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Title: The third catalog of active galactic nuclei detected by the Fermi large area telescope

Abstract

We present the third catalog of active galactic nuclei (AGNs) detected by the Fermi-LAT (3LAC). It is based on the third Fermi-LAT catalog (3FGL) of sources detected between 100 MeV and 300 GeV with a Test Statistic greater than 25, between 2008 August 4 and 2012 July 31. The 3LAC includes 1591 AGNs located at high Galactic latitudes ($$| b| \gt 10^\circ $$), a 71% increase over the second catalog based on 2 years of data. There are 28 duplicate associations, thus 1563 of the 2192 high-latitude gamma-ray sources of the 3FGL catalog are AGNs. Most of them (98%) are blazars. About half of the newly detected blazars are of unknown type, i.e., they lack spectroscopic information of sufficient quality to determine the strength of their emission lines. Based on their gamma-ray spectral properties, these sources are evenly split between flat-spectrum radio quasars (FSRQs) and BL Lacs. The most abundant detected BL Lacs are of the high-synchrotron-peaked (HSP) type. There were about 50% of the BL Lacs that had no measured redshifts. A few new rare outliers (HSP-FSRQs and high-luminosity HSP BL Lacs) are reported. The general properties of the 3LAC sample confirm previous findings from earlier catalogs. The fraction of 3LAC blazars in the total population of blazars listed in BZCAT remains non-negligible even at the faint ends of the BZCAT-blazar radio, optical, and X-ray flux distributions, which hints that even the faintest known blazars could eventually shine in gamma-rays at LAT-detection levels. Furthermore, the energy-flux distributions of the different blazar populations are in good agreement with extrapolation from earlier catalogs.

Authors:
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Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1354914
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 810; Journal Issue: 1; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; BL Lacertae objects: general; galaxies: active; galaxies: jets; gamma rays: galaxies

Citation Formats

Ackermann, M., Ajello, M., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Gonzalez, J. Becerra, Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Britto, R. J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Carpenter, B., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Cominsky, L. R., Conrad, J., Cutini, S., D’Abrusco, R., D’Ammando, F., Angelis, A. de, Desiante, R., Digel, S. W., Venere, L. Di, Drell, P. S., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Finke, J., Focke, W. B., Franckowiak, A., Fuhrmann, L., Fukazawa, Y., Furniss, A. K., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guiriec, S., Hewitt, J. W., Hill, A. B., Horan, D., Itoh, R., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kataoka, J., Kawano, T., Krauss, F., Kuss, M., Mura, G. La, Larsson, S., Latronico, L., Leto, C., Li, J., Li, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Mayer, M., Mazziotta, M. N., McEnery, J. E., Michelson, P. F., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nuss, E., Ohno, M., Ohsugi, T., Ojha, R., Omodei, N., Orienti, M., Orlando, E., Paggi, A., Paneque, D., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Romani, R. W., Salvetti, D., Schaal, M., Schinzel, F. K., Schulz, A., Sgrò, C., Siskind, E. J., Sokolovsky, K. V., Spada, F., Spandre, G., Spinelli, P., Stawarz, L., Suson, D. J., Takahashi, H., Takahashi, T., Tanaka, Y., Thayer, J. G., Thayer, J. B., Tibaldo, L., Torres, D. F., Torresi, E., Tosti, G., Troja, E., Uchiyama, Y., Vianello, G., Winer, B. L., Wood, K. S., and Zimmer, S. The third catalog of active galactic nuclei detected by the Fermi large area telescope. United States: N. p., 2015. Web. doi:10.1088/0004-637X/810/1/14.
Ackermann, M., Ajello, M., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Gonzalez, J. Becerra, Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Britto, R. J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Carpenter, B., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Cominsky, L. R., Conrad, J., Cutini, S., D’Abrusco, R., D’Ammando, F., Angelis, A. de, Desiante, R., Digel, S. W., Venere, L. Di, Drell, P. S., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Finke, J., Focke, W. B., Franckowiak, A., Fuhrmann, L., Fukazawa, Y., Furniss, A. K., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guiriec, S., Hewitt, J. W., Hill, A. B., Horan, D., Itoh, R., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kataoka, J., Kawano, T., Krauss, F., Kuss, M., Mura, G. La, Larsson, S., Latronico, L., Leto, C., Li, J., Li, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Mayer, M., Mazziotta, M. N., McEnery, J. E., Michelson, P. F., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nuss, E., Ohno, M., Ohsugi, T., Ojha, R., Omodei, N., Orienti, M., Orlando, E., Paggi, A., Paneque, D., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Romani, R. W., Salvetti, D., Schaal, M., Schinzel, F. K., Schulz, A., Sgrò, C., Siskind, E. J., Sokolovsky, K. V., Spada, F., Spandre, G., Spinelli, P., Stawarz, L., Suson, D. J., Takahashi, H., Takahashi, T., Tanaka, Y., Thayer, J. G., Thayer, J. B., Tibaldo, L., Torres, D. F., Torresi, E., Tosti, G., Troja, E., Uchiyama, Y., Vianello, G., Winer, B. L., Wood, K. S., & Zimmer, S. The third catalog of active galactic nuclei detected by the Fermi large area telescope. United States. https://doi.org/10.1088/0004-637X/810/1/14
Ackermann, M., Ajello, M., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Gonzalez, J. Becerra, Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Britto, R. J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Carpenter, B., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Cominsky, L. R., Conrad, J., Cutini, S., D’Abrusco, R., D’Ammando, F., Angelis, A. de, Desiante, R., Digel, S. W., Venere, L. Di, Drell, P. S., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Finke, J., Focke, W. B., Franckowiak, A., Fuhrmann, L., Fukazawa, Y., Furniss, A. K., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guiriec, S., Hewitt, J. W., Hill, A. B., Horan, D., Itoh, R., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kataoka, J., Kawano, T., Krauss, F., Kuss, M., Mura, G. La, Larsson, S., Latronico, L., Leto, C., Li, J., Li, L., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Mayer, M., Mazziotta, M. N., McEnery, J. E., Michelson, P. F., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nuss, E., Ohno, M., Ohsugi, T., Ojha, R., Omodei, N., Orienti, M., Orlando, E., Paggi, A., Paneque, D., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Romani, R. W., Salvetti, D., Schaal, M., Schinzel, F. K., Schulz, A., Sgrò, C., Siskind, E. J., Sokolovsky, K. V., Spada, F., Spandre, G., Spinelli, P., Stawarz, L., Suson, D. J., Takahashi, H., Takahashi, T., Tanaka, Y., Thayer, J. G., Thayer, J. B., Tibaldo, L., Torres, D. F., Torresi, E., Tosti, G., Troja, E., Uchiyama, Y., Vianello, G., Winer, B. L., Wood, K. S., and Zimmer, S. Tue . "The third catalog of active galactic nuclei detected by the Fermi large area telescope". United States. https://doi.org/10.1088/0004-637X/810/1/14. https://www.osti.gov/servlets/purl/1354914.
@article{osti_1354914,
title = {The third catalog of active galactic nuclei detected by the Fermi large area telescope},
author = {Ackermann, M. and Ajello, M. and Atwood, W. B. and Baldini, L. and Ballet, J. and Barbiellini, G. and Bastieri, D. and Gonzalez, J. Becerra and Bellazzini, R. and Bissaldi, E. and Blandford, R. D. and Bloom, E. D. and Bonino, R. and Bottacini, E. and Brandt, T. J. and Bregeon, J. and Britto, R. J. and Bruel, P. and Buehler, R. and Buson, S. and Caliandro, G. A. and Cameron, R. A. and Caragiulo, M. and Caraveo, P. A. and Carpenter, B. and Casandjian, J. M. and Cavazzuti, E. and Cecchi, C. and Charles, E. and Chekhtman, A. and Cheung, C. C. and Chiang, J. and Chiaro, G. and Ciprini, S. and Claus, R. and Cohen-Tanugi, J. and Cominsky, L. R. and Conrad, J. and Cutini, S. and D’Abrusco, R. and D’Ammando, F. and Angelis, A. de and Desiante, R. and Digel, S. W. and Venere, L. Di and Drell, P. S. and Favuzzi, C. and Fegan, S. J. and Ferrara, E. C. and Finke, J. and Focke, W. B. and Franckowiak, A. and Fuhrmann, L. and Fukazawa, Y. and Furniss, A. K. and Fusco, P. and Gargano, F. and Gasparrini, D. and Giglietto, N. and Giommi, P. and Giordano, F. and Giroletti, M. and Glanzman, T. and Godfrey, G. and Grenier, I. A. and Grove, J. E. and Guiriec, S. and Hewitt, J. W. and Hill, A. B. and Horan, D. and Itoh, R. and Jóhannesson, G. and Johnson, A. S. and Johnson, W. N. and Kataoka, J. and Kawano, T. and Krauss, F. and Kuss, M. and Mura, G. La and Larsson, S. and Latronico, L. and Leto, C. and Li, J. and Li, L. and Longo, F. and Loparco, F. and Lott, B. and Lovellette, M. N. and Lubrano, P. and Madejski, G. M. and Mayer, M. and Mazziotta, M. N. and McEnery, J. E. and Michelson, P. F. and Mizuno, T. and Moiseev, A. A. and Monzani, M. E. and Morselli, A. and Moskalenko, I. V. and Murgia, S. and Nuss, E. and Ohno, M. and Ohsugi, T. and Ojha, R. and Omodei, N. and Orienti, M. and Orlando, E. and Paggi, A. and Paneque, D. and Perkins, J. S. and Pesce-Rollins, M. and Piron, F. and Pivato, G. and Porter, T. A. and Rainò, S. and Rando, R. and Razzano, M. and Razzaque, S. and Reimer, A. and Reimer, O. and Romani, R. W. and Salvetti, D. and Schaal, M. and Schinzel, F. K. and Schulz, A. and Sgrò, C. and Siskind, E. J. and Sokolovsky, K. V. and Spada, F. and Spandre, G. and Spinelli, P. and Stawarz, L. and Suson, D. J. and Takahashi, H. and Takahashi, T. and Tanaka, Y. and Thayer, J. G. and Thayer, J. B. and Tibaldo, L. and Torres, D. F. and Torresi, E. and Tosti, G. and Troja, E. and Uchiyama, Y. and Vianello, G. and Winer, B. L. and Wood, K. S. and Zimmer, S.},
abstractNote = {We present the third catalog of active galactic nuclei (AGNs) detected by the Fermi-LAT (3LAC). It is based on the third Fermi-LAT catalog (3FGL) of sources detected between 100 MeV and 300 GeV with a Test Statistic greater than 25, between 2008 August 4 and 2012 July 31. The 3LAC includes 1591 AGNs located at high Galactic latitudes ($| b| \gt 10^\circ $), a 71% increase over the second catalog based on 2 years of data. There are 28 duplicate associations, thus 1563 of the 2192 high-latitude gamma-ray sources of the 3FGL catalog are AGNs. Most of them (98%) are blazars. About half of the newly detected blazars are of unknown type, i.e., they lack spectroscopic information of sufficient quality to determine the strength of their emission lines. Based on their gamma-ray spectral properties, these sources are evenly split between flat-spectrum radio quasars (FSRQs) and BL Lacs. The most abundant detected BL Lacs are of the high-synchrotron-peaked (HSP) type. There were about 50% of the BL Lacs that had no measured redshifts. A few new rare outliers (HSP-FSRQs and high-luminosity HSP BL Lacs) are reported. The general properties of the 3LAC sample confirm previous findings from earlier catalogs. The fraction of 3LAC blazars in the total population of blazars listed in BZCAT remains non-negligible even at the faint ends of the BZCAT-blazar radio, optical, and X-ray flux distributions, which hints that even the faintest known blazars could eventually shine in gamma-rays at LAT-detection levels. Furthermore, the energy-flux distributions of the different blazar populations are in good agreement with extrapolation from earlier catalogs.},
doi = {10.1088/0004-637X/810/1/14},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 810,
place = {United States},
year = {Tue Aug 25 00:00:00 EDT 2015},
month = {Tue Aug 25 00:00:00 EDT 2015}
}

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Figures / Tables:

Fig. 1 Fig. 1: Point-source flux limit in units of ph cm−2 s−1 for $E$ > 100 MeV and photon spectral index $Γ$ = 2.2 as a function of sky location (in Galactic coordinates) for the 3LAC time interval.

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Investigation of Two Fermi -LAT Gamma-Ray Blazars Coincident with High-energy Neutrinos Detected by IceCube
text, January 2019

  • Garrappa, S.; Buson, S.; Franckowiak, A.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2019-03715

Fermi Large Area Telescope Fourth Source Catalog
text, January 2020

  • Abdollahi, S.; Acero, F.; Ackermann, Markus
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2020-01400

On the Connection of Radio and γ-Ray Emission in Blazars
journal, December 2018

  • Boula, Stella; Petropoulou, Maria; Mastichiadis, Apostolos
  • Galaxies, Vol. 7, Issue 1
  • DOI: 10.3390/galaxies7010003

SEARCHING FOR DARK MATTER ANNIHILATION IN RECENTLY DISCOVERED MILKY WAY SATELLITES WITH FERMI -LAT
journal, January 2017


An X-Ray Imaging Survey of Quasar Jets: The Complete Survey
journal, March 2018

  • Marshall, H. L.; Gelbord, J. M.; Worrall, D. M.
  • The Astrophysical Journal, Vol. 856, Issue 1
  • DOI: 10.3847/1538-4357/aaaf66

On the Multiwavelength Emission from CTA 102
journal, August 2018

  • Gasparyan, S.; Sahakyan, N.; Baghmanyan, V.
  • The Astrophysical Journal, Vol. 863, Issue 2
  • DOI: 10.3847/1538-4357/aad234

Missing Gamma-Ray Halos and the Need for New Physics in the Gamma-Ray Sky
journal, November 2018

  • Broderick, Avery E.; Tiede, Paul; Chang, Philip
  • The Astrophysical Journal, Vol. 868, Issue 2
  • DOI: 10.3847/1538-4357/aae5f2

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


The Properties of Parsec-scale Blazar Jets
journal, January 2019


MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-loud Blazars
journal, March 2019


Characterizing the Gamma-Ray Variability of the Brightest Flat Spectrum Radio Quasars Observed with the Fermi LAT
journal, May 2019

  • Meyer, Manuel; Scargle, Jeffrey D.; Blandford, Roger D.
  • The Astrophysical Journal, Vol. 877, Issue 1
  • DOI: 10.3847/1538-4357/ab1651

Ejection of Double Knots from the Radio Core of PKS 1510–089 during the Strong Gamma-Ray Flares in 2015
journal, May 2019

  • Park, Jongho; Lee, Sang-Sung; Kim, Jae-Young
  • The Astrophysical Journal, Vol. 877, Issue 2
  • DOI: 10.3847/1538-4357/ab1b27

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


MOJAVE. XV. VLBA 15 GHz Total Intensity and Polarization Maps of 437 Parsec-scale AGN Jets from 1996 to 2017
journal, January 2018

  • Lister, M. L.; Aller, M. F.; Aller, H. D.
  • The Astrophysical Journal Supplement Series, Vol. 234, Issue 1
  • DOI: 10.3847/1538-4365/aa9c44

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


Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective
journal, June 2018


X-ray study of a sample of FR0 radio galaxies: unveiling the nature of the central engine
journal, March 2018

  • Torresi, E.; Grandi, P.; Capetti, A.
  • Monthly Notices of the Royal Astronomical Society, Vol. 476, Issue 4
  • DOI: 10.1093/mnras/sty520

3FHL: The Third Catalog of Hard Fermi -LAT Sources
text, January 2017


Multiwavelength follow-up of a rare IceCube neutrino multiplet
text, January 2017

  • Aartsen, M. G.; Ackermann, M.; Adams, J.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2017-12822

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

Multiwavelength follow-up of a rare IceCube neutrino multiplet
journal, November 2017


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

Fermi Large Area Telescope Fourth Source Catalog
collection, January 2020


Search for Spectral Irregularities due to Photon–Axionlike-Particle Oscillations with the Fermi Large Area Telescope
text, January 2016


Measurement of the extragalactic background light spectral energy distribution with VERITAS
text, January 2019

  • Collaboration, Veritas; Abeysekara, A. U.; Archer, A.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2019-05351

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

Interpretation of the diffuse astrophysical neutrino flux in terms of the blazar sequence
text, January 2018

  • Palladino, Andrea; Rodrigues, Xavier; Gao, Shan
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2018-03350

Patterns in the multi-wavelength behavior of candidate neutrino blazars
text, January 2020

  • Franckowiak, Anna; Garrappa, Simone; Paliya, Vaidehi Sharan
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2020-02147

Evidence against star-forming galaxies as the dominant source of IceCube neutrinos
text, January 2015


Optical polarization of high-energy BL Lac objects
text, January 2016


Systematic Study of Gamma-ray bright Blazars with Optical Polarization and Gamma-ray Variability
text, January 2016


3FHL: The Third Catalog of Hard Fermi-LAT Sources
text, January 2017


Bow Ties in the Sky II: Searching for Gamma-ray Halos in the Fermi Sky Using Anisotropy
text, January 2017


Intrinsic Correlations for Flaring Blazars Detected by Fermi
text, January 2017


The Ratio of the Core to the Extended Emissions in the Comoving Frame for Blazars
text, January 2017


Active Galactic Nuclei: what's in a name?
text, January 2017


The flat-spectrum radio quasar 3C 345 from the high to the low emission state
text, January 2017


Plasmoid statistics in relativistic magnetic reconnection
text, January 2017


Fermi-LAT Observation of Non-Blazar AGNs
text, January 2018


An X-ray Imaging Survey of Quasar Jets -- The Complete Survey
text, January 2018


Planck intermediate results. LIV. The Planck Multi-frequency Catalogue of Non-thermal Sources
text, January 2018


On the origin of gamma rays in Fermi blazars: beyond the broad line region
text, January 2018


Interpretation of the diffuse astrophysical neutrino flux in terms of the blazar sequence
text, January 2018


MOJAVE XVI: Multi-Epoch Linear Polarization Properties of Parsec-Scale AGN Jet Cores
text, January 2018


On the multi-wavelength Emission from CTA 102
text, January 2018


Identifying the 3FHL catalog: I. Results of the KOSMOS optical spectroscopy campaign
text, January 2018


Blazar jets as the most efficient persistent engines
preprint, January 2018


A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131
text, January 2018


Blazars in the LOFAR Two-Metre Sky Survey First Data Release
text, January 2018


Gamma rays from jets interacting with BLR clouds in blazars
text, January 2019


Evaluating the optical classification of Fermi BCUs using machine learning
text, January 2019


Investigation of the WR 11 field at decimeter wavelengths
text, January 2019


Inter-Plasmoid Compton Scattering and the Compton Dominance of BL Lacs
text, January 2019


Optical characterization of WISE selected blazar candidates
text, January 2019


The High Energy View of FR0 Radio Galaxies
preprint, January 2019


Identifying TeV Source Candidates among Fermi-LAT Unclassified Blazars
text, January 2019