THE FIRST CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE

By A. Abdo, M. Ackermann, M. Ajello, A. Allafort, E. Antolini, W. Atwood, M. Axelsson, L. Baldini, J. Ballet, G. Barbiellini and 198 more. 2010

511 citations recorded by the source corpus.

We present the first catalog of active galactic nuclei (AGNs) detected by the Large Area Telescope (LAT), corresponding to 11 months of data collected in scientific operation mode. The First LAT AGN Catalog (1LAC) includes 671 γ-ray sources located at high Galactic latitudes (|b|>10°) that are detected with a test statistic greater than 25 and associated statistically with AGNs. Some LAT sources are associated with multiple AGNs, and consequently, the catalog includes 709 AGNs, comprising 300 BL Lacertae objects, 296 flat-spectrum radio quasars, 41 AGNs of other types, and 72 AGNs of unknown type. We also classify the blazars based on their spectral energy distributions as archival radio, optical, and X-ray data permit. In addition to the formal 1LAC sample, we provide AGN associations for 51 low-latitude LAT sources and AGN “affiliations” (unquantified counterpart candidates) for 104 high-latitude LAT sources without AGN associations. The overlap of the 1LAC with existing γ-ray AGN catalogs (LBAS, EGRET, AGILE, Swift, INTEGRAL, TeVCat) is briefly discussed. Various properties—such as γ-ray fluxes and photon power-law spectral indices, redshifts, γ-ray luminosities, variability, and archival radio luminosities—and their correlations are presented and discussed for the different blazar classes. We compare the 1LAC results with predictions regarding the γ-ray AGN populations, and we comment on the power of the sample to address the question of the blazar sequence.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/708b0f2d4f48835e5392316163171859e716c223

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Citations in the corpus

Semi-analytic modeling of the EBL and consequences for extragalactic gamma-ray spectra (2011, methodology): “Rev., 48, 465 Wright E. L., Reese E. D., 2000, ApJ, 545, 43 Wyder T. K. et al., 2005, ApJ, 619, L15 Xu C. K. et al., 2005, ApJ, 619, L11 Yang J., Wang J., 2010, A&A, 522, A12 Zemcov M. et al., 2011, preprint (arXiv:1101.1560) This paper has been typeset from a TEX/LATEX file prepared by the author.”
THE LUMINOSITY FUNCTION OF FERMI-DETECTED FLAT-SPECTRUM RADIO QUASARS (2011, methodology): “This is done in order to reproduce the inherent systematic uncertainty of ﬁtting the curved spectrum of a source with a power law (Abdo et al. 2010a).”
GAMMA-RAY LIGHT CURVES AND VARIABILITY OF BRIGHT FERMI-DETECTED BLAZARS (2010, methodology): “In agreement with the results of Section 3 and the spectral results reported in Abdo et al. (2010b), the HSP BL Lac objects are well separated, being at the lowest redshift and least variable sources (with the exception of ON 325 as mentioned in the previous section).”
BLAZARS IN THE FERMI ERA: THE OVRO 40 m TELESCOPE MONITORING PROGRAM (2010, methodology): “These facts may be related: it has already been shown in Abdo et al. (2010b) that the decrease in LAT effective area below 0.3 GeV has strongly biased the LAT detections to the relatively hard-spectrum high-peak blazars, especially the BL Lacs, compared to the EGRET sample.”
SPECTROSCOPY OF BROAD-LINE BLAZARS FROM 1LAC (2012, methodology): “The Fermi LAT First Source Catalog (Abdo et al. 2010a, 1FGL) catalogs the 1451 most significant sources detected in Fermi’s first year of operation.”
Sensitivity projections for dark matter searches with the Fermi large area telescope (2016, methodology): “However, competitive limits on the DM annihilation cross section have been derived in several studies relying on the EGB intensity (e.g., Abdo et al. 2010a; Bringmann et al. 2014; Cholis et al. 2014) or the anisotropy level (Gómez-Vargas et al. 2014).”
Simultaneous Planck, Swift, and Fermi observations of X-ray and γ-ray selected blazars (2011, methodology): “Significant progress has been made with the publication of a compilation of quasi-simultaneous SEDs of a large sample of γray bright blazars (Abdo et al. 2010a).”
A simplified view of blazars: clearing the fog around long‐standing selection effects (2011, methodology): “…far ⋆ E-mail: paolo.giommi@asdc.asi.it about 3,000 blazars are known (Massaro et al. 2009, 2011), but their number is steadily growing thanks to the Fermi (Abdo et al. 2010b, 2011), the optical Sloan Digital Sky Survey (SDSS: Plotkin et al. 2010), and the Planck (Planck Collaboration 2011) surveys.”
Semi-analytic modelling of the extragalactic background light and consequences for extragalactic gamma-ray spectra: Modelling of the EBL and gamma-ray spectra (2012, methodology): “Rev., 48, 465 Wright E. L., Reese E. D., 2000, ApJ, 545, 43 Wyder T. K. et al., 2005, ApJ, 619, L15 Xu C. K. et al., 2005, ApJ, 619, L11 Yang J., Wang J., 2010, A&A, 522, A12 Zemcov M. et al., 2011, preprint (arXiv:1101.1560) This paper has been typeset from a TEX/LATEX file prepared by the author.”
THE THIRD CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE (2015, methodology): “All the 1FGL sources, detected in 11 months of exposure, were subsequently studied with 15 months of data (Abdo et al. 2010e).”
EVIDENCE FOR GAMMA-RAY HALOS AROUND ACTIVE GALACTIC NUCLEI AND THE FIRST MEASUREMENT OF INTERGALACTIC MAGNETIC FIELDS (2010, background): “This does not introduce any significant uncertainty of the stacked images, because the localization accuracy using gamma rays is typically much better than the size of PSF especially for hard AGN (Abdo et al. 2010b).”