IceCube neutrino events?
journal, July 2014

  • Padovani, P.; Resconi, E.
  • Monthly Notices of the Royal Astronomical Society, Vol. 443, Issue 1
  • DOI: 10.1093/mnras/stu1166

A hadronic origin for ultra-high-frequency-peaked BL Lac objects
journal, February 2015

  • Cerruti, M.; Zech, A.; Boisson, C.
  • Monthly Notices of the Royal Astronomical Society, Vol. 448, Issue 1
  • DOI: 10.1093/mnras/stu2691

From the ‘blazar sequence' to unification of blazars and radio galaxies
journal, June 2015

  • Xiong, Dingrong; Zhang, Xiong; Bai, Jinming
  • Monthly Notices of the Royal Astronomical Society, Vol. 451, Issue 3
  • DOI: 10.1093/mnras/stv1038

High-energy neutrino flux from individual blazar flares
journal, September 2019

  • Oikonomou, Foteini; Murase, Kohta; Padovani, Paolo
  • Monthly Notices of the Royal Astronomical Society, Vol. 489, Issue 3
  • DOI: 10.1093/mnras/stz2246

Te-REX: a sample of extragalactic TeV-emitting candidates
journal, December 2019

  • Balmaverde, Barbara; Caccianiga, A.; Della Ceca, R.
  • Monthly Notices of the Royal Astronomical Society, Vol. 492, Issue 3
  • DOI: 10.1093/mnras/stz3532

The radio-γ-ray connection in Fermi blazars: γ-ray-radio flux correlation in blazars
journal, March 2011


The transition between BL Lac objects and flat spectrum radio quasars: FSRQs and BL Lacs
journal, May 2011


H.E.S.S. Monitoring of PKS 2155-304 in 2015 and 2016
journal, January 2019

  • Wierzcholska, Alicja; Zacharias, Michael; Jankowsky, Felix
  • Galaxies, Vol. 7, Issue 1
  • DOI: 10.3390/galaxies7010021

A COMPREHENSIVE STATISTICAL DESCRIPTION OF RADIO-THROUGH- γ -RAY SPECTRAL ENERGY DISTRIBUTIONS OF ALL KNOWN BLAZARS
journal, June 2016

  • Mao, Peiyuan; Urry, C. Megan; Massaro, Francesco
  • The Astrophysical Journal Supplement Series, Vol. 224, Issue 2
  • DOI: 10.3847/0067-0049/224/2/26

Multicolor Optical Monitoring of the BL Lacertae Object S5 0716+714 during the 2012 Outburst
journal, July 2017

  • Hong, Shanwei; Xiong, Dingrong; Bai, Jinming
  • The Astronomical Journal, Vol. 154, Issue 2
  • DOI: 10.3847/1538-3881/aa799a

Spectroscopic Redshift of the Gamma-Ray Blazar B2 1215+30 from Ly α Emission
journal, January 2019


Search for Intra-day Optical Variability in Mrk 501
journal, November 2017


Bow Ties in the Sky. II. Searching for Gamma-Ray Halos in the Fermi Sky Using Anisotropy
journal, November 2017

  • Tiede, Paul; Broderick, Avery E.; Shalaby, Mohamad
  • The Astrophysical Journal, Vol. 850, Issue 2
  • DOI: 10.3847/1538-4357/aa9375

Scaling of Relativistic Shear Flows with the Bulk Lorentz Factor
journal, February 2018


Leptonic and Hadronic Modeling of Fermi -LAT Hard Spectrum Quasars and Predictions for High-energy Polarization
journal, August 2018

  • Paliya, Vaidehi S.; Zhang, Haocheng; Böttcher, Markus
  • The Astrophysical Journal, Vol. 863, Issue 1
  • DOI: 10.3847/1538-4357/aad1f0

The Polarization Behavior of Relativistic Synchrotron Jets
journal, September 2018


The Radio/Gamma Connection of Blazars from High to Low Radio Frequencies
journal, December 2018


Identifying the 3FHL Catalog. I. Archival Swift Observations and Source Classification
journal, January 2019


Evaluating the Optical Classification of Fermi BCUs Using Machine Learning
journal, February 2019


Signature of Stochastic Acceleration and Cooling Processes in an Outburst Phase of the TeV Blazar ON 231
journal, July 2019

  • Kalita, Nibedita; Sawangwit, Utane; Gupta, Alok C.
  • The Astrophysical Journal, Vol. 880, Issue 1
  • DOI: 10.3847/1538-4357/ab2765

X-Ray Spectral Variations of Synchrotron Peak in BL Lacs
journal, October 2019


A Two-zone Model for Blazar Emission: Implications for TXS 0506+056 and the Neutrino Event IceCube-170922A
journal, November 2019


Strong Soft X-Ray Excess in 2015 XMM-Newton Observations of BL Lac OJ 287
journal, February 2020

  • Pal, Main; Kushwaha, Pankaj; Dewangan, G. C.
  • The Astrophysical Journal, Vol. 890, Issue 1
  • DOI: 10.3847/1538-4357/ab65ee

NuSTAR Perspective on High-redshift MeV Blazars
journal, February 2020


On the Jet Properties of γ -Ray-loud Active Galactic Nuclei
journal, April 2018


Two New Catalogs of Blazar Candidates in the WISE Infrared Sky
journal, May 2019

  • D’Abrusco, Raffaele; Álvarez Crespo, Nuria; Massaro, Francesco
  • The Astrophysical Journal Supplement Series, Vol. 242, Issue 1
  • DOI: 10.3847/1538-4365/ab16f4

New Hard-TeV Extreme Blazars Detected with the MAGIC Telescopes
journal, February 2020

  • Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.
  • The Astrophysical Journal Supplement Series, Vol. 247, Issue 1
  • DOI: 10.3847/1538-4365/ab5b98

Fermi -LAT Stacking Analysis Technique: An Application to Extreme Blazars and Prospects for their CTA Detection
journal, August 2019

  • Paliya, Vaidehi S.; Domínguez, A.; Ajello, M.
  • The Astrophysical Journal, Vol. 882, Issue 1
  • DOI: 10.3847/2041-8213/ab398a

Multi-TeV Flaring from High-energy Blazars: An Evidence of the Photohadronic Process
journal, October 2019

  • Sahu, Sarira; López Fortín, Carlos E.; Nagataki, Shigehiro
  • The Astrophysical Journal, Vol. 884, Issue 1
  • DOI: 10.3847/2041-8213/ab43c7

Luminosity–redshift (L−z) relation and the blazar sequence for low power blazars
journal, November 2013

  • Odo, F. C.; Chukwude, A. E.; Ubachukwu, A. A.
  • Astrophysics and Space Science, Vol. 349, Issue 2
  • DOI: 10.1007/s10509-013-1694-9

Ratio of the Core to the Extended Emissions in the Comoving Frame for Blazars
journal, June 2017

  • Li, Yun-Tian; Fu, Shao-Yu; Feng, Huan-Jian
  • Journal of Astrophysics and Astronomy, Vol. 38, Issue 2
  • DOI: 10.1007/s12036-017-9442-0

Correlation between Fermi /LAT gamma-ray and 37 GHz radio properties of northern AGN averaged over 11 months
journal, November 2011


Near-infrared and gamma-ray monitoring of TANAMI gamma-ray bright sources
journal, June 2013


Searching for γ -ray signature in WHSP blazars
journal, February 2017


2WHSP: A multi-frequency selected catalogue of high energy and very high energy γ -ray blazars and blazar candidates
journal, January 2017


Long-term optical monitoring of TeV emitting blazars: I. Data analysis⋆
journal, December 2018


THE RADIO/GAMMA-RAY CONNECTION IN ACTIVE GALACTIC NUCLEI IN THE ERA OF THE FERMI LARGE AREA TELESCOPE
journal, October 2011


γ-Ray and Parsec-Scale jet Properties of a Complete Sample of Blazars from the Mojave Program
journal, November 2011


GAMMA-RAY LOUDNESS, SYNCHROTRON PEAK FREQUENCY, AND PARSEC-SCALE PROPERTIES OF BLAZARS DETECTED BY THE FERMI LARGE AREA TELESCOPE
journal, August 2012


Seed Photon Fields of Blazars in the Internal Shock Scenario
journal, April 2014


IMPLICATIONS OF PLASMA BEAM INSTABILITIES FOR THE STATISTICS OF THE FERMI HARD GAMMA-RAY BLAZARS AND THE ORIGIN OF THE EXTRAGALACTIC GAMMA-RAY BACKGROUND
journal, July 2014

  • Broderick, Avery E.; Pfrommer, Christoph; Puchwein, Ewald
  • The Astrophysical Journal, Vol. 790, Issue 2
  • DOI: 10.1088/0004-637x/790/2/137

SEARCHING FOR NEW γ-RAY BLAZAR CANDIDATES IN THE THIRD PALERMO BAT HARD X-RAY CATALOG WITH WISE
journal, May 2013

  • Maselli, A.; Massaro, F.; Cusumano, G.
  • The Astrophysical Journal Supplement Series, Vol. 206, Issue 2
  • DOI: 10.1088/0067-0049/206/2/17

LOCATION OF γ-RAY FLARE EMISSION IN THE JET OF THE BL LACERTAE OBJECT OJ287 MORE THAN 14 pc FROM THE CENTRAL ENGINE
journal, December 2010


Optical observations of BL Lac object ON 231 (W Comae) during 2010 March–April
journal, January 2013

  • Cheng, Xin-Lun; Zhang, You-Hong; Xu, Lei
  • Monthly Notices of the Royal Astronomical Society, Vol. 429, Issue 4
  • DOI: 10.1093/mnras/sts329

The observed radio/gamma-ray emission correlation for blazars with the Fermi-LAT and the RATAN-600 data
journal, May 2015

  • Mufakharov, T.; Mingaliev, M.; Sotnikova, Yu.
  • Monthly Notices of the Royal Astronomical Society, Vol. 450, Issue 3
  • DOI: 10.1093/mnras/stv772

Characterizing long-term optical, ultraviolet and X-ray variability in different activity states of OJ 287
journal, February 2017

  • Siejkowski, H.; Wierzcholska, A.
  • Monthly Notices of the Royal Astronomical Society, Vol. 468, Issue 1
  • DOI: 10.1093/mnras/stx495

Statistical analysis of variability properties of the Kepler blazar W2R 1926+42
journal, April 2018

  • Li, Yutong; Hu, Shaoming; Wiita, Paul J.
  • Monthly Notices of the Royal Astronomical Society, Vol. 478, Issue 1
  • DOI: 10.1093/mnras/sty1082

Extreme- and high-synchrotron-peaked blazars at the limit of Fermi-LAT detectability: the γ-ray spectrum of 1BIGB sources
journal, July 2018

  • Arsioli, B.; Barres de Almeida, U.; Prandini, E.
  • Monthly Notices of the Royal Astronomical Society, Vol. 480, Issue 2
  • DOI: 10.1093/mnras/sty1975

Long-term multiwavelength view of the blazar 1ES 1218+304
journal, September 2019

  • Singh, K. K.; Bisschoff, B.; van Soelen, B.
  • Monthly Notices of the Royal Astronomical Society, Vol. 489, Issue 4
  • DOI: 10.1093/mnras/stz2521

Multiband optical flux density and polarization microvariability study of optically bright blazars
journal, December 2019

  • Pasierb, Magdalena; Goyal, Arti; Ostrowski, Michał
  • Monthly Notices of the Royal Astronomical Society, Vol. 492, Issue 1
  • DOI: 10.1093/mnras/stz3533

Temporal correlation between the optical and γ-ray flux variations in the blazar 3C 454.3
journal, April 2019

  • Rajput, Bhoomika; Stalin, C. S.; Sahayanathan, S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 2
  • DOI: 10.1093/mnras/stz941

Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope
journal, February 2014


Measurement of the high-energy gamma-ray emission from the Moon with the Fermi Large Area Telescope
journal, April 2016


Discovery of very high energy γ -ray emission from the BL Lacertae object PKS 0301−243 with H.E.S.S.
text, January 2013

  • Abramowski, A.; Acero, F.; Aharonian, F.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/desy-2014-00655

Insights into the emission of the blazar 1ES 1011+496 through unprecedented broadband observations during 2011 and 2012
text, January 2016

  • Aleksić, J.; Ansoldi, S.; Antonelli, L. A.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2016-06242

Fermi-LAT Stacking Analysis Technique: An Application to Extreme Blazars and Prospects for their CTA Detection
text, January 2019

  • Paliya, Vaidehi Sharan; Domínguez, A.; Ajello, M.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2019-03436

A two-zone model for blazar emission: implications for TXS 0506+056 and the neutrino event IceCube-170922A
text, January 2019

  • Xue, Rui; Liu, Ruo-Yu; Petropoulou, Maria
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2020-00252

Baryon Loading Efficiency and Particle Acceleration Efficiency of Relativistic Jets: Cases for low Luminosity bl lacs
journal, August 2016


Variability and Period Analysis for BL Lac AO 0235+164
journal, March 2017


Extremely Rapid X-Ray Flares of TeV Blazars in the RXTE Era
journal, January 2018


Probing Blazar Emission Processes with Optical/Gamma-Ray Flare Correlations
journal, July 2019

  • Liodakis, Ioannis; Romani, Roger W.; Filippenko, Alexei V.
  • The Astrophysical Journal, Vol. 880, Issue 1
  • DOI: 10.3847/1538-4357/ab26b7

The Polarization Behavior of Relativistic Synchrotron Self-Compton Jets
journal, November 2019


Empirical multi-wavelength prediction method for very high energy gamma-ray emitting BL Lacertae objects
journal, December 2017


Comprehensive Monitoring of Gamma-Ray Bright Blazars. i. Statistical Study of Optical, X-Ray, and Gamma-Ray Spectral Slopes
journal, June 2014

  • Williamson, Karen E.; Jorstad, Svetlana G.; Marscher, Alan P.
  • The Astrophysical Journal, Vol. 789, Issue 2
  • DOI: 10.1088/0004-637x/789/2/135

Multiwavelength cross-correlations and flaring activity in bright blazars
journal, August 2018

  • Liodakis, I.; Romani, R. W.; Filippenko, A. V.
  • Monthly Notices of the Royal Astronomical Society, Vol. 480, Issue 4
  • DOI: 10.1093/mnras/sty2264

Multi-Color Optical Monitoring of mrk 501 from 2010 to 2015
journal, February 2016

  • Xiong, Dingrong; Zhang, Haojing; Zhang, Xiong
  • The Astrophysical Journal Supplement Series, Vol. 222, Issue 2
  • DOI: 10.3847/0067-0049/222/2/24

THE SPECTRAL ENERGY DISTRIBUTIONS OF FERMI BLAZARS
journal, October 2016


Comparison between Fermi detected and non-Fermi detected superluminal sources
journal, July 2019

  • Xiao, HuBing; Fan, JunHui; Yang, JiangHe
  • Science China Physics, Mechanics & Astronomy, Vol. 62, Issue 12
  • DOI: 10.1007/s11433-018-9371-x

The seven year Swift -XRT point source catalog (1SWXRT)
journal, March 2013


Properties of optically selected BL Lacertae candidates from the SDSS
journal, September 2014


The large gamma-ray flare of the flat-spectrum radio quasar PKS 0346−27
journal, July 2019


Leptonic and Hadronic Modeling of Fermi-Detected Blazars: Spectral Energy Distribution Modeling and High-Energy Polarization Predictions
journal, January 2013


Limits on the extragalactic background light in the Fermi era
conference, January 2012

  • Meyer, Manuel; Raue, Martin; Mazin, Daniel
  • HIGH ENERGY GAMMA-RAY ASTRONOMY: 5th International Meeting on High Energy Gamma-Ray Astronomy, AIP Conference Proceedings
  • DOI: 10.1063/1.4772332

GAMMA-RAY LIGHT CURVES AND VARIABILITY OF BRIGHT FERMI -DETECTED BLAZARS
journal, September 2010


Analysis of the absorption line profile at 21 cm for the hydrogen atom in the interstellar medium
journal, October 2018

  • Solovyev, D.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 51, Issue 22
  • DOI: 10.1088/1361-6455/aae55a

Broadband spectral fitting of blazars using XSPEC
journal, March 2018

  • Sahayanathan, Sunder; Sinha, Atreyee; Misra, Ranjeev
  • Research in Astronomy and Astrophysics, Vol. 18, Issue 3
  • DOI: 10.1088/1674-4527/18/3/35

Deep Broadband Observations of the Distant Gamma-Ray Blazar pks 1424+240
journal, March 2014


Intrinsic γ-ray luminosity, black hole mass, jet and accretion in Fermi blazars
journal, May 2014

  • Xiong, D. R.; Zhang, X.
  • Monthly Notices of the Royal Astronomical Society, Vol. 441, Issue 4
  • DOI: 10.1093/mnras/stu755

Discovery of very high energy gamma rays from 1ES 1440+122
journal, June 2016

  • Archambault, S.; Archer, A.; Barnacka, A.
  • Monthly Notices of the Royal Astronomical Society, Vol. 461, Issue 1
  • DOI: 10.1093/mnras/stw1319

Intra-day optical multi-band quasi-simultaneous observation of BL Lacertae object S5 0716+714 from 2013 to 2016
journal, June 2018

  • Zhang, Xiaoyuan; Wu, Jianghua; Meng, Nankun
  • Monthly Notices of the Royal Astronomical Society, Vol. 478, Issue 3
  • DOI: 10.1093/mnras/sty1468

Faint γ-ray sources at low redshift: the radio galaxy IC 1531
journal, September 2018

  • Bassi, T.; Migliori, G.; Grandi, P.
  • Monthly Notices of the Royal Astronomical Society, Vol. 481, Issue 4
  • DOI: 10.1093/mnras/sty2622

Probing the unidentified Fermi blazar-like population using optical polarization and machine learning
journal, April 2019

  • Liodakis, I.; Blinov, D.
  • Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 3
  • DOI: 10.1093/mnras/stz1008

A new hard X-ray-selected sample of extreme high-energy peaked BL Lac objects and their TeV gamma-ray properties
journal, March 2019

  • Foffano, L.; Prandini, E.; Franceschini, A.
  • Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 2
  • DOI: 10.1093/mnras/stz812

Beaming Effect in Fermi Blazars
journal, April 2013

  • Fan, Junhui; Yang, Jiang He; Zhang, Jing-Yi
  • Publications of the Astronomical Society of Japan, Vol. 65, Issue 2
  • DOI: 10.1093/pasj/65.2.25

Fermi Large Area Telescope Observations of Markarian 421: The Missing Piece of its Spectral Energy Distribution
text, January 2011


New blazars from the cross-match of recent multi-frequency catalogs
conference, August 2015

  • Maselli, Alessandro; Cusumano, Giancarlo; La Parola, Valentina
  • Proceedings of Swift: 10 Years of Discovery — PoS(SWIFT 10)
  • DOI: 10.22323/1.233.0148

Gamma-ray Emitting Narrow-Line Seyfert 1 Galaxies: Past, Present, and Future
text, January 2019


NuSTAR perspective on high-redshift MeV blazars
text, January 2020

  • Marcotulli, L.; Paliya, Vaidehi Sharan; Ajello, M.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2021-00238

Exploring the Connection between Parsec-scale Jet Activity and Broadband Outbursts in 3C 279
journal, May 2018


Systematic Physical Characterization of the γ -Ray Spectra of 2FHL Blazars
journal, March 2019

  • van den Berg, Jacobus P.; Böttcher, Markus; Domínguez, Alberto
  • The Astrophysical Journal, Vol. 874, Issue 1
  • DOI: 10.3847/1538-4357/aafdfd

Jet Power of Jetted Active Galactic Nuclei: Implications for Evolution and Unification
journal, July 2019


Search for Intra-day Optical Variability in γ -Ray-loud Blazars S5 0716+714 and 3C 273
journal, August 2019


Identifying TeV Source Candidates among Fermi -LAT Unclassified Blazars
journal, December 2019


Ultrahigh-energy Cosmic-Ray Interactions as the Origin of Very High-energy γ -Rays from BL Lacertae Objects
journal, February 2020

  • Das, Saikat; Gupta, Nayantara; Razzaque, Soebur
  • The Astrophysical Journal, Vol. 889, Issue 2
  • DOI: 10.3847/1538-4357/ab6131

3FHL: The Third Catalog of Hard Fermi -LAT Sources
journal, September 2017

  • Ajello, M.; Atwood, W. B.; Baldini, L.
  • The Astrophysical Journal Supplement Series, Vol. 232, Issue 2
  • DOI: 10.3847/1538-4365/aa8221

Multi-color Optical Monitoring of 10 Blazars from 2005 to 2011
journal, August 2018

  • Meng, Nankun; Zhang, Xiaoyuan; Wu, Jianghua
  • The Astrophysical Journal Supplement Series, Vol. 237, Issue 2
  • DOI: 10.3847/1538-4365/aacffe

Intrinsic Correlations for Flaring Blazars Detected by Fermi
journal, February 2017


The TANAMI Multiwavelength Program: Dynamic spectral energy distributions of southern blazars
journal, June 2016


FERMI LARGE AREA TELESCOPE OBSERVATIONS OF MARKARIAN 421: THE MISSING PIECE OF ITS SPECTRAL ENERGY DISTRIBUTION
journal, July 2011


Gamma-ray active galactic nucleus type through machine-learning algorithms
journal, October 2012

  • Hassan, T.; Mirabal, N.; Contreras, J. L.
  • Monthly Notices of the Royal Astronomical Society, Vol. 428, Issue 1
  • DOI: 10.1093/mnras/sts022

FSRQ/BL Lac dichotomy as the magnetized advective accretion process around black holes: a unified classification of blazars
journal, April 2019

  • Mondal, Tushar; Mukhopadhyay, Banibrata
  • Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 3
  • DOI: 10.1093/mnras/stz1062

TXS 0506+056, the first cosmic neutrino source, is not a BL Lac
journal, January 2019

  • Padovani, P.; Oikonomou, F.; Petropoulou, M.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 484, Issue 1
  • DOI: 10.1093/mnrasl/slz011

Discovery of high and very high-energy emission from the BL Lacertae object SHBL J001355.9–185406
text, January 2013

  • Abramowski, A.; Acero, F.; Aharonian, F.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/desy-2014-00641

Multiband variability studies and novel broadband SED modeling of Mrk 501 in 2009
text, January 2017

  • Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2017-09408

BAT AGN Spectroscopic Survey. XVI. General Physical Characteristics of BAT Blazars
text, January 2019