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Title: Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in 2009 March-July

Abstract

For this research, following the recent discovery of γ rays from the radio-loud narrow-line Seyfert 1 galaxy PMN J0948+0022 (z = 0.5846), we started a multiwavelength campaign from radio to γ rays, which was carried out between the end of 2009 March and the beginning of July. The source displayed activity at all the observed wavelengths: a general decreasing trend from optical to γ-ray frequencies was followed by an increase of radio emission after less than two months from the peak of the γ-ray emission. The largest flux change, about a factor of about 4, occurred in the X-ray band. The smallest was at ultraviolet and near-infrared frequencies, where the rate of the detected photons dropped by a factor 1.6-1.9. At optical wavelengths, where the sampling rate was the highest, it was possible to observe day scale variability, with flux variations up to a factor of about 3. The behavior of PMN J0948+0022 observed in this campaign and the calculated power carried out by its jet in the form of protons, electrons, radiation, and magnetic field are quite similar to that of blazars, specifically of flat-spectrum radio quasars. In conclusion, these results confirm the idea that radio-loud narrow-line Seyfert 1more » galaxies host relativistic jets with power similar to that of average blazars.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
The Fermi LAT Collaboration
OSTI Identifier:
1357418
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal
Additional Journal Information:
Journal Volume: 707; 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; galaxies: active; gamma rays: observations; infrared: galaxies; quasars: individual (PMN J0948+0022); radio continuum: galaxies; ultraviolet: galaxies; X-rays: galaxies

Citation Formats

Abdo, A. A., Ackermann, M., Ajello, M., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Çelik, Ö., Celotti, A., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Collmar, W., Conrad, J., Costamante, L., Cutini, S., de Angelis, A., de Palma, F., Do Couto e Silva, E., Drell, P. S., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Fortin, P., Foschini, L., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hanabata, Y., Hays, E., Hughes, R. E., Jackson, M. S., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, J., Kocian, M. L., Kuss, M., Lande, J., Latronico, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Max-Moerbeck, W., Mazziotta, M. N., McConville, W., McEnery, J. E., McGlynn, S., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Nestoras, I., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Parent, D., Pavlidou, V., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Readhead, A., Reimer, O., Reposeur, T., Richards, J. L., Rodriguez, A. Y., Roth, M., Ryde, F., Sadrozinski, H. F. -W., Sanchez, D., Sander, A., Saz Parkinson, P. M., Scargle, J. D., Sgrò, C., Shaw, M. S., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Tagliaferri, G., Tajima, H., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Tibolla, O., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Wehrle, A. E., Winer, B. L., Wood, K. S., Ylinen, T., Zensus, J. A., Ziegler, M., Angelakis, E., Bailyn, C., Bignall, H., Blanchard, J., Bonning, E. W., Buxton, M., Canterna, R., Carramiñana, A., Carrasco, L., Colomer, F., Doi, A., Ghisellini, G., Hauser, M., Hong, X., Isler, J., Kino, M., Kovalev, Y. Y., Kovalev, Yu. A., Krichbaum, T. P., Kutyrev, A., Lahteenmaki, A., van Langevelde, H. J., Lister, M. L., Macomb, D., Maraschi, L., Marchili, N., Nagai, H., Paragi, Z., Phillips, C., Pushkarev, A. B., Recillas, E., Roming, P., Sekido, M., Stark, M. A., Szomoru, A., Tammi, J., Tavecchio, F., Tornikoski, M., Tzioumis, A. K., Urry, C. M., and Wagner, S. Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in 2009 March-July. United States: N. p., 2009. Web. doi:10.1088/0004-637X/707/1/727.
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Abdo, A. A., Ackermann, M., Ajello, M., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Çelik, Ö., Celotti, A., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Collmar, W., Conrad, J., Costamante, L., Cutini, S., de Angelis, A., de Palma, F., Do Couto e Silva, E., Drell, P. S., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Fortin, P., Foschini, L., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hanabata, Y., Hays, E., Hughes, R. E., Jackson, M. S., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, J., Kocian, M. L., Kuss, M., Lande, J., Latronico, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Max-Moerbeck, W., Mazziotta, M. N., McConville, W., McEnery, J. E., McGlynn, S., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Nestoras, I., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Parent, D., Pavlidou, V., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Readhead, A., Reimer, O., Reposeur, T., Richards, J. L., Rodriguez, A. Y., Roth, M., Ryde, F., Sadrozinski, H. F. -W., Sanchez, D., Sander, A., Saz Parkinson, P. M., Scargle, J. D., Sgrò, C., Shaw, M. S., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Tagliaferri, G., Tajima, H., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Tibolla, O., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Wehrle, A. E., Winer, B. L., Wood, K. S., Ylinen, T., Zensus, J. A., Ziegler, M., Angelakis, E., Bailyn, C., Bignall, H., Blanchard, J., Bonning, E. W., Buxton, M., Canterna, R., Carramiñana, A., Carrasco, L., Colomer, F., Doi, A., Ghisellini, G., Hauser, M., Hong, X., Isler, J., Kino, M., Kovalev, Y. Y., Kovalev, Yu. A., Krichbaum, T. P., Kutyrev, A., Lahteenmaki, A., van Langevelde, H. J., Lister, M. L., Macomb, D., Maraschi, L., Marchili, N., Nagai, H., Paragi, Z., Phillips, C., Pushkarev, A. B., Recillas, E., Roming, P., Sekido, M., Stark, M. A., Szomoru, A., Tammi, J., Tavecchio, F., Tornikoski, M., Tzioumis, A. K., Urry, C. M., & Wagner, S. Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in 2009 March-July. United States. https://doi.org/10.1088/0004-637X/707/1/727
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Abdo, A. A., Ackermann, M., Ajello, M., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Çelik, Ö., Celotti, A., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Collmar, W., Conrad, J., Costamante, L., Cutini, S., de Angelis, A., de Palma, F., Do Couto e Silva, E., Drell, P. S., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Fortin, P., Foschini, L., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hanabata, Y., Hays, E., Hughes, R. E., Jackson, M. S., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, J., Kocian, M. L., Kuss, M., Lande, J., Latronico, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Max-Moerbeck, W., Mazziotta, M. N., McConville, W., McEnery, J. E., McGlynn, S., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Nestoras, I., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Parent, D., Pavlidou, V., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Readhead, A., Reimer, O., Reposeur, T., Richards, J. L., Rodriguez, A. Y., Roth, M., Ryde, F., Sadrozinski, H. F. -W., Sanchez, D., Sander, A., Saz Parkinson, P. M., Scargle, J. D., Sgrò, C., Shaw, M. S., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Tagliaferri, G., Tajima, H., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Tibolla, O., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Wehrle, A. E., Winer, B. L., Wood, K. S., Ylinen, T., Zensus, J. A., Ziegler, M., Angelakis, E., Bailyn, C., Bignall, H., Blanchard, J., Bonning, E. W., Buxton, M., Canterna, R., Carramiñana, A., Carrasco, L., Colomer, F., Doi, A., Ghisellini, G., Hauser, M., Hong, X., Isler, J., Kino, M., Kovalev, Y. Y., Kovalev, Yu. A., Krichbaum, T. P., Kutyrev, A., Lahteenmaki, A., van Langevelde, H. J., Lister, M. L., Macomb, D., Maraschi, L., Marchili, N., Nagai, H., Paragi, Z., Phillips, C., Pushkarev, A. B., Recillas, E., Roming, P., Sekido, M., Stark, M. A., Szomoru, A., Tammi, J., Tavecchio, F., Tornikoski, M., Tzioumis, A. K., Urry, C. M., and Wagner, S. Wed . "Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in 2009 March-July". United States. https://doi.org/10.1088/0004-637X/707/1/727. https://www.osti.gov/servlets/purl/1357418.
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@article{osti_1357418,
title = {Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in 2009 March-July},
author = {Abdo, A. A. and Ackermann, M. and Ajello, M. and Axelsson, M. and Baldini, L. and Ballet, J. and Barbiellini, G. and Bastieri, D. and Baughman, B. M. and Bechtol, K. and Bellazzini, R. and Berenji, B. and Bloom, E. D. and Bonamente, E. and Borgland, A. W. and Bregeon, J. and Brez, A. and Brigida, M. and Bruel, P. and Burnett, T. H. and Caliandro, G. A. and Cameron, R. A. and Caraveo, P. A. and Casandjian, J. M. and Cavazzuti, E. and Cecchi, C. and Çelik, Ö. and Celotti, A. and Chekhtman, A. and Chiang, J. and Ciprini, S. and Claus, R. and Cohen-Tanugi, J. and Collmar, W. and Conrad, J. and Costamante, L. and Cutini, S. and de Angelis, A. and de Palma, F. and Do Couto e Silva, E. and Drell, P. S. and Dumora, D. and Farnier, C. and Favuzzi, C. and Fegan, S. J. and Focke, W. B. and Fortin, P. and Foschini, L. and Frailis, M. and Fuhrmann, L. and Fukazawa, Y. and Funk, S. and Fusco, P. and Gargano, F. and Gehrels, N. and Germani, S. and Giglietto, N. and Giordano, F. and Giroletti, M. and Glanzman, T. and Godfrey, G. and Grenier, I. A. and Grove, J. E. and Guillemot, L. and Guiriec, S. and Hanabata, Y. and Hays, E. and Hughes, R. E. and Jackson, M. S. and Jóhannesson, G. and Johnson, A. S. and Johnson, W. N. and Kadler, M. and Kamae, T. and Katagiri, H. and Kataoka, J. and Kawai, N. and Kerr, M. and Knödlseder, J. and Kocian, M. L. and Kuss, M. and Lande, J. and Latronico, L. and Longo, F. and Loparco, F. and Lott, B. and Lovellette, M. N. and Lubrano, P. and Madejski, G. M. and Makeev, A. and Max-Moerbeck, W. and Mazziotta, M. N. and McConville, W. and McEnery, J. E. and McGlynn, S. 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 Nestoras, I. and Nolan, P. L. and Norris, J. P. and Nuss, E. and Ohsugi, T. and Omodei, N. and Orlando, E. and Ormes, J. F. and Paneque, D. and Parent, D. and Pavlidou, V. and Pelassa, V. and Pepe, M. and Pesce-Rollins, M. and Piron, F. and Porter, T. A. and Rainò, S. and Rando, R. and Razzano, M. and Readhead, A. and Reimer, O. and Reposeur, T. and Richards, J. L. and Rodriguez, A. Y. and Roth, M. and Ryde, F. and Sadrozinski, H. F. -W. and Sanchez, D. and Sander, A. and Saz Parkinson, P. M. and Scargle, J. D. and Sgrò, C. and Shaw, M. S. and Smith, P. D. and Spandre, G. and Spinelli, P. and Strickman, M. S. and Suson, D. J. and Tagliaferri, G. and Tajima, H. and Takahashi, H. and Tanaka, T. and Thayer, J. B. and Thayer, J. G. and Thompson, D. J. and Tibaldo, L. and Tibolla, O. and Torres, D. F. and Tosti, G. and Tramacere, A. and Uchiyama, Y. and Usher, T. L. and Vasileiou, V. and Vilchez, N. and Vitale, V. and Waite, A. P. and Wang, P. and Wehrle, A. E. and Winer, B. L. and Wood, K. S. and Ylinen, T. and Zensus, J. A. and Ziegler, M. and Angelakis, E. and Bailyn, C. and Bignall, H. and Blanchard, J. and Bonning, E. W. and Buxton, M. and Canterna, R. and Carramiñana, A. and Carrasco, L. and Colomer, F. and Doi, A. and Ghisellini, G. and Hauser, M. and Hong, X. and Isler, J. and Kino, M. and Kovalev, Y. Y. and Kovalev, Yu. A. and Krichbaum, T. P. and Kutyrev, A. and Lahteenmaki, A. and van Langevelde, H. J. and Lister, M. L. and Macomb, D. and Maraschi, L. and Marchili, N. and Nagai, H. and Paragi, Z. and Phillips, C. and Pushkarev, A. B. and Recillas, E. and Roming, P. and Sekido, M. and Stark, M. A. and Szomoru, A. and Tammi, J. and Tavecchio, F. and Tornikoski, M. and Tzioumis, A. K. and Urry, C. M. and Wagner, S.},
abstractNote = {For this research, following the recent discovery of γ rays from the radio-loud narrow-line Seyfert 1 galaxy PMN J0948+0022 (z = 0.5846), we started a multiwavelength campaign from radio to γ rays, which was carried out between the end of 2009 March and the beginning of July. The source displayed activity at all the observed wavelengths: a general decreasing trend from optical to γ-ray frequencies was followed by an increase of radio emission after less than two months from the peak of the γ-ray emission. The largest flux change, about a factor of about 4, occurred in the X-ray band. The smallest was at ultraviolet and near-infrared frequencies, where the rate of the detected photons dropped by a factor 1.6-1.9. At optical wavelengths, where the sampling rate was the highest, it was possible to observe day scale variability, with flux variations up to a factor of about 3. The behavior of PMN J0948+0022 observed in this campaign and the calculated power carried out by its jet in the form of protons, electrons, radiation, and magnetic field are quite similar to that of blazars, specifically of flat-spectrum radio quasars. In conclusion, these results confirm the idea that radio-loud narrow-line Seyfert 1 galaxies host relativistic jets with power similar to that of average blazars.},
doi = {10.1088/0004-637X/707/1/727},
journal = {The Astrophysical Journal},
number = 1,
volume = 707,
place = {United States},
year = {Wed Nov 25 00:00:00 EST 2009},
month = {Wed Nov 25 00:00:00 EST 2009}
}
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Works referenced in this record:

FERMI /LARGE AREA TELESCOPE DISCOVERY OF GAMMA-RAY EMISSION FROM A RELATIVISTIC JET IN THE NARROW-LINE QUASAR PMN J0948+0022
journal, June 2009

BRIGHT ACTIVE GALACTIC NUCLEI SOURCE LIST FROM THE FIRST THREE MONTHS OF THE FERMI LARGE AREA TELESCOPE ALL-SKY SURVEY
journal, July 2009

THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
journal, May 2009

The Burst Alert Telescope (BAT) on the SWIFT Midex Mission
journal, October 2005

  • Barthelmy, Scott D.; Barbier, Louis M.; Cummings, Jay R.
  • Space Science Reviews, Vol. 120, Issue 3-4
  • DOI: 10.1007/s11214-005-5096-3

SExtractor: Software for source extraction
journal, June 1996

  • Bertin, E.; Arnouts, S.
  • Astronomy and Astrophysics Supplement Series, Vol. 117, Issue 2
  • DOI: 10.1051/aas:1996164

UBVRI photometry. II - The Cousins VRI system, its temperature and absolute flux calibration, and relevance for two-dimensional photometry
journal, October 1979

  • Bessell, M. S.
  • Publications of the Astronomical Society of the Pacific, Vol. 91
  • DOI: 10.1086/130542

The Swift X-Ray Telescope
journal, October 2005

The relationship between infrared, optical, and ultraviolet extinction
journal, October 1989

  • Cardelli, Jason A.; Clayton, Geoffrey C.; Mathis, John S.
  • The Astrophysical Journal, Vol. 345
  • DOI: 10.1086/167900

Parameter estimation in astronomy through application of the likelihood ratio
journal, March 1979

The power of blazar jets: The power of blazar jets
journal, February 2008

Are the black hole masses in narrow-line Seyfert 1 galaxies actually small?
journal, May 2008

  • Decarli, Roberto; Dotti, Massimo; Fontana, Marcella
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 386, Issue 1
  • DOI: 10.1111/j.1745-3933.2008.00451.x

Blazar nuclei in radio-loud narrow-line Seyfert 1?
journal, March 2009

Simultaneous Radio to (Sub-) mm-Monitoring of Variability and Spectral Shape Evolution of potential GLAST Blazars
conference, January 2007

  • Fuhrmann, L.; Zensus, J. A.; Krichbaum, T. P.
  • THE FIRST GLAST SYMPOSIUM, AIP Conference Proceedings
  • DOI: 10.1063/1.2757314

The Swift Gamma‐Ray Burst Mission
journal, August 2004

  • Gehrels, N.; Chincarini, G.; Giommi, P.
  • The Astrophysical Journal, Vol. 611, Issue 2
  • DOI: 10.1086/422091

Canonical high-power blazars
journal, August 2009

Naked active galactic nuclei
journal, August 2004

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

FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION
journal, February 2009

  • Komatsu, E.; Dunkley, J.; Nolta, M. R.
  • The Astrophysical Journal Supplement Series, Vol. 180, Issue 2
  • DOI: 10.1088/0067-0049/180/2/330

Radio-loud Narrow-Line Type 1 Quasars
journal, June 2006

  • Komossa, Stefanie; Voges, Wolfgang; Xu, Dawei
  • The Astronomical Journal, Vol. 132, Issue 2
  • DOI: 10.1086/505043

Survey of instantaneous 1-22 GHz spectra of 550 compact extragalactic objects with declinations from $-30^\circ$ to $+43^\circ$
journal, November 1999

  • Kovalev, Y. Y.; Nizhelsky, N. A.; Kovalev, Yu. A.
  • Astronomy and Astrophysics Supplement Series, Vol. 139, Issue 3
  • DOI: 10.1051/aas:1999406

Sub-Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. IV. Fine-Scale Structure
journal, December 2005

  • Kovalev, Y. Y.; Kellermann, K. I.; Lister, M. L.
  • The Astronomical Journal, Vol. 130, Issue 6
  • DOI: 10.1086/497430

The Relation Between agn Gamma-Ray Emission and Parsec-Scale Radio jets
journal, April 2009

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  • DOI: 10.1086/168039

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  • DOI: 10.1086/309153

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  • DOI: 10.1051/aas:1998297

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    Radio-to- γ -ray monitoring of the narrow-line Seyfert 1 galaxy PMN J0948 + 0022 from 2008 to 2011
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    Radio-Loud Narrow-Line Seyfert 1 as a new Class of Gamma-Ray Active Galactic Nuclei
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    The host Galaxy of the Gamma-Ray Narrow-Line Seyfert 1 Galaxy 1h 0323+342
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    Intranight optical variability of  -ray-loud narrow-line Seyfert 1 galaxies
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    • Paliya, V. S.; Stalin, C. S.; Kumar, B.
    • Monthly Notices of the Royal Astronomical Society, Vol. 428, Issue 3
    • DOI: 10.1093/mnras/sts217

    The most powerful flaring activity from the NLSy1 PMN J0948+0022
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    • D'Ammando, F.; Orienti, M.; Finke, J.
    • Monthly Notices of the Royal Astronomical Society, Vol. 446, Issue 3
    • DOI: 10.1093/mnras/stu2251

    Prospects for gamma-ray observations of narrow-line Seyfert 1 galaxies with the Cherenkov Telescope Array
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    • Romano, P.; Vercellone, S.; Foschini, L.
    • Monthly Notices of the Royal Astronomical Society, Vol. 481, Issue 4
    • DOI: 10.1093/mnras/sty2484

    B2 0954+25A: a typical Fermi blazar or a γ-ray loud Narrow Line Seyfert 1≟: B2 0954+25A: a typical blazar or a γ-ray NLS1?
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    SBS 0846+513: a new γ-ray-emitting narrow-line Seyfert 1 galaxy: SBS 0846+513: a new γ-ray-emitting NLS1
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    Unveiling the nature of two unidentified EGRET blazar candidates through spectroscopic observations: Nature of two unidentified EGRET blazars
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    What We Talk about When We Talk about Blazars?
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    What We Talk About When We Talk About Blazars?
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    What we talk about when we talk about blazars?
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    Radio jets and gamma-ray emission in radio-silent narrow-line Seyfert 1 galaxies
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