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Title: Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase

Abstract

Context. The BL Lac object S5 0716+714, a highly variable blazar, underwent an impressive outburst in January 2015 (Phase A), followed by minor activity in February (Phase B). The MAGIC observations were triggered by the optical flux observed in Phase A, corresponding to the brightest ever reported state of the source in the R-band. Aims.The comprehensive dataset collected is investigated in order to shed light on the mechanism of the broadband emission. Methods. Multi-wavelength light curves have been studied together with the broadband spectral energy distributions (SEDs). The sample includes data from Effelsberg, OVRO, Metsähovi, VLBI, CARMA, IRAM, SMA, Swift-UVOT, KVA, Tuorla, Steward, RINGO3, KANATA, AZT-8+ST7, Perkins, LX-200, Swift-XRT, NuSTAR, Fermi-LAT and MAGIC. Results. The flaring state of Phase A was detected in all the energy bands, providing for the first time a multi-wavelength sample of simultaneous data from the radio band to the very-high-energy (VHE, E > 100 GeV). In the constructed SED, the Swift-XRT+NuSTAR data constrain the transition between the synchrotron and inverse Compton components very accurately, while the second peak is constrained from 0.1 GeV to 600 GeV by Fermi+MAGIC data. The broadband SED cannot be described with a one-zone synchrotron self-Compton model as it severely underestimatesmore » the optical flux in order to reproduce the X-ray to γ-ray data. Instead we use a two-zone model. The electric vector position angle (EVPA) shows an unprecedented fast rotation. An estimation of the redshift of the source by combined high-energy (HE, 0.1 GeV < E < 100 GeV) and VHE data provides a value of z = 0.31 ± 0.02stats ± 0.05sys, confirming the literature value. Conclusions. The data show the VHE emission originating in the entrance and exit of a superluminal knot in and out of a recollimation shock in the inner jet. A shock–shock interaction in the jet seems responsible for the observed flares and EVPA swing. Finally, this scenario is also consistent with the SED modeling.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
MAGIC Collaboration; Fermi-LAT Collaboration; MWL Collaborators
OSTI Identifier:
1490365
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astronomy and Astrophysics
Additional Journal Information:
Journal Volume: 619; Journal ID: ISSN 0004-6361
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; BL Lacertae objects: individual: S5 0716+714; galaxies: active; galaxies: jets; gamma rays: galaxies

Citation Formats

Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Arcaro, C., Baack, D., Babić, A., Banerjee, B., Bangale, P., Barres de Almeida, U., Barrio, J. A., Becerra González, J., Bednarek, W., Bernardini, E., Ch Berse, R., Berti, A., Bhattacharyya, W., Biland, A., Blanch, O., Bonnoli, G., Carosi, R., Carosi, A., Ceribella, G., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Fallah Ramazani, V., Fernández-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., Gallozzi, S., García López, R. J., Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Gora, D., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Ishio, K., Konno, Y., Kubo, H., Kushida, J., Kuveždić, D., Lelas, D., Lindfors, E., Lombardi, S., Longo, F., López, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Mielke, K., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Nagayoshi, T., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Peresano, M., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Garcia, J. R., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Takahashi, M., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Treves, A., Tsujimoto, S., Vanzo, G., Vazquez Acosta, M., Vovk, I., Ward, J. E., Will, M., Zarić, D., Bastieri, D., Gasparrini, D., Lott, B., Rani, B., Thompson, D. J., Agudo, I., Angelakis, E., Borman, G. A., Casadio, C., Grishina, T. S., Gurwell, M., Hovatta, T., Itoh, R., Järvelä, E., Jermak, H., Jorstad, S., Kopatskaya, E. N., Kraus, A., Krichbaum, T. P., Kuin, N. P. M., Lähteenmäki, A., Larionov, V. M., Larionova, L. V., Lien, A. Y., Madejski, G., Marscher, A., Myserlis, I., Max-Moerbeck, W., Molina, S. N., Morozova, D. A., Nalewajko, K., Pearson, T. J., Ramakrishnan, V., Readhead, A. C. S., Reeves, R. A., Savchenko, S. S., Steele, I. A., Tornikoski, M., Troitskaya, Yu. V., Troitsky, I., Vasilyev, A. A., and Anton Zensus, J. Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase. United States: N. p., 2018. Web. doi:10.1051/0004-6361/201832677.
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Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Arcaro, C., Baack, D., Babić, A., Banerjee, B., Bangale, P., Barres de Almeida, U., Barrio, J. A., Becerra González, J., Bednarek, W., Bernardini, E., Ch Berse, R., Berti, A., Bhattacharyya, W., Biland, A., Blanch, O., Bonnoli, G., Carosi, R., Carosi, A., Ceribella, G., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Fallah Ramazani, V., Fernández-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., Gallozzi, S., García López, R. J., Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Gora, D., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Ishio, K., Konno, Y., Kubo, H., Kushida, J., Kuveždić, D., Lelas, D., Lindfors, E., Lombardi, S., Longo, F., López, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Mielke, K., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Nagayoshi, T., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Peresano, M., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Garcia, J. R., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Takahashi, M., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Treves, A., Tsujimoto, S., Vanzo, G., Vazquez Acosta, M., Vovk, I., Ward, J. E., Will, M., Zarić, D., Bastieri, D., Gasparrini, D., Lott, B., Rani, B., Thompson, D. J., Agudo, I., Angelakis, E., Borman, G. A., Casadio, C., Grishina, T. S., Gurwell, M., Hovatta, T., Itoh, R., Järvelä, E., Jermak, H., Jorstad, S., Kopatskaya, E. N., Kraus, A., Krichbaum, T. P., Kuin, N. P. M., Lähteenmäki, A., Larionov, V. M., Larionova, L. V., Lien, A. Y., Madejski, G., Marscher, A., Myserlis, I., Max-Moerbeck, W., Molina, S. N., Morozova, D. A., Nalewajko, K., Pearson, T. J., Ramakrishnan, V., Readhead, A. C. S., Reeves, R. A., Savchenko, S. S., Steele, I. A., Tornikoski, M., Troitskaya, Yu. V., Troitsky, I., Vasilyev, A. A., & Anton Zensus, J. Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase. United States. https://doi.org/10.1051/0004-6361/201832677
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Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Arcaro, C., Baack, D., Babić, A., Banerjee, B., Bangale, P., Barres de Almeida, U., Barrio, J. A., Becerra González, J., Bednarek, W., Bernardini, E., Ch Berse, R., Berti, A., Bhattacharyya, W., Biland, A., Blanch, O., Bonnoli, G., Carosi, R., Carosi, A., Ceribella, G., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Fallah Ramazani, V., Fernández-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., Gallozzi, S., García López, R. J., Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Gora, D., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Ishio, K., Konno, Y., Kubo, H., Kushida, J., Kuveždić, D., Lelas, D., Lindfors, E., Lombardi, S., Longo, F., López, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Mielke, K., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Nagayoshi, T., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Peresano, M., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Garcia, J. R., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Takahashi, M., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Treves, A., Tsujimoto, S., Vanzo, G., Vazquez Acosta, M., Vovk, I., Ward, J. E., Will, M., Zarić, D., Bastieri, D., Gasparrini, D., Lott, B., Rani, B., Thompson, D. J., Agudo, I., Angelakis, E., Borman, G. A., Casadio, C., Grishina, T. S., Gurwell, M., Hovatta, T., Itoh, R., Järvelä, E., Jermak, H., Jorstad, S., Kopatskaya, E. N., Kraus, A., Krichbaum, T. P., Kuin, N. P. M., Lähteenmäki, A., Larionov, V. M., Larionova, L. V., Lien, A. Y., Madejski, G., Marscher, A., Myserlis, I., Max-Moerbeck, W., Molina, S. N., Morozova, D. A., Nalewajko, K., Pearson, T. J., Ramakrishnan, V., Readhead, A. C. S., Reeves, R. A., Savchenko, S. S., Steele, I. A., Tornikoski, M., Troitskaya, Yu. V., Troitsky, I., Vasilyev, A. A., and Anton Zensus, J. Fri . "Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase". United States. https://doi.org/10.1051/0004-6361/201832677. https://www.osti.gov/servlets/purl/1490365.
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@article{osti_1490365,
title = {Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase},
author = {Ahnen, M. L. and Ansoldi, S. and Antonelli, L. A. and Arcaro, C. and Baack, D. and Babić, A. and Banerjee, B. and Bangale, P. and Barres de Almeida, U. and Barrio, J. A. and Becerra González, J. and Bednarek, W. and Bernardini, E. and Ch Berse, R. and Berti, A. and Bhattacharyya, W. and Biland, A. and Blanch, O. and Bonnoli, G. and Carosi, R. and Carosi, A. and Ceribella, G. and Chatterjee, A. and Colak, S. M. and Colin, P. and Colombo, E. and Contreras, J. L. and Cortina, J. and Covino, S. and Cumani, P. and Da Vela, P. and Dazzi, F. and De Angelis, A. and De Lotto, B. and Delfino, M. and Delgado, J. and Di Pierro, F. and Domínguez, A. and Dominis Prester, D. and Dorner, D. and Doro, M. and Einecke, S. and Elsaesser, D. and Fallah Ramazani, V. and Fernández-Barral, A. and Fidalgo, D. and Fonseca, M. V. and Font, L. and Fruck, C. and Galindo, D. and Gallozzi, S. and García López, R. J. and Garczarczyk, M. and Gaug, M. and Giammaria, P. and Godinović, N. and Gora, D. and Guberman, D. and Hadasch, D. and Hahn, A. and Hassan, T. and Hayashida, M. and Herrera, J. and Hose, J. and Hrupec, D. and Ishio, K. and Konno, Y. and Kubo, H. and Kushida, J. and Kuveždić, D. and Lelas, D. and Lindfors, E. and Lombardi, S. and Longo, F. and López, M. and Maggio, C. and Majumdar, P. and Makariev, M. and Maneva, G. and Manganaro, M. and Mannheim, K. and Maraschi, L. and Mariotti, M. and Martínez, M. and Masuda, S. and Mazin, D. and Mielke, K. and Minev, M. and Miranda, J. M. and Mirzoyan, R. and Moralejo, A. and Moreno, V. and Moretti, E. and Nagayoshi, T. and Neustroev, V. and Niedzwiecki, A. and Nievas Rosillo, M. and Nigro, C. and Nilsson, K. and Ninci, D. and Nishijima, K. and Noda, K. and Nogués, L. and Paiano, S. and Palacio, J. and Paneque, D. and Paoletti, R. and Paredes, J. M. and Pedaletti, G. and Peresano, M. and Persic, M. and Prada Moroni, P. G. and Prandini, E. and Puljak, I. and Garcia, J. R. and Reichardt, I. and Rhode, W. and Ribó, M. and Rico, J. and Righi, C. and Rugliancich, A. and Saito, T. and Satalecka, K. and Schweizer, T. and Sitarek, J. and Šnidarić, I. and Sobczynska, D. and Stamerra, A. and Strzys, M. and Surić, T. and Takahashi, M. and Takalo, L. and Tavecchio, F. and Temnikov, P. and Terzić, T. and Teshima, M. and Torres-Albà, N. and Treves, A. and Tsujimoto, S. and Vanzo, G. and Vazquez Acosta, M. and Vovk, I. and Ward, J. E. and Will, M. and Zarić, D. and Bastieri, D. and Gasparrini, D. and Lott, B. and Rani, B. and Thompson, D. J. and Agudo, I. and Angelakis, E. and Borman, G. A. and Casadio, C. and Grishina, T. S. and Gurwell, M. and Hovatta, T. and Itoh, R. and Järvelä, E. and Jermak, H. and Jorstad, S. and Kopatskaya, E. N. and Kraus, A. and Krichbaum, T. P. and Kuin, N. P. M. and Lähteenmäki, A. and Larionov, V. M. and Larionova, L. V. and Lien, A. Y. and Madejski, G. and Marscher, A. and Myserlis, I. and Max-Moerbeck, W. and Molina, S. N. and Morozova, D. A. and Nalewajko, K. and Pearson, T. J. and Ramakrishnan, V. and Readhead, A. C. S. and Reeves, R. A. and Savchenko, S. S. and Steele, I. A. and Tornikoski, M. and Troitskaya, Yu. V. and Troitsky, I. and Vasilyev, A. A. and Anton Zensus, J.},
abstractNote = {Context. The BL Lac object S5 0716+714, a highly variable blazar, underwent an impressive outburst in January 2015 (Phase A), followed by minor activity in February (Phase B). The MAGIC observations were triggered by the optical flux observed in Phase A, corresponding to the brightest ever reported state of the source in the R-band. Aims.The comprehensive dataset collected is investigated in order to shed light on the mechanism of the broadband emission. Methods. Multi-wavelength light curves have been studied together with the broadband spectral energy distributions (SEDs). The sample includes data from Effelsberg, OVRO, Metsähovi, VLBI, CARMA, IRAM, SMA, Swift-UVOT, KVA, Tuorla, Steward, RINGO3, KANATA, AZT-8+ST7, Perkins, LX-200, Swift-XRT, NuSTAR, Fermi-LAT and MAGIC. Results. The flaring state of Phase A was detected in all the energy bands, providing for the first time a multi-wavelength sample of simultaneous data from the radio band to the very-high-energy (VHE, E > 100 GeV). In the constructed SED, the Swift-XRT+NuSTAR data constrain the transition between the synchrotron and inverse Compton components very accurately, while the second peak is constrained from 0.1 GeV to 600 GeV by Fermi+MAGIC data. The broadband SED cannot be described with a one-zone synchrotron self-Compton model as it severely underestimates the optical flux in order to reproduce the X-ray to γ-ray data. Instead we use a two-zone model. The electric vector position angle (EVPA) shows an unprecedented fast rotation. An estimation of the redshift of the source by combined high-energy (HE, 0.1 GeV < E < 100 GeV) and VHE data provides a value of z = 0.31 ± 0.02stats ± 0.05sys, confirming the literature value. Conclusions. The data show the VHE emission originating in the entrance and exit of a superluminal knot in and out of a recollimation shock in the inner jet. A shock–shock interaction in the jet seems responsible for the observed flares and EVPA swing. Finally, this scenario is also consistent with the SED modeling.},
doi = {10.1051/0004-6361/201832677},
journal = {Astronomy and Astrophysics},
number = ,
volume = 619,
place = {United States},
year = {2018},
month = {11}
}
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On the origin of the γ -ray emission from the flaring blazar PKS 1222+216
journal, October 2011

Turbulent, Extreme Multi-Zone Model for Simulating flux and Polarization Variability in Blazars
journal, December 2013

Non-radial motion in the TeV blazar S5 0716+714: The pc-scale kinematics of a BL Lacertae object
journal, November 2009

An Updated Ultraviolet Calibration for the Swift∕UVOT
conference, January 2011

  • Breeveld, A. A.; Landsman, W.; Holland, S. T.
  • GAMMA RAY BURSTS 2010, AIP Conference Proceedings
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HONIR: an optical and near-infrared simultaneous imager, spectrograph, and polarimeter for the 1.5-m Kanata telescope
conference, August 2014

  • Akitaya, Hiroshi; Moritani, Yuki; Ui, Takahiro
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.2054577

The Third EGRET Catalog of High‐Energy Gamma‐Ray Sources
journal, July 1999

  • Hartman, R. C.; Bertsch, D. L.; Bloom, S. D.
  • The Astrophysical Journal Supplement Series, Vol. 123, Issue 1
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Extragalactic optical-infrared background radiation, its time evolution and the cosmic photon-photon opacity
journal, June 2008

The inner jet of an active galactic nucleus as revealed by a radio-to-γ-ray outburst
journal, April 2008

  • Marscher, Alan P.; Jorstad, Svetlana G.; D’Arcangelo, Francesca D.
  • Nature, Vol. 452, Issue 7190
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TeV gamma rays from 3C 279 - A possible probe of origin and intergalactic infrared radiation fields
journal, May 1992

  • Stecker, F. W.; de Jager, O. C.; Salamon, M. H.
  • The Astrophysical Journal, Vol. 390
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The BL Lacertae objects OQ 530 and S5 0716+714: Simultaneous observations in the X-rays, radio, optical and TeV bands
journal, March 2003

SPECTRAL PROPERTIES OF BRIGHT FERMI -DETECTED BLAZARS IN THE GAMMA-RAY BAND
journal, January 2010

Detection of significant cm to sub-mm band radio and  -ray correlated variability in Fermi bright blazars
journal, May 2014

  • Fuhrmann, L.; Larsson, S.; Chiang, J.
  • Monthly Notices of the Royal Astronomical Society, Vol. 441, Issue 3
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Correlated Long-Term Optical and X-Ray Variations in NGC 5548
journal, February 2003

  • Uttley, Philip; Edelson, Rick; McHardy, Ian M.
  • The Astrophysical Journal, Vol. 584, Issue 2
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THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
journal, May 2009

The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
journal, September 2005

Radio to gamma-ray variability study of blazar S5 0716+714
journal, March 2013

MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context
journal, July 2014

Quasi-Periodic Oscillations of ∼15 Minutes in the Optical Light Curve of the bl lac s5 0716+714
journal, July 2010

Studies of the jet in bl Lacertae. i. Recollimation Shock and Moving Emission Features
journal, May 2014

Multiepoch Very Long Baseline Array Observations of EGRET‐detected Quasars and BL Lacertae Objects: Connection between Superluminal Ejections and Gamma‐Ray Flares in Blazars
journal, August 2001

  • Jorstad, Svetlana G.; Marscher, Alan P.; Mattox, John R.
  • The Astrophysical Journal, Vol. 556, Issue 2
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Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.
journal, January 2013

Multiwavelength observations of Mrk 501 in 2008
journal, December 2014

Flaring Behavior of the Quasar 3c 454.3 Across the Electromagnetic Spectrum
journal, April 2010

  • Jorstad, Svetlana G.; Marscher, Alan P.; Larionov, Valeri M.
  • The Astrophysical Journal, Vol. 715, Issue 1
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Photometric calibration of the Swift ultraviolet/optical telescope: Photometric calibration of the Swift UVOT
journal, December 2007

Extragalactic background light inferred from AEGIS galaxy-SED-type fractions: EBL from AEGIS galaxy-SED-type fractions
journal, October 2010

Kinematics of Parsec-scale Jets of Gamma-Ray Blazars at 43 GHz within the VLBA-BU-BLAZAR Program
journal, September 2017

  • Jorstad, Svetlana G.; Marscher, Alan P.; Morozova, Daria A.
  • The Astrophysical Journal, Vol. 846, Issue 2
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Optical intraday variability studies of 10 low energy peaked blazars: Optical IDV studies of blazars
journal, March 2011

Optical and radio behaviour of the BL Lacertae object 0716+714
journal, April 2003

GAMMA-RAY OBSERVATIONAL PROPERTIES OF TeV-DETECTED BLAZARS
journal, January 2013

Analysis methods for results in gamma-ray astronomy
journal, September 1983

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An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi -LAT data
journal, July 2012

THE NUCLEAR SPECTROSCOPIC TELESCOPE ARRAY ( NuSTAR ) HIGH-ENERGY X-RAY MISSION
journal, May 2013

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The RINGO2 and DIPOL optical polarization catalogue of blazars
journal, July 2016

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  • Monthly Notices of the Royal Astronomical Society, Vol. 462, Issue 4
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Intra-day variability observations of S5 0716+714 over 4.5 years at 4.8 GHz
journal, June 2012

Results of WEBT, VLBA and RXTE monitoring of 3C 279 during 2006–2007
journal, October 2008

On characterizing the variability properties of X-ray light curves from active galaxies
journal, November 2003

Discovery of very high Energy γ-Rays from the Blazar s5 0716+714
journal, October 2009

Pair Production in Photon-Photon Collisions
journal, March 1967

Simultaneous X-ray and optical observations of S5 0716+714 after the outburst of March 2004
journal, August 2006

MULTIWAVELENGTH OBSERVATIONS OF A TeV-FLARE FROM W COMAE
journal, November 2009

Deep radio maps of high-frequency selected BL Lac objects
journal, July 1986

  • Antonucci, R. R. J.; Hickson, P.; Olszewski, E. W.
  • The Astronomical Journal, Vol. 92
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Fifteen years monitoring of extragalactic radio sources at 22, 37 and 87 GHz
journal, November 1998

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  • Astronomy and Astrophysics Supplement Series, Vol. 132, Issue 3
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Measuring Reddening with Sloan Digital sky Survey Stellar Spectra and Recalibrating sfd
journal, August 2011

Constraining blazar distances with combined Fermi and TeV data: an empirical approach: Blazar distance indications from gamma-rays
journal, April 2010

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

On the Redshift of TeV BL Lac Objects
journal, March 2017

Polarization and structure of relativistic parsec-scale AGN jets
journal, July 2005

Probing the Inner jet of the Quasar pks 1510–089 with Multi-Waveband Monitoring During Strong Gamma-Ray Activity
journal, February 2010

  • Marscher, Alan P.; Jorstad, Svetlana G.; Larionov, Valeri M.
  • The Astrophysical Journal, Vol. 710, Issue 2
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The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars
journal, November 2012

Synchrotron Polarization in Blazars
journal, June 2014

BLAZARS IN THE FERMI ERA: THE OVRO 40 m TELESCOPE MONITORING PROGRAM
journal, May 2011

  • Richards, Joseph L.; Max-Moerbeck, Walter; Pavlidou, Vasiliki
  • The Astrophysical Journal Supplement Series, Vol. 194, Issue 2
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Long-term optical monitoring of TeV emitting blazars: I. Data analysis⋆
journal, December 2018

Correlated radio and optical variability in the BL Lacertae object 0716 + 714
journal, May 1991

  • Quirrenbach, A.; Witzel, A.; Wagner, S.
  • The Astrophysical Journal, Vol. 372
  • DOI: 10.1086/186026

Superorbital variability of X-ray and radio emission of Cyg X-1 - II. Dependence of the orbital modulation and spectral hardness on the superorbital phase
journal, September 2008

  • Poutanen, Juri; Zdziarski, Andrzej A.; Ibragimov, Askar
  • Monthly Notices of the Royal Astronomical Society, Vol. 389, Issue 3
  • DOI: 10.1111/j.1365-2966.2008.13666.x

Correlated Multi–Wave Band Variability in the Blazar 3C 279 from 1996 to 2007
journal, December 2008

  • Chatterjee, Ritaban; Jorstad, Svetlana G.; Marscher, Alan P.
  • The Astrophysical Journal, Vol. 689, Issue 1
  • DOI: 10.1086/592598

Linking Resilience and Organizational Commitment: Does Happiness Matter?
journal, August 2017

Multi-frequency VLBA study of the blazar S5 0716+714 during the active state in 2004: I. Inner jet kinematics
journal, December 2008

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

The extragalactic optical-infrared background radiations, their time evolution and the cosmic photon-photon opacity
text, January 2008

Correlated Multi-Waveband Variability in the Blazar 3C~279 from 1996 to 2007
text, January 2008

Multiwavelength observations of a TeV-Flare from W Comae
text, January 2009

Probing the Inner Jet of the Quasar PKS 1510-089 with Multi-waveband Monitoring during Strong Gamma-ray Activity
text, January 2010

Blazars in the Fermi Era: The OVRO 40-m Telescope Monitoring Program
text, January 2010

An Updated Ultraviolet Calibration for the Swift/UVOT
text, January 2011

Intra-day variability observations of S5 0716+714 over 4.5 years at 4.8 GHz
text, January 2012

Gamma-Ray Observational Properties of TeV-Detected Blazars
text, January 2013

Radio to gamma-ray variability study of blazar S5 0716+714
text, January 2013

The Outburst of the Blazar S5 0716+71 in 2011 October: Shock in a Helical Jet
text, January 2013

Leptonic and Hadronic Modeling of Fermi-Detected Blazars
text, January 2013

Multi-wavelength study of flaring activity in BL Lac object S5 0716+714 during 2015 outburst
text, January 2015

The RINGO2 and DIPOL Optical Polarisation Catalogue of Blazars
text, January 2016

Polarimetry and Photometry of Gamma-Ray Bursts with RINGO2
text, January 2017

Optical and radio behaviour of the BL Lacertae object 0716+714
text, January 2003

Polarization and structure of relativistic parsec-scale AGN jets
text, January 2004

The Intra-Night Optical Variability of the bright BL Lac object S5 0716+714
text, January 2005

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    Monitoring of the radio galaxy M 87 during a low-emission state from 2012 to 2015 with MAGIC
    journal, January 2020

    • Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.
    • Monthly Notices of the Royal Astronomical Society, Vol. 492, Issue 4
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    • Oikonomou, Foteini; Murase, Kohta; Padovani, Paolo
    • Monthly Notices of the Royal Astronomical Society, Vol. 489, Issue 3
    • DOI: 10.1093/mnras/stz2246

    High energy neutrino flux from individual blazar flares
    text, January 2019

    Monitoring of the radio galaxy M87 during a low emission state from 2012 to 2015 with MAGIC
    text, January 2020

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