FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG

F. Acero; M. Ackermann; M. Ajello; A. Albert; W. B. Atwood; M. Axelsson; L. Baldini; J. Ballet; G. Barbiellini; D. Bastieri; A. Belfiore; R. Bellazzini; E. Bissaldi; R. D. Blandford; E. D. Bloom; J. R. Bogart; R. Bonino; E. Bottacini; J. Bregeon; R. J. Britto; P. Bruel; R. Buehler; T. H. Burnett; S. Buson; G. A. Caliandro; R. A. Cameron; R. Caputo; M. Caragiulo; P. A. Caraveo; J. M. Casandjian; E. Cavazzuti; E. Charles; R. C.G. Chaves; A. Chekhtman; C. C. Cheung; J. Chiang; G. Chiaro; S. Ciprini; R. Claus; J. Cohen-Tanugi; L. R. Cominsky; J. Conrad; S. Cutini; F. D'Ammando; A. De Angelis; M. Deklotz; F. De Palma; R. Desiante; S. W. Digel; L. Di Venere; P. S. Drell; R. Dubois; D. Dumora; C. Favuzzi; S. J. Fegan; E. C. Ferrara; J. Finke; A. Franckowiak; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; B. Giebels; N. Giglietto; P. Giommi; F. Giordano; M. Giroletti; T. Glanzman; G. Godfrey; I. A. Grenier; M. H. Grondin; J. E. Grove; L. Guillemot; S. Guiriec; D. Hadasch; A. K. Harding; E. Hays; J. W. Hewitt; A. B. Hill; D. Horan; G. Iafrate; T. Jogler; G. Jóhannesson; R. P. Johnson; A. S. Johnson; T. J. Johnson; W. N. Johnson; T. Kamae; J. Kataoka; J. Katsuta; M. Kuss; G. La Mura; D. Landriu; S. Larsson; L. Latronico; M. Lemoine-Goumard; J. Li; L. Li; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; G. M. Madejski; F. Massaro; M. Mayer; M. N. Mazziotta; J. E. McEnery; P. F. Michelson; N. Mirabal; T. Mizuno; A. A. Moiseev; M. Mongelli; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; E. Nuss; M. Ohno; T. Ohsugi; N. Omodei; M. Orienti; E. Orlando; J. F. Ormes; D. Paneque; J. H. Panetta; J. S. Perkins; M. Pesce-Rollins; F. Piron; G. Pivato; T. A. Porter; J. L. Racusin; R. Rando; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; T. Reposeur; L. S. Rochester; R. W. Romani; D. Salvetti; M. Sánchez-Conde; P. M.Saz Parkinson; A. Schulz; E. J. Siskind; D. A. Smith; F. Spada; G. Spandre; P. Spinelli; T. E. Stephens; A. W. Strong; D. J. Suson; H. Takahashi; T. Takahashi; Y. Tanaka; J. G. Thayer; J. B. Thayer; D. J. Thompson; L. Tibaldo; O. Tibolla; D. F. Torres; E. Torresi; G. Tosti; E. Troja; B. Van Klaveren; G. Vianello; B. L. Winer; K. S. Wood; M. Wood; S. Zimmer

doi:10.1088/0067-0049/218/2/23

FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG

F. Acero, M. Ackermann, M. Ajello, A. Albert, W. B. Atwood, M. Axelsson, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, A. Belfiore, R. Bellazzini, E. Bissaldi, R. D. Blandford, E. D. Bloom, J. R. Bogart, R. Bonino, E. Bottacini, J. Bregeon, R. J. BrittoP. Bruel, R. Buehler, T. H. Burnett, S. Buson, G. A. Caliandro, R. A. Cameron, R. Caputo, M. Caragiulo, P. A. Caraveo, J. M. Casandjian, E. Cavazzuti, E. Charles, R. C.G. Chaves, A. Chekhtman, C. C. Cheung, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, L. R. Cominsky, J. Conrad, S. Cutini, F. D'Ammando, A. De Angelis, M. Deklotz, F. De Palma, R. Desiante, S. W. Digel, L. Di Venere, P. S. Drell, R. Dubois, D. Dumora, C. Favuzzi, S. J. Fegan, E. C. Ferrara, J. Finke, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, B. Giebels, N. Giglietto, P. Giommi, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier, M. H. Grondin, J. E. Grove, L. Guillemot, S. Guiriec, D. Hadasch, A. K. Harding, E. Hays, J. W. Hewitt, A. B. Hill, D. Horan, G. Iafrate, T. Jogler, G. Jóhannesson, R. P. Johnson, A. S. Johnson, T. J. Johnson, W. N. Johnson, T. Kamae, J. Kataoka, J. Katsuta, M. Kuss, G. La Mura, D. Landriu, S. Larsson, L. Latronico, M. Lemoine-Goumard, J. Li, L. Li, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, G. M. Madejski, F. Massaro, M. Mayer, M. N. Mazziotta, J. E. McEnery, P. F. Michelson, N. Mirabal, T. Mizuno, A. A. Moiseev, M. Mongelli, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, E. Nuss, M. Ohno, T. Ohsugi, N. Omodei, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, J. H. Panetta, J. S. Perkins, M. Pesce-Rollins, F. Piron, G. Pivato, T. A. Porter, J. L. Racusin, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, T. Reposeur, L. S. Rochester, R. W. Romani, D. Salvetti, M. Sánchez-Conde, P. M.Saz Parkinson, A. Schulz, E. J. Siskind, D. A. Smith, F. Spada, G. Spandre, P. Spinelli, T. E. Stephens, A. W. Strong, D. J. Suson, H. Takahashi, T. Takahashi, Y. Tanaka, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo, O. Tibolla, D. F. Torres, E. Torresi, G. Tosti, E. Troja, B. Van Klaveren, G. Vianello, B. L. Winer, K. S. Wood, M. Wood, S. Zimmer

Research output: Contribution to journal › Article › peer-review

1298 Citations (Scopus)

Abstract

We present the third Fermi Large Area Telescope (LAT) source catalog (3FGL) of sources in the 100 MeV-300 GeV range. Based on the first 4 yr of science data from the Fermi Gamma-ray Space Telescope mission, it is the deepest yet in this energy range. Relative to the Second Fermi LAT catalog, the 3FGL catalog incorporates twice as much data, as well as a number of analysis improvements, including improved calibrations at the event reconstruction level, an updated model for Galactic diffuse γ-ray emission, a refined procedure for source detection, and improved methods for associating LAT sources with potential counterparts at other wavelengths. The 3FGL catalog includes 3033 sources above significance, with source location regions, spectral properties, and monthly light curves for each. Of these, 78 are flagged as potentially being due to imperfections in the model for Galactic diffuse emission. Twenty-five sources are modeled explicitly as spatially extended, and overall 238 sources are considered as identified based on angular extent or correlated variability (periodic or otherwise) observed at other wavelengths. For 1010 sources we have not found plausible counterparts at other wavelengths. More than 1100 of the identified or associated sources are active galaxies of the blazar class; several other classes of non-blazar active galaxies are also represented in the 3FGL. Pulsars represent the largest Galactic source class. From source counts of Galactic sources we estimate that the contribution of unresolved sources to the Galactic diffuse emission is ∼3% at 1 GeV.

Original language	English
Article number	23
Journal	Astrophysical Journal, Supplement Series
Volume	218
Issue number	2
DOIs	https://doi.org/10.1088/0067-0049/218/2/23
Publication status	Published - 2015 Jun 22

Keywords

catalogs
gamma-rays: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1088/0067-0049/218/2/23

Cite this

Acero, F., Ackermann, M., Ajello, M., Albert, A., Atwood, W. B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Belfiore, A., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bogart, J. R., Bonino, R., Bottacini, E., Bregeon, J., ... Zimmer, S. (2015). FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG. Astrophysical Journal, Supplement Series, 218(2), [23]. https://doi.org/10.1088/0067-0049/218/2/23

Acero, F, Ackermann, M, Ajello, M, Albert, A, Atwood, WB, Axelsson, M, Baldini, L, Ballet, J, Barbiellini, G, Bastieri, D, Belfiore, A, Bellazzini, R, Bissaldi, E, Blandford, RD, Bloom, ED, Bogart, JR, Bonino, R, Bottacini, E, Bregeon, J, Britto, RJ, Bruel, P, Buehler, R, Burnett, TH, Buson, S, Caliandro, GA, Cameron, RA, Caputo, R, Caragiulo, M, Caraveo, PA, Casandjian, JM, Cavazzuti, E, Charles, E, Chaves, RCG, Chekhtman, A, Cheung, CC, Chiang, J, Chiaro, G, Ciprini, S, Claus, R, Cohen-Tanugi, J, Cominsky, LR, Conrad, J, Cutini, S, D'Ammando, F, Angelis, AD, Deklotz, M, Palma, FD, Desiante, R, Digel, SW, Venere, LD, Drell, PS, Dubois, R, Dumora, D, Favuzzi, C, Fegan, SJ, Ferrara, EC, Finke, J, Franckowiak, A, Fukazawa, Y, Funk, S, Fusco, P, Gargano, F, Gasparrini, D, Giebels, B, Giglietto, N, Giommi, P, Giordano, F, Giroletti, M, Glanzman, T, Godfrey, G, Grenier, IA, Grondin, MH, Grove, JE, Guillemot, L, Guiriec, S, Hadasch, D, Harding, AK, Hays, E, Hewitt, JW, Hill, AB, Horan, D, Iafrate, G, Jogler, T, Jóhannesson, G, Johnson, RP, Johnson, AS, Johnson, TJ, Johnson, WN, Kamae, T, Kataoka, J, Katsuta, J, Kuss, M, Mura, GL, Landriu, D, Larsson, S, Latronico, L, Lemoine-Goumard, M, Li, J, Li, L, Longo, F, Loparco, F, Lott, B, Lovellette, MN, Lubrano, P, Madejski, GM, Massaro, F, Mayer, M, Mazziotta, MN, McEnery, JE, Michelson, PF, Mirabal, N, Mizuno, T, Moiseev, AA, Mongelli, M, Monzani, ME, Morselli, A, Moskalenko, IV, Murgia, S, Nuss, E, Ohno, M, Ohsugi, T, Omodei, N, Orienti, M, Orlando, E, Ormes, JF, Paneque, D, Panetta, JH, Perkins, JS, Pesce-Rollins, M, Piron, F, Pivato, G, Porter, TA, Racusin, JL, Rando, R, Razzano, M, Razzaque, S, Reimer, A, Reimer, O, Reposeur, T, Rochester, LS, Romani, RW, Salvetti, D, Sánchez-Conde, M, Parkinson, PMS, Schulz, A, Siskind, EJ, Smith, DA, Spada, F, Spandre, G, Spinelli, P, Stephens, TE, Strong, AW, Suson, DJ, Takahashi, H, Takahashi, T, Tanaka, Y, Thayer, JG, Thayer, JB, Thompson, DJ, Tibaldo, L, Tibolla, O, Torres, DF, Torresi, E, Tosti, G, Troja, E, Klaveren, BV, Vianello, G, Winer, BL, Wood, KS, Wood, M & Zimmer, S 2015, 'FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG', Astrophysical Journal, Supplement Series, vol. 218, no. 2, 23. https://doi.org/10.1088/0067-0049/218/2/23

@article{778503b2dad54bc9839279ded26ca961,

title = "FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG",

abstract = "We present the third Fermi Large Area Telescope (LAT) source catalog (3FGL) of sources in the 100 MeV-300 GeV range. Based on the first 4 yr of science data from the Fermi Gamma-ray Space Telescope mission, it is the deepest yet in this energy range. Relative to the Second Fermi LAT catalog, the 3FGL catalog incorporates twice as much data, as well as a number of analysis improvements, including improved calibrations at the event reconstruction level, an updated model for Galactic diffuse γ-ray emission, a refined procedure for source detection, and improved methods for associating LAT sources with potential counterparts at other wavelengths. The 3FGL catalog includes 3033 sources above significance, with source location regions, spectral properties, and monthly light curves for each. Of these, 78 are flagged as potentially being due to imperfections in the model for Galactic diffuse emission. Twenty-five sources are modeled explicitly as spatially extended, and overall 238 sources are considered as identified based on angular extent or correlated variability (periodic or otherwise) observed at other wavelengths. For 1010 sources we have not found plausible counterparts at other wavelengths. More than 1100 of the identified or associated sources are active galaxies of the blazar class; several other classes of non-blazar active galaxies are also represented in the 3FGL. Pulsars represent the largest Galactic source class. From source counts of Galactic sources we estimate that the contribution of unresolved sources to the Galactic diffuse emission is ∼3% at 1 GeV.",

keywords = "catalogs, gamma-rays: general",

author = "F. Acero and M. Ackermann and M. Ajello and A. Albert and Atwood, {W. B.} and M. Axelsson and L. Baldini and J. Ballet and G. Barbiellini and D. Bastieri and A. Belfiore and R. Bellazzini and E. Bissaldi and Blandford, {R. D.} and Bloom, {E. D.} and Bogart, {J. R.} and R. Bonino and E. Bottacini and J. Bregeon and Britto, {R. J.} and P. Bruel and R. Buehler and Burnett, {T. H.} and S. Buson and Caliandro, {G. A.} and Cameron, {R. A.} and R. Caputo and M. Caragiulo and Caraveo, {P. A.} and Casandjian, {J. M.} and E. Cavazzuti and E. Charles and Chaves, {R. C.G.} and A. Chekhtman and Cheung, {C. C.} and J. Chiang and G. Chiaro and S. Ciprini and R. Claus and J. Cohen-Tanugi and Cominsky, {L. R.} and J. Conrad and S. Cutini and F. D'Ammando and Angelis, {A. De} and M. Deklotz and Palma, {F. De} and R. Desiante and Digel, {S. W.} and Venere, {L. Di} and Drell, {P. S.} and R. Dubois and D. Dumora and C. Favuzzi and Fegan, {S. J.} and Ferrara, {E. C.} and J. Finke and A. Franckowiak and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and D. Gasparrini and B. Giebels and N. Giglietto and P. Giommi and F. Giordano and M. Giroletti and T. Glanzman and G. Godfrey and Grenier, {I. A.} and Grondin, {M. H.} and Grove, {J. E.} and L. Guillemot and S. Guiriec and D. Hadasch and Harding, {A. K.} and E. Hays and Hewitt, {J. W.} and Hill, {A. B.} and D. Horan and G. Iafrate and T. Jogler and G. J{\'o}hannesson and Johnson, {R. P.} and Johnson, {A. S.} and Johnson, {T. J.} and Johnson, {W. N.} and T. Kamae and J. Kataoka and J. Katsuta and M. Kuss and Mura, {G. La} and D. Landriu and S. Larsson and L. Latronico and M. Lemoine-Goumard and J. Li and L. Li and F. Longo and F. Loparco and B. Lott and Lovellette, {M. N.} and P. Lubrano and Madejski, {G. M.} and F. Massaro and M. Mayer and Mazziotta, {M. N.} and McEnery, {J. E.} and Michelson, {P. F.} and N. Mirabal and T. Mizuno and Moiseev, {A. A.} and M. Mongelli and Monzani, {M. E.} and A. Morselli and Moskalenko, {I. V.} and S. Murgia and E. Nuss and M. Ohno and T. Ohsugi and N. Omodei and M. Orienti and E. Orlando and Ormes, {J. F.} and D. Paneque and Panetta, {J. H.} and Perkins, {J. S.} and M. Pesce-Rollins and F. Piron and G. Pivato and Porter, {T. A.} and Racusin, {J. L.} and R. Rando and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and T. Reposeur and Rochester, {L. S.} and Romani, {R. W.} and D. Salvetti and M. S{\'a}nchez-Conde and Parkinson, {P. M.Saz} and A. Schulz and Siskind, {E. J.} and Smith, {D. A.} and F. Spada and G. Spandre and P. Spinelli and Stephens, {T. E.} and Strong, {A. W.} and Suson, {D. J.} and H. Takahashi and T. Takahashi and Y. Tanaka and Thayer, {J. G.} and Thayer, {J. B.} and Thompson, {D. J.} and L. Tibaldo and O. Tibolla and Torres, {D. F.} and E. Torresi and G. Tosti and E. Troja and Klaveren, {B. Van} and G. Vianello and Winer, {B. L.} and Wood, {K. S.} and M. Wood and S. Zimmer",

year = "2015",

month = jun,

day = "22",

doi = "10.1088/0067-0049/218/2/23",

language = "English",

volume = "218",

journal = "Astrophysical Journal, Supplement Series",

issn = "0067-0049",

publisher = "IOP Publishing Ltd.",

number = "2",

}

TY - JOUR

T1 - FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG

AU - Acero, F.

AU - Ackermann, M.

AU - Ajello, M.

AU - Albert, A.

AU - Atwood, W. B.

AU - Axelsson, M.

AU - Baldini, L.

AU - Ballet, J.

AU - Barbiellini, G.

AU - Bastieri, D.

AU - Belfiore, A.

AU - Bellazzini, R.

AU - Bissaldi, E.

AU - Blandford, R. D.

AU - Bloom, E. D.

AU - Bogart, J. R.

AU - Bonino, R.

AU - Bottacini, E.

AU - Bregeon, J.

AU - Britto, R. J.

AU - Bruel, P.

AU - Buehler, R.

AU - Burnett, T. H.

AU - Buson, S.

AU - Caliandro, G. A.

AU - Cameron, R. A.

AU - Caputo, R.

AU - Caragiulo, M.

AU - Caraveo, P. A.

AU - Casandjian, J. M.

AU - Cavazzuti, E.

AU - Charles, E.

AU - Chaves, R. C.G.

AU - Chekhtman, A.

AU - Cheung, C. C.

AU - Chiang, J.

AU - Chiaro, G.

AU - Ciprini, S.

AU - Claus, R.

AU - Cohen-Tanugi, J.

AU - Cominsky, L. R.

AU - Conrad, J.

AU - Cutini, S.

AU - D'Ammando, F.

AU - Angelis, A. De

AU - Deklotz, M.

AU - Palma, F. De

AU - Desiante, R.

AU - Digel, S. W.

AU - Venere, L. Di

AU - Drell, P. S.

AU - Dubois, R.

AU - Dumora, D.

AU - Favuzzi, C.

AU - Fegan, S. J.

AU - Ferrara, E. C.

AU - Finke, J.

AU - Franckowiak, A.

AU - Fukazawa, Y.

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Gasparrini, D.

AU - Giebels, B.

AU - Giglietto, N.

AU - Giommi, P.

AU - Giordano, F.

AU - Giroletti, M.

AU - Glanzman, T.

AU - Godfrey, G.

AU - Grenier, I. A.

AU - Grondin, M. H.

AU - Grove, J. E.

AU - Guillemot, L.

AU - Guiriec, S.

AU - Hadasch, D.

AU - Harding, A. K.

AU - Hays, E.

AU - Hewitt, J. W.

AU - Hill, A. B.

AU - Horan, D.

AU - Iafrate, G.

AU - Jogler, T.

AU - Jóhannesson, G.

AU - Johnson, R. P.

AU - Johnson, A. S.

AU - Johnson, T. J.

AU - Johnson, W. N.

AU - Kamae, T.

AU - Kataoka, J.

AU - Katsuta, J.

AU - Kuss, M.

AU - Mura, G. La

AU - Landriu, D.

AU - Larsson, S.

AU - Latronico, L.

AU - Lemoine-Goumard, M.

AU - Li, J.

AU - Li, L.

AU - Longo, F.

AU - Loparco, F.

AU - Lott, B.

AU - Lovellette, M. N.

AU - Lubrano, P.

AU - Madejski, G. M.

AU - Massaro, F.

AU - Mayer, M.

AU - Mazziotta, M. N.

AU - McEnery, J. E.

AU - Michelson, P. F.

AU - Mirabal, N.

AU - Mizuno, T.

AU - Moiseev, A. A.

AU - Mongelli, M.

AU - Monzani, M. E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Murgia, S.

AU - Nuss, E.

AU - Ohno, M.

AU - Ohsugi, T.

AU - Omodei, N.

AU - Orienti, M.

AU - Orlando, E.

AU - Ormes, J. F.

AU - Paneque, D.

AU - Panetta, J. H.

AU - Perkins, J. S.

AU - Pesce-Rollins, M.

AU - Piron, F.

AU - Pivato, G.

AU - Porter, T. A.

AU - Racusin, J. L.

AU - Rando, R.

AU - Razzano, M.

AU - Razzaque, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Reposeur, T.

AU - Rochester, L. S.

AU - Romani, R. W.

AU - Salvetti, D.

AU - Sánchez-Conde, M.

AU - Parkinson, P. M.Saz

AU - Schulz, A.

AU - Siskind, E. J.

AU - Smith, D. A.

AU - Spada, F.

AU - Spandre, G.

AU - Spinelli, P.

AU - Stephens, T. E.

AU - Strong, A. W.

AU - Suson, D. J.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Tanaka, Y.

AU - Thayer, J. G.

AU - Thayer, J. B.

AU - Thompson, D. J.

AU - Tibaldo, L.

AU - Tibolla, O.

AU - Torres, D. F.

AU - Torresi, E.

AU - Tosti, G.

AU - Troja, E.

AU - Klaveren, B. Van

AU - Vianello, G.

AU - Winer, B. L.

AU - Wood, K. S.

AU - Wood, M.

AU - Zimmer, S.

PY - 2015/6/22

Y1 - 2015/6/22

N2 - We present the third Fermi Large Area Telescope (LAT) source catalog (3FGL) of sources in the 100 MeV-300 GeV range. Based on the first 4 yr of science data from the Fermi Gamma-ray Space Telescope mission, it is the deepest yet in this energy range. Relative to the Second Fermi LAT catalog, the 3FGL catalog incorporates twice as much data, as well as a number of analysis improvements, including improved calibrations at the event reconstruction level, an updated model for Galactic diffuse γ-ray emission, a refined procedure for source detection, and improved methods for associating LAT sources with potential counterparts at other wavelengths. The 3FGL catalog includes 3033 sources above significance, with source location regions, spectral properties, and monthly light curves for each. Of these, 78 are flagged as potentially being due to imperfections in the model for Galactic diffuse emission. Twenty-five sources are modeled explicitly as spatially extended, and overall 238 sources are considered as identified based on angular extent or correlated variability (periodic or otherwise) observed at other wavelengths. For 1010 sources we have not found plausible counterparts at other wavelengths. More than 1100 of the identified or associated sources are active galaxies of the blazar class; several other classes of non-blazar active galaxies are also represented in the 3FGL. Pulsars represent the largest Galactic source class. From source counts of Galactic sources we estimate that the contribution of unresolved sources to the Galactic diffuse emission is ∼3% at 1 GeV.

AB - We present the third Fermi Large Area Telescope (LAT) source catalog (3FGL) of sources in the 100 MeV-300 GeV range. Based on the first 4 yr of science data from the Fermi Gamma-ray Space Telescope mission, it is the deepest yet in this energy range. Relative to the Second Fermi LAT catalog, the 3FGL catalog incorporates twice as much data, as well as a number of analysis improvements, including improved calibrations at the event reconstruction level, an updated model for Galactic diffuse γ-ray emission, a refined procedure for source detection, and improved methods for associating LAT sources with potential counterparts at other wavelengths. The 3FGL catalog includes 3033 sources above significance, with source location regions, spectral properties, and monthly light curves for each. Of these, 78 are flagged as potentially being due to imperfections in the model for Galactic diffuse emission. Twenty-five sources are modeled explicitly as spatially extended, and overall 238 sources are considered as identified based on angular extent or correlated variability (periodic or otherwise) observed at other wavelengths. For 1010 sources we have not found plausible counterparts at other wavelengths. More than 1100 of the identified or associated sources are active galaxies of the blazar class; several other classes of non-blazar active galaxies are also represented in the 3FGL. Pulsars represent the largest Galactic source class. From source counts of Galactic sources we estimate that the contribution of unresolved sources to the Galactic diffuse emission is ∼3% at 1 GeV.

KW - catalogs

KW - gamma-rays: general

UR - http://www.scopus.com/inward/record.url?scp=84933567682&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84933567682&partnerID=8YFLogxK

U2 - 10.1088/0067-0049/218/2/23

DO - 10.1088/0067-0049/218/2/23

M3 - Article

AN - SCOPUS:84933567682

SN - 0067-0049

VL - 218

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

IS - 2

M1 - 23

ER -

FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG

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