skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray Active Galactic Nuclei

Abstract

In this work, we report the discovery with Fermi/LAT of γ-ray emission from three radio-loud narrow-line Seyfert 1 galaxies: PKS 1502+036 (z = 0.409), 1H 0323+342 (z = 0.061), and PKS 2004 – 447 (z = 0.24). In addition to PMN J0948+0022 (z = 0.585), the first source of this type to be detected in γ rays, they may form an emerging new class of γ-ray active galactic nuclei (AGNs). Lastly, these findings can have strong implications on our knowledge about relativistic jets and the unified model of the AGN.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
The Fermi/LAT Collaboration
OSTI Identifier:
1357423
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 707; Journal Issue: 2; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; quasars: general; galaxies: active; galaxies: Seyfert; gamma rays: observations

Citation Formats

Abdo, A. A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., 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., Cecchi, C., Çelik, Ö., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Cutini, S., Dermer, C. D., de Palma, F., do Couto e Silva, E., Drell, P. S., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Foschini, L., Frailis, M., Fukazawa, Y., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hayashida, M., Hays, E., Horan, D., Hughes, R. E., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Knödlseder, J., Kuss, M., Lande, J., Latronico, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Makeev, A., Mazziotta, M. N., McConville, W., McEnery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Pelassa, V., Pepe, M., Persic, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Rochester, L. S., Rodriguez, A. Y., Ryde, F., Sadrozinski, H. F. -W., Sambruna, R., Sander, A., Saz Parkinson, P. M., Scargle, J. D., Sgrò, C., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Tagliaferri, G., Takahashi, H., Takahashi, T., 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., Winer, B. L., Wood, K. S., Ylinen, T., Ziegler, M., Ghisellini, G., Maraschi, L., and Tavecchio, and F. Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray Active Galactic Nuclei. United States: N. p., 2009. Web. doi:10.1088/0004-637X/707/2/L142.
Abdo, A. A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., 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., Cecchi, C., Çelik, Ö., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Cutini, S., Dermer, C. D., de Palma, F., do Couto e Silva, E., Drell, P. S., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Foschini, L., Frailis, M., Fukazawa, Y., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hayashida, M., Hays, E., Horan, D., Hughes, R. E., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Knödlseder, J., Kuss, M., Lande, J., Latronico, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Makeev, A., Mazziotta, M. N., McConville, W., McEnery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Pelassa, V., Pepe, M., Persic, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Rochester, L. S., Rodriguez, A. Y., Ryde, F., Sadrozinski, H. F. -W., Sambruna, R., Sander, A., Saz Parkinson, P. M., Scargle, J. D., Sgrò, C., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Tagliaferri, G., Takahashi, H., Takahashi, T., 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., Winer, B. L., Wood, K. S., Ylinen, T., Ziegler, M., Ghisellini, G., Maraschi, L., & Tavecchio, and F. Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray Active Galactic Nuclei. United States. doi:10.1088/0004-637X/707/2/L142.
Abdo, A. A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., 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., Cecchi, C., Çelik, Ö., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Cutini, S., Dermer, C. D., de Palma, F., do Couto e Silva, E., Drell, P. S., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Foschini, L., Frailis, M., Fukazawa, Y., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hayashida, M., Hays, E., Horan, D., Hughes, R. E., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Knödlseder, J., Kuss, M., Lande, J., Latronico, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Makeev, A., Mazziotta, M. N., McConville, W., McEnery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Pelassa, V., Pepe, M., Persic, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Rochester, L. S., Rodriguez, A. Y., Ryde, F., Sadrozinski, H. F. -W., Sambruna, R., Sander, A., Saz Parkinson, P. M., Scargle, J. D., Sgrò, C., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Tagliaferri, G., Takahashi, H., Takahashi, T., 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., Winer, B. L., Wood, K. S., Ylinen, T., Ziegler, M., Ghisellini, G., Maraschi, L., and Tavecchio, and F. Fri . "Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray Active Galactic Nuclei". United States. doi:10.1088/0004-637X/707/2/L142. https://www.osti.gov/servlets/purl/1357423.
@article{osti_1357423,
title = {Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray Active Galactic Nuclei},
author = {Abdo, A. A. and Ackermann, M. and Ajello, M. and Baldini, L. and Ballet, J. and Barbiellini, G. and Bastieri, D. 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 Cecchi, C. and Çelik, Ö. and Chekhtman, A. and Cheung, C. C. and Chiang, J. and Ciprini, S. and Claus, R. and Cohen-Tanugi, J. and Conrad, J. and Cutini, S. and Dermer, C. D. and de Palma, F. and do Couto e Silva, E. and Drell, P. S. and Dubois, R. and Dumora, D. and Farnier, C. and Favuzzi, C. and Fegan, S. J. and Focke, W. B. and Foschini, L. and Frailis, M. and Fukazawa, Y. and Fusco, P. and Gargano, F. and Gehrels, N. and Germani, S. and Giebels, B. 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 Hayashida, M. and Hays, E. and Horan, D. and Hughes, R. E. and Jóhannesson, G. and Johnson, A. S. and Johnson, W. N. and Kadler, M. and Kamae, T. and Katagiri, H. and Kataoka, J. and Kerr, M. and Knödlseder, J. 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 Makeev, A. 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 Monte, C. and Monzani, M. E. and Morselli, A. and Moskalenko, I. V. and Murgia, S. 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 Pelassa, V. and Pepe, M. and Persic, M. and Pesce-Rollins, M. and Piron, F. and Porter, T. A. and Rainò, S. and Rando, R. and Razzano, M. and Rochester, L. S. and Rodriguez, A. Y. and Ryde, F. and Sadrozinski, H. F. -W. and Sambruna, R. and Sander, A. and Saz Parkinson, P. M. and Scargle, J. D. and Sgrò, C. and Smith, P. D. and Spandre, G. and Spinelli, P. and Strickman, M. S. and Suson, D. J. and Tagliaferri, G. and Takahashi, H. and Takahashi, T. 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 Winer, B. L. and Wood, K. S. and Ylinen, T. and Ziegler, M. and Ghisellini, G. and Maraschi, L. and Tavecchio, and F.},
abstractNote = {In this work, we report the discovery with Fermi/LAT of γ-ray emission from three radio-loud narrow-line Seyfert 1 galaxies: PKS 1502+036 (z = 0.409), 1H 0323+342 (z = 0.061), and PKS 2004 – 447 (z = 0.24). In addition to PMN J0948+0022 (z = 0.585), the first source of this type to be detected in γ rays, they may form an emerging new class of γ-ray active galactic nuclei (AGNs). Lastly, these findings can have strong implications on our knowledge about relativistic jets and the unified model of the AGN.},
doi = {10.1088/0004-637X/707/2/L142},
journal = {Astrophysical Journal},
number = 2,
volume = 707,
place = {United States},
year = {2009},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 130 works
Citation information provided by
Web of Science

Save / Share:

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


Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 pmn J0948+0022 in 2009 March-July
journal, November 2009


The colour of the narrow line Sy1-blazar 0324+3410
journal, August 2008


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


The Third IBIS/ISGRI Soft Gamma‐Ray Survey Catalog
journal, May 2007

  • Bird, A. J.; Malizia, A.; Bazzano, A.
  • The Astrophysical Journal Supplement Series, Vol. 170, Issue 1
  • DOI: 10.1086/513148

Relativistic jets as compact radio sources
journal, August 1979

  • Blandford, R. D.; Konigl, A.
  • The Astrophysical Journal, Vol. 232
  • DOI: 10.1086/157262

Comptonization of Infrared Radiation from Hot Dust by Relativistic Jets in Quasars
journal, December 2000

  • Błażejowski, M.; Sikora, M.; Moderski, R.
  • The Astrophysical Journal, Vol. 545, Issue 1
  • DOI: 10.1086/317791

The extreme flare in III Zw 2:: Evolution of a radio jet in a Seyfert galaxy
journal, April 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


Model for the High-Energy Emission from Blazars
journal, October 1993

  • Dermer, Charles D.; Schlickeiser, Reinhard
  • The Astrophysical Journal, Vol. 416
  • DOI: 10.1086/173251

A Search for TeV Gamma‐Ray Emission from High‐peaked Flat‐Spectrum Radio Quasars Using the Whipple Air Cerenkov Telescope
journal, October 2004

  • Falcone, A. D.; Bond, I. H.; Boyle, P. J.
  • The Astrophysical Journal, Vol. 613, Issue 2
  • DOI: 10.1086/423128

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


XMM–Newton observations of a sample of γ -ray loud active galactic nuclei
journal, June 2006


A radio-emitting outflow in the quiescent state of A0620−00: implications for modelling low-luminosity black hole binaries: Radio outflow of A0620−00
journal, June 2006


Aborted jets and the X–ray emission of radio–quiet AGNs
journal, December 2003


Canonical high-power blazars
journal, August 2009


Jet and accretion power in the most powerful Fermi blazars
journal, November 2009


CRATES: An All‐Sky Survey of Flat‐Spectrum Radio Sources
journal, July 2007

  • Healey, Stephen E.; Romani, Roger W.; Taylor, Gregory B.
  • The Astrophysical Journal Supplement Series, Vol. 171, Issue 1
  • DOI: 10.1086/513742

Nuclear Activity in Nearby Galaxies
journal, September 2008


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

A Comprehensive Spectral and Variability Study of Narrow‐Line Seyfert 1 Galaxies Observed by ASCA . II. Spectral Analysis and Correlations
journal, December 1999

  • Leighly, Karen M.
  • The Astrophysical Journal Supplement Series, Vol. 125, Issue 2
  • DOI: 10.1086/313287

Mojave: Monitoring of jets in Active Galactic Nuclei with vlba Experiments. v. Multi-Epoch vlba Images
journal, February 2009


Testing the blazar spectral sequence: X-ray-selected blazars
journal, December 2008


The Likelihood Analysis of EGRET Data
journal, April 1996

  • Mattox, J. R.; Bertsch, D. L.; Chiang, J.
  • The Astrophysical Journal, Vol. 461
  • DOI: 10.1086/177068

A Very Radio Loud Narrow‐Line Seyfert 1: PKS 2004−447
journal, September 2001

  • Oshlack, A. Y. K. N.; Webster, R. L.; Whiting, M. T.
  • The Astrophysical Journal, Vol. 558, Issue 2
  • DOI: 10.1086/322299

Narrow-line Seyfert 1s: 15 years later
journal, September 2000


Comptonization of diffuse ambient radiation by a relativistic jet: The source of gamma rays from blazars?
journal, January 1994

  • Sikora, Marek; Begelman, Mitchell C.; Rees, Martin J.
  • The Astrophysical Journal, Vol. 421
  • DOI: 10.1086/173633

On the Nature of MeV Blazars
journal, September 2002

  • Sikora, M.; Błażejowski, M.; Moderski, R.
  • The Astrophysical Journal, Vol. 577, Issue 1
  • DOI: 10.1086/342164

Optical Properties of Radio-selected Narrow-Line Seyfert 1 Galaxies
journal, April 2006

  • Whalen, D. J.; Laurent-Muehleisen, S. A.; Moran, E. C.
  • The Astronomical Journal, Vol. 131, Issue 4
  • DOI: 10.1086/500825

A Population of Radio‐Loud Narrow‐Line Seyfert 1 Galaxies with Blazar‐Like Properties?
journal, October 2008

  • Yuan, W.; Zhou, H. Y.; Komossa, S.
  • The Astrophysical Journal, Vol. 685, Issue 2
  • DOI: 10.1086/591046

Properties of Broad Band Continuum of Narrow Line Seyfert 1 Galaxies
journal, December 2002

  • Zhou, Hong-Yan; Wang, Ting-Gui
  • Chinese Journal of Astronomy and Astrophysics, Vol. 2, Issue 6
  • DOI: 10.1088/1009-9271/2/6/501

A Comprehensive Study of 2000 Narrow Line Seyfert 1 Galaxies from the Sloan Digital Sky Survey. I. The Sample
journal, September 2006

  • Zhou, Hongyan; Wang, Tinggui; Yuan, Weimin
  • The Astrophysical Journal Supplement Series, Vol. 166, Issue 1
  • DOI: 10.1086/504869

A Narrow-Line Seyfert 1-Blazar Composite Nucleus in 2MASX J0324+3410
journal, February 2007

  • Zhou, Hongyan; Wang, Tinggui; Yuan, Weimin
  • The Astrophysical Journal, Vol. 658, Issue 1
  • DOI: 10.1086/513604

    Works referencing / citing this record:

    Intranight optical variability of  -ray-loud narrow-line Seyfert 1 galaxies
    journal, November 2012

    • Paliya, V. S.; Stalin, C. S.; Kumar, B.
    • Monthly Notices of the Royal Astronomical Society, Vol. 428, Issue 3
    • DOI: 10.1093/mnras/sts217

    Radio jet emission from GeV-emitting narrow-line Seyfert 1 galaxies
    journal, February 2015


    Probing narrow-line Seyfert 1 galaxies in the southern hemisphere
    journal, July 2018


    Coexistence of a non-thermal jet and a complex ultra-fast X-ray outflow in a moderately luminous AGN
    journal, April 2017


    What powers the radio-loud narrow-line Seyfert 1 galaxy RX J2314.9+2243?: A view onto its central engine from radio to X-rays⋆
    journal, February 2015


    The gamma-ray emitting radio-loud narrow-line Seyfert 1 galaxy PKS 2004−447: II. The radio view⋆
    journal, April 2016


    INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey: II. Catalog of sources⋆⋆⋆
    journal, November 2010


    Radio-to- γ -ray monitoring of the narrow-line Seyfert 1 galaxy PMN J0948 + 0022 from 2008 to 2011
    journal, November 2012


    Optical polarisation variability of radio-loud narrow-line Seyfert 1 galaxies: Search for long rotations of the polarisation plane
    journal, October 2018


    37 GHz observations of narrow-line Seyfert 1 galaxies
    journal, July 2017


    The ordinary life of the γ-ray emitting narrow-line Seyfert 1 galaxy PKS 1502+036
    journal, June 2013

    • D'Ammando, F.; Orienti, M.; Doi, A.
    • Monthly Notices of the Royal Astronomical Society, Vol. 433, Issue 2
    • DOI: 10.1093/mnras/stt778

    INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey: II. Catalog of sources⋆⋆⋆
    journal, November 2010


    Radio-to- γ -ray monitoring of the narrow-line Seyfert 1 galaxy PMN J0948 + 0022 from 2008 to 2011
    journal, November 2012


    What powers the radio-loud narrow-line Seyfert 1 galaxy RX J2314.9+2243?: A view onto its central engine from radio to X-rays⋆
    journal, February 2015


    The gamma-ray emitting radio-loud narrow-line Seyfert 1 galaxy PKS 2004−447: I. The X-ray View
    journal, December 2015


    Radio jet emission from GeV-emitting narrow-line Seyfert 1 galaxies
    journal, February 2015


    Coexistence of a non-thermal jet and a complex ultra-fast X-ray outflow in a moderately luminous AGN
    journal, April 2017


    37 GHz observations of narrow-line Seyfert 1 galaxies
    journal, July 2017


    Optical polarisation variability of radio-loud narrow-line Seyfert 1 galaxies: Search for long rotations of the polarisation plane
    journal, October 2018


    BROAD-LINE RADIO GALAXIES OBSERVED WITH FERMI -LAT: THE ORIGIN OF THE GeV γ-RAY EMISSION
    journal, September 2011


    Intranight optical variability of  -ray-loud narrow-line Seyfert 1 galaxies
    journal, November 2012

    • 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 ordinary life of the γ-ray emitting narrow-line Seyfert 1 galaxy PKS 1502+036
    journal, June 2013

    • D'Ammando, F.; Orienti, M.; Doi, A.
    • Monthly Notices of the Royal Astronomical Society, Vol. 433, Issue 2
    • DOI: 10.1093/mnras/stt778

    Correlation of Fermi Large Area Telescope sources with the 20-GHz Australia Telescope Compact Array radio survey: AT20G-1FGL
    journal, July 2010


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


    SBS 0846+513: a new γ-ray-emitting narrow-line Seyfert 1 galaxy: SBS 0846+513: a new γ-ray-emitting NLS1
    journal, September 2012


    Probing Narrow-Line Seyfert 1 Galaxies In The Southern Hemisphere
    text, January 2018


    Patterns in the Multiwavelength Behavior of Candidate Neutrino Blazars
    journal, April 2020


    INTEGRAL/IBIS 7-year All-Sky Hard X-ray Survey: I. Image reconstruction
    journal, September 2010


    The gamma-ray emitting radio-loud narrow-line Seyfert 1 galaxy PKS 2004−447: II. The radio view⋆
    journal, April 2016