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

By A. Abdo, M. Ackermann, M. Ajello, W. Atwood, M. Axelsson, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, B. Baughman and 183 more. 2009

342 citations recorded by the source corpus.

The first three months of sky-survey operation with the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope reveal 132 bright sources at |b|>10° with test statistic greater than 100 (corresponding to about 10σ). Two methods, based on the CGRaBS, CRATES, and BZCat catalogs, indicate high-confidence associations of 106 of these sources with known active galactic nuclei (AGNs). This sample is referred to as the LAT Bright AGN Sample (LBAS). It contains two radio galaxies, namely, Centaurus A and NGC 1275, and 104 blazars consisting of 58 flat spectrum radio quasars (FSRQs), 42 BL Lac objects, and 4 blazars with unknown classification. Four new blazars were discovered on the basis of the LAT detections. Remarkably, the LBAS includes 10 high-energy-peaked BL Lacs (HBLs), sources which were previously difficult to detect in the GeV range. Another 10 lower-confidence associations are found. Only 33 of the sources, plus two at |b| < 10°, were previously detected with Energetic Gamma-Ray Experiment Telescope(EGRET), probably due to variability. The analysis of the γ-ray properties of the LBAS sources reveals that the average GeV spectra of BL Lac objects are significantly harder than the spectra of FSRQs. No significant correlation between radio and peak γ-ray fluxes is observed. Blazar log N–log S distributions and luminosity functions are constructed to investigate the evolution of the different blazar classes, with positive evolution indicated for FSRQs but none for BL Lacs. The contribution of LAT blazars to the total extragalactic γ-ray intensity is estimated.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/190d6da1fb8f0b2d21db5a281cd151adf7a61fa4

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In Astronomy and Astrophysics

1. Bing Zhang
2. G. Ghisellini
3. F. Tavecchio
4. Y. Kovalev
5. M. Lister
6. T. Savolainen
7. A. Pushkarev
8. L. Maraschi

In Nuclear and High Energy Physics

1. F. Tavecchio
2. G. Ghisellini
3. Y. Kovalev
4. C. Dermer
5. M. Lister
6. T. Savolainen
7. L. Maraschi
8. Luigi Foschini

Citations in the corpus

• THE EVOLUTION OF SWIFT/BAT BLAZARS AND THE ORIGIN OF THE MeV BACKGROUND (2009, methodology): “Moreover, we also checked how many BAT blazars were also detected by Fermi-LAT in the first three months – 9 – of operations (Abdo 2009b).”
• Properties of flat-spectrum radio-loud Narrow-Line Seyfert 1 Galaxies (2014, methodology): “However, since the optical spectrum of SDSS was observed in 2000 and the MW campaign used for the SED modelling were obtained in 2008–2011, it is also possible that the Eddington ratio really changed.”
• Relativistic beaming and gamma-ray brightness of blazars (2009, background): “%) sources in the MM sample that are associated with bright LAT-detectedγ-ray sources (Abdo et al. 2009b): 15 quasars (31% of the quasars in the MM sample) and 8 BL Lacs (57% of the BL Lacs).”
• THE SPECTRAL ENERGY DISTRIBUTIONS OF FERMI BLAZARS (2016, methodology): “…and high luminosity, high and variable polarization, superluminal motions, core-dominated non-thermal continuum and strong γ-ray emissions, etc. ( Abdo et al. 2009a, 2010b,c; Acero et al. 2015; Ackermann et al. 2011a,b, 2015; Aller et al. 2011; Bai, et al. 1998; Bastieri et al. 2011; Chen et…”
• THE COSMOLOGICAL IMPACT OF LUMINOUS TeV BLAZARS. I. IMPLICATIONS OF PLASMA INSTABILITIES FOR THE INTERGALACTIC MAGNETIC FIELD AND EXTRAGALACTIC GAMMA-RAY BACKGROUND (2011, background): “2; see the spectral index distribution of Figure 14 in Abdo et al. (2009)).”
• Jet opening angles and gamma-ray brightness of AGN (2009, methodology): “Hereafter we refer to the Fermi LAT 3-month bright source list (Abdo et al. 2009a) when using the term LAT-detected.”
• Complex Faraday depth structure of active galactic nuclei as revealed by broad‐band radio polarimetry (2012, background): “It is coincident with an unresolved X-ray source (Voges et al. 1999) and has a GeV γ -ray detection in both the first and second Fermi-LAT catalogues (Abdo et al. 2009, 2012).”
• TeV BL Lac objects at the dawn of the Fermi era (2009, background): “Moreover, for three sources reported in Table 1 (0141+268, 2 Note that one of the sources classified as a FSRQ is a radio-loud narrowline Seyfert 1 galaxy (Abdo et al. 2009b; Foschini et al. 2009).”