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The fermi -lat high-latitude survey: source count distributions and the origin of the extragalactic diffuse background

This is the first of a series of papers aimed at characterizing the populations detected in the high-latitude sky of the Fermi -LAT survey. In this work, we focus on the intrinsic spectral and flux properties of the source sample. We show that when selection effects are properly taken into account,... Full description

Journal Title: The Astrophysical Journal 2010, Vol.720(1), pp.435-453
Main Author: Abdo, A. A.
Other Authors: Ackermann, M. , Ajello, M. , Antolini, E. , Baldini, L. , Ballet, J. , Barbiellini, G. , Bastieri, D. , Baughman, B. M. , Bechtol, K. , Bellazzini, R. , Berenji, B. , Blandford, R. D. , Bloom, E. D. , Bonamente, E. , Borgland, A. W. , Bouvier, A. , Bregeon, J. , Brez, A. , Brigida, M. , Bruel, P. , Burnett, T. H. , Buson, S. , Caliandro, G. A. , Cameron, R. A. , Caraveo, P. A. , Carrigan, S. , Casandjian, J. M. , Cavazzuti, E. , Cecchi, C. , Çelik, Ö. , Charles, E. , Chekhtman, A. , Cheung, C. C. , Chiang, J. , Ciprini, S. , Claus, R. , Cohen-Tanugi, J. , Conrad, J. , Costamante, L. , Cutini, S. , Dermer, C. D. , De Angelis, A. , 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. , Fukazawa, Y. , Funk, S. , Fusco, P. , Gargano, F. , Gasparrini, D. , Gehrels, N. , Germani, S. , Giglietto, N. , Giommi, P. , Giordano, F. , Glanzman, T. , Godfrey, G. , Grenier, I. A. , Grove, J. E. , Guiriec, S. , Hadasch, D. , Hayashida, M. , Hays, E. , Healey, S. E. , Horan, D. , Hughes, R. E. , Itoh, R. , Jóhannesson, G. , Johnson, A. S. , Johnson, T. J. , Johnson, W. N. , Kamae, T. , Katagiri, H. , Kataoka, J. , Kawai, N. , Knödlseder, J. , Kuss, M. , Lande, J. , Latronico, L. , Lee, S.-H. , Lemoine-Goumard, M. , Garde, M. Llena , Longo, F. , Loparco, F. , Lott, B. , Lovellette, M. N. , Lubrano, P. , Madejski, G. M. , 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. , Ozaki, M. , Paneque, D. , Panetta, J. H. , Parent, D. , Pelassa, V. , Pepe, M. , Pesce-Rollins, M. , Piron, F. , Porter, T. A. , Rainò, S. , Rando, R. , Razzano, M. , Reimer, A. , Reimer, O. , Ritz, S. , Rochester, L. S. , Rodriguez, A. Y. , Romani, R. W. , Roth, M. , Sadrozinski, H. F.-W. , Sander, A. , Parkinson, P. M. Saz , Scargle, J. D. , Sgrò, C. , Shaw, M. S. , Smith, P. D. , Spandre, G. , Spinelli, P. , Starck, J.-L. , Strickman, M. S. , Strong, A. W. , Suson, D. J. , Tajima, H. , Takahashi, H. , Takahashi, T. , Tanaka, T. , Thayer, J. B. , Thayer, J. G. , Thompson, D. J. , Tibaldo, L. , 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. , Yang, Z. , Ylinen, T. , Ziegler, M.
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0004-637X ; E-ISSN: 1538-4357 ; DOI: 10.1088/0004-637X/720/1/435
Link: http://dx.doi.org/10.1088/0004-637X/720/1/435
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recordid: iop10.1088/0004-637X/720/1/435
title: The fermi -lat high-latitude survey: source count distributions and the origin of the extragalactic diffuse background
format: Article
creator:
  • Abdo, A. A.
  • Ackermann, M.
  • Ajello, M.
  • Antolini, E.
  • Baldini, L.
  • Ballet, J.
  • Barbiellini, G.
  • Bastieri, D.
  • Baughman, B. M.
  • Bechtol, K.
  • Bellazzini, R.
  • Berenji, B.
  • Blandford, R. D.
  • Bloom, E. D.
  • Bonamente, E.
  • Borgland, A. W.
  • Bouvier, A.
  • Bregeon, J.
  • Brez, A.
  • Brigida, M.
  • Bruel, P.
  • Burnett, T. H.
  • Buson, S.
  • Caliandro, G. A.
  • Cameron, R. A.
  • Caraveo, P. A.
  • Carrigan, S.
  • Casandjian, J. M.
  • Cavazzuti, E.
  • Cecchi, C.
  • Çelik, Ö.
  • Charles, E.
  • Chekhtman, A.
  • Cheung, C. C.
  • Chiang, J.
  • Ciprini, S.
  • Claus, R.
  • Cohen-Tanugi, J.
  • Conrad, J.
  • Costamante, L.
  • Cutini, S.
  • Dermer, C. D.
  • De Angelis, A.
  • 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.
  • Fukazawa, Y.
  • Funk, S.
  • Fusco, P.
  • Gargano, F.
  • Gasparrini, D.
  • Gehrels, N.
  • Germani, S.
  • Giglietto, N.
  • Giommi, P.
  • Giordano, F.
  • Glanzman, T.
  • Godfrey, G.
  • Grenier, I. A.
  • Grove, J. E.
  • Guiriec, S.
  • Hadasch, D.
  • Hayashida, M.
  • Hays, E.
  • Healey, S. E.
  • Horan, D.
  • Hughes, R. E.
  • Itoh, R.
  • Jóhannesson, G.
  • Johnson, A. S.
  • Johnson, T. J.
  • Johnson, W. N.
  • Kamae, T.
  • Katagiri, H.
  • Kataoka, J.
  • Kawai, N.
  • Knödlseder, J.
  • Kuss, M.
  • Lande, J.
  • Latronico, L.
  • Lee, S.-H.
  • Lemoine-Goumard, M.
  • Garde, M. Llena
  • Longo, F.
  • Loparco, F.
  • Lott, B.
  • Lovellette, M. N.
  • Lubrano, P.
  • Madejski, G. M.
  • 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.
  • Ozaki, M.
  • Paneque, D.
  • Panetta, J. H.
  • Parent, D.
  • Pelassa, V.
  • Pepe, M.
  • Pesce-Rollins, M.
  • Piron, F.
  • Porter, T. A.
  • Rainò, S.
  • Rando, R.
  • Razzano, M.
  • Reimer, A.
  • Reimer, O.
  • Ritz, S.
  • Rochester, L. S.
  • Rodriguez, A. Y.
  • Romani, R. W.
  • Roth, M.
  • Sadrozinski, H. F.-W.
  • Sander, A.
  • Parkinson, P. M. Saz
  • Scargle, J. D.
  • Sgrò, C.
  • Shaw, M. S.
  • Smith, P. D.
  • Spandre, G.
  • Spinelli, P.
  • Starck, J.-L.
  • Strickman, M. S.
  • Strong, A. W.
  • Suson, D. J.
  • Tajima, H.
  • Takahashi, H.
  • Takahashi, T.
  • Tanaka, T.
  • Thayer, J. B.
  • Thayer, J. G.
  • Thompson, D. J.
  • Tibaldo, L.
  • 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.
  • Yang, Z.
  • Ylinen, T.
  • Ziegler, M.
subjects:
  • Astrophysics - Cosmology And Extragalactic Astrophysics
  • Astrophysics - High Energy Astrophysical Phenomena
ispartof: The Astrophysical Journal, 2010, Vol.720(1), pp.435-453
description: This is the first of a series of papers aimed at characterizing the populations detected in the high-latitude sky of the Fermi -LAT survey. In this work, we focus on the intrinsic spectral and flux properties of the source sample. We show that when selection effects are properly taken into account, Fermi sources are on average steeper than previously found (e.g., in the bright source list) with an average photon index of 2.40 ± 0.02 over the entire 0.1-100 GeV energy band. We confirm that flat spectrum radio quasars have steeper spectra than BL Lacertae objects with an average index of 2.48 ± 0.02 versus 2.18 ± 0.02. Using several methods, we build the deepest source count distribution at GeV energies, deriving that the intrinsic source (i.e., blazar) surface density at F 100 10 9  ph cm 2  s 1 is 0.12 +0.03 0.02  deg 2 . The integration of the source count distribution yields that point sources contribute 16(±1.8)% (±7% systematic uncertainty) of the GeV isotropic diffuse background. At the fluxes currently reached by LAT, we can rule out the hypothesis that pointlike sources (i.e., blazars) produce a larger fraction of the diffuse emission.
language: eng
source:
identifier: ISSN: 0004-637X ; E-ISSN: 1538-4357 ; DOI: 10.1088/0004-637X/720/1/435
fulltext: fulltext
issn:
  • 0004-637X
  • 1538-4357
  • 0004637X
  • 15384357
url: Link


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titleThe fermi -lat high-latitude survey: source count distributions and the origin of the extragalactic diffuse background
creatorAbdo, A. A. ; Ackermann, M. ; Ajello, M. ; Antolini, E. ; Baldini, L. ; Ballet, J. ; Barbiellini, G. ; Bastieri, D. ; Baughman, B. M. ; Bechtol, K. ; Bellazzini, R. ; Berenji, B. ; Blandford, R. D. ; Bloom, E. D. ; Bonamente, E. ; Borgland, A. W. ; Bouvier, A. ; Bregeon, J. ; Brez, A. ; Brigida, M. ; Bruel, P. ; Burnett, T. H. ; Buson, S. ; Caliandro, G. A. ; Cameron, R. A. ; Caraveo, P. A. ; Carrigan, S. ; Casandjian, J. M. ; Cavazzuti, E. ; Cecchi, C. ; Çelik, Ö. ; Charles, E. ; Chekhtman, A. ; Cheung, C. C. ; Chiang, J. ; Ciprini, S. ; Claus, R. ; Cohen-Tanugi, J. ; Conrad, J. ; Costamante, L. ; Cutini, S. ; Dermer, C. D. ; De Angelis, A. ; 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. ; Fukazawa, Y. ; Funk, S. ; Fusco, P. ; Gargano, F. ; Gasparrini, D. ; Gehrels, N. ; Germani, S. ; Giglietto, N. ; Giommi, P. ; Giordano, F. ; Glanzman, T. ; Godfrey, G. ; Grenier, I. A. ; Grove, J. E. ; Guiriec, S. ; Hadasch, D. ; Hayashida, M. ; Hays, E. ; Healey, S. E. ; Horan, D. ; Hughes, R. E. ; Itoh, R. ; Jóhannesson, G. ; Johnson, A. S. ; Johnson, T. J. ; Johnson, W. N. ; Kamae, T. ; Katagiri, H. ; Kataoka, J. ; Kawai, N. ; Knödlseder, J. ; Kuss, M. ; Lande, J. ; Latronico, L. ; Lee, S.-H. ; Lemoine-Goumard, M. ; Garde, M. Llena ; Longo, F. ; Loparco, F. ; Lott, B. ; Lovellette, M. N. ; Lubrano, P. ; Madejski, G. M. ; 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. ; Ozaki, M. ; Paneque, D. ; Panetta, J. H. ; Parent, D. ; Pelassa, V. ; Pepe, M. ; Pesce-Rollins, M. ; Piron, F. ; Porter, T. A. ; Rainò, S. ; Rando, R. ; Razzano, M. ; Reimer, A. ; Reimer, O. ; Ritz, S. ; Rochester, L. S. ; Rodriguez, A. Y. ; Romani, R. W. ; Roth, M. ; Sadrozinski, H. F.-W. ; Sander, A. ; Parkinson, P. M. Saz ; Scargle, J. D. ; Sgrò, C. ; Shaw, M. S. ; Smith, P. D. ; Spandre, G. ; Spinelli, P. ; Starck, J.-L. ; Strickman, M. S. ; Strong, A. W. ; Suson, D. J. ; Tajima, H. ; Takahashi, H. ; Takahashi, T. ; Tanaka, T. ; Thayer, J. B. ; Thayer, J. G. ; Thompson, D. J. ; Tibaldo, L. ; 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. ; Yang, Z. ; Ylinen, T. ; Ziegler, M.
ispartofThe Astrophysical Journal, 2010, Vol.720(1), pp.435-453
identifier
descriptionThis is the first of a series of papers aimed at characterizing the populations detected in the high-latitude sky of the Fermi -LAT survey. In this work, we focus on the intrinsic spectral and flux properties of the source sample. We show that when selection effects are properly taken into account, Fermi sources are on average steeper than previously found (e.g., in the bright source list) with an average photon index of 2.40 ± 0.02 over the entire 0.1-100 GeV energy band. We confirm that flat spectrum radio quasars have steeper spectra than BL Lacertae objects with an average index of 2.48 ± 0.02 versus 2.18 ± 0.02. Using several methods, we build the deepest source count distribution at GeV energies, deriving that the intrinsic source (i.e., blazar) surface density at F 100 10 9  ph cm 2  s 1 is 0.12 +0.03 0.02  deg 2 . The integration of the source count distribution yields that point sources contribute 16(±1.8)% (±7% systematic uncertainty) of the GeV isotropic diffuse background. At the fluxes currently reached by LAT, we can rule out the hypothesis that pointlike sources (i.e., blazars) produce a larger fraction of the diffuse emission.
languageeng
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subjectAstrophysics - Cosmology And Extragalactic Astrophysics ; Astrophysics - High Energy Astrophysical Phenomena;
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0Abdo, A. A.
1Ackermann, M.
2Ajello, M.
3Antolini, E.
4Baldini, L.
5Ballet, J.
6Barbiellini, G.
7Bastieri, D.
8Baughman, B. M.
9Bechtol, K.
10Bellazzini, R.
11Berenji, B.
12Blandford, R. D.
13Bloom, E. D.
14Bonamente, E.
15Borgland, A. W.
16Bouvier, A.
17Bregeon, J.
18Brez, A.
19Brigida, M.
20Bruel, P.
21Burnett, T. H.
22Buson, S.
23Caliandro, G. A.
24Cameron, R. A.
25Caraveo, P. A.
26Carrigan, S.
27Casandjian, J. M.
28Cavazzuti, E.
29Cecchi, C.
30Çelik, Ö.
31Charles, E.
32Chekhtman, A.
33Cheung, C. C.
34Chiang, J.
35Ciprini, S.
36Claus, R.
37Cohen-Tanugi, J.
38Conrad, J.
39Costamante, L.
40Cutini, S.
41Dermer, C. D.
42De Angelis, A.
43De Palma, F.
44Do Couto E Silva, E.
45Drell, P. S.
46Dubois, R.
47Dumora, D.
48Farnier, C.
49Favuzzi, C.
50Fegan, S. J.
51Focke, W. B.
52Fukazawa, Y.
53Funk, S.
54Fusco, P.
55Gargano, F.
56Gasparrini, D.
57Gehrels, N.
58Germani, S.
59Giglietto, N.
60Giommi, P.
61Giordano, F.
62Glanzman, T.
63Godfrey, G.
64Grenier, I. A.
65Grove, J. E.
66Guiriec, S.
67Hadasch, D.
68Hayashida, M.
69Hays, E.
70Healey, S. E.
71Horan, D.
72Hughes, R. E.
73Itoh, R.
74Jóhannesson, G.
75Johnson, A. S.
76Johnson, T. J.
77Johnson, W. N.
78Kamae, T.
79Katagiri, H.
80Kataoka, J.
81Kawai, N.
82Knödlseder, J.
83Kuss, M.
84Lande, J.
85Latronico, L.
86Lee, S.-H.
87Lemoine-Goumard, M.
88Garde, M. Llena
89Longo, F.
90Loparco, F.
91Lott, B.
92Lovellette, M. N.
93Lubrano, P.
94Madejski, G. M.
95Makeev, A.
96Mazziotta, M. N.
97Mcconville, W.
98Mcenery, J. E.
99Meurer, C.
100...
title
0THE FERMI -LAT HIGH-LATITUDE SURVEY: SOURCE COUNT DISTRIBUTIONS AND THE ORIGIN OF THE EXTRAGALACTIC DIFFUSE BACKGROUND
1THE FERMI HIGH-LATITUDE SURVEY
2The Fermi -LAT High-Latitude Survey: Source Count Distributions and the Origin of the Extragalactic Diffuse Background
descriptionThis is the first of a series of papers aimed at characterizing the populations detected in the high-latitude sky of the Fermi -LAT survey. In this work, we focus on the intrinsic spectral and flux properties of the source sample. We show that when selection effects are properly taken into account, Fermi sources are on average steeper than previously found (e.g., in the bright source list) with an average photon index of 2.40 ± 0.02 over the entire 0.1-100 GeV energy band. We confirm that flat spectrum radio quasars have steeper spectra than BL Lacertae objects with an average index of 2.48 ± 0.02 versus 2.18 ± 0.02. Using several methods, we build the deepest source count distribution at GeV energies, deriving that the intrinsic source (i.e., blazar) surface density at F 100 10 9  ph cm 2  s 1 is 0.12 +0.03 0.02  deg 2 . The integration of the source count distribution yields that point sources contribute 16(±1.8)% (±7% systematic uncertainty) of the GeV isotropic diffuse background. At the fluxes currently reached by LAT, we can rule out the hypothesis that pointlike sources (i.e., blazars) produce a larger fraction of the diffuse emission.
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2IOPscience (IOP Publishing)
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titleThe fermi -lat high-latitude survey: source count distributions and the origin of the extragalactic diffuse background
creationdate20100901
authorAbdo, A. A. ; Ackermann, M. ; Ajello, M. ; Antolini, E. ; Baldini, L. ; Ballet, J. ; Barbiellini, G. ; Bastieri, D. ; Baughman, B. M. ; Bechtol, K. ; Bellazzini, R. ; Berenji, B. ; Blandford, R. D. ; Bloom, E. D. ; Bonamente, E. ; Borgland, A. W. ; Bouvier, A. ; Bregeon, J. ; Brez, A. ; Brigida, M. ; Bruel, P. ; Burnett, T. H. ; Buson, S. ; Caliandro, G. A. ; Cameron, R. A. ; Caraveo, P. A. ; Carrigan, S. ; Casandjian, J. M. ; Cavazzuti, E. ; Cecchi, C. ; Çelik, Ö. ; Charles, E. ; Chekhtman, A. ; Cheung, C. C. ; Chiang, J. ; Ciprini, S. ; Claus, R. ; Cohen-Tanugi, J. ; Conrad, J. ; Costamante, L. ; Cutini, S. ; Dermer, C. D. ; De Angelis, A. ; 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. ; Fukazawa, Y. ; Funk, S. ; Fusco, P. ; Gargano, F. ; Gasparrini, D. ; Gehrels, N. ; Germani, S. ; Giglietto, N. ; Giommi, P. ; Giordano, F. ; Glanzman, T. ; Godfrey, G. ; Grenier, I. A. ; Grove, J. E. ; Guiriec, S. ; Hadasch, D. ; Hayashida, M. ; Hays, E. ; Healey, S. E. ; Horan, D. ; Hughes, R. E. ; Itoh, R. ; Jóhannesson, G. ; Johnson, A. S. ; Johnson, T. J. ; Johnson, W. N. ; Kamae, T. ; Katagiri, H. ; Kataoka, J. ; Kawai, N. ; Knödlseder, J. ; Kuss, M. ; Lande, J. ; Latronico, L. ; Lee, S.-H. ; Lemoine-Goumard, M. ; Garde, M. Llena ; Longo, F. ; Loparco, F. ; Lott, B. ; Lovellette, M. N. ; Lubrano, P. ; Madejski, G. M. ; 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. ; Ozaki, M. ; Paneque, D. ; Panetta, J. H. ; Parent, D. ; Pelassa, V. ; Pepe, M. ; Pesce-Rollins, M. ; Piron, F. ; Porter, T. A. ; Rainò, S. ; Rando, R. ; Razzano, M. ; Reimer, A. ; Reimer, O. ; Ritz, S. ; Rochester, L. S. ; Rodriguez, A. Y. ; Romani, R. W. ; Roth, M. ; Sadrozinski, H. F.-W. ; Sander, A. ; Parkinson, P. M. Saz ; Scargle, J. D. ; Sgrò, C. ; Shaw, M. S. ; Smith, P. D. ; Spandre, G. ; Spinelli, P. ; Starck, J.-L. ; Strickman, M. S. ; Strong, A. W. ; Suson, D. J. ; Tajima, H. ; Takahashi, H. ; Takahashi, T. ; Tanaka, T. ; Thayer, J. B. ; Thayer, J. G. ; Thompson, D. J. ; Tibaldo, L. ; 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. ; Yang, Z. ; Ylinen, T. ; Ziegler, M.
facets
frbrgroupid8865603953533054502
frbrtype5
languageeng
creationdate2010
collectionIOPscience (Institute of Physics)
prefilterarticles
rsrctypearticles
creatorcontrib
0Abdo, A. A.
1Ackermann, M.
2Ajello, M.
3Antolini, E.
4Baldini, L.
5Ballet, J.
6Barbiellini, G.
7Bastieri, D.
8Baughman, B. M.
9Bechtol, K.
10Bellazzini, R.
11Berenji, B.
12Blandford, R. D.
13Bloom, E. D.
14Bonamente, E.
15Borgland, A. W.
16Bouvier, A.
17Bregeon, J.
18Brez, A.
19Brigida, M.
20Bruel, P.
21Burnett, T. H.
22Buson, S.
23Caliandro, G. A.
24Cameron, R. A.
25Caraveo, P. A.
26Carrigan, S.
27Casandjian, J. M.
28Cavazzuti, E.
29Cecchi, C.
30Çelik, Ö.
31Charles, E.
32Chekhtman, A.
33Cheung, C. C.
34Chiang, J.
35Ciprini, S.
36Claus, R.
37Cohen-Tanugi, J.
38Conrad, J.
39Costamante, L.
40Cutini, S.
41Dermer, C. D.
42De Angelis, A.
43De Palma, F.
44Do Couto E Silva, E.
45Drell, P. S.
46Dubois, R.
47Dumora, D.
48Farnier, C.
49Favuzzi, C.
50Fegan, S. J.
51Focke, W. B.
52Fukazawa, Y.
53Funk, S.
54Fusco, P.
55Gargano, F.
56Gasparrini, D.
57Gehrels, N.
58Germani, S.
59Giglietto, N.
60Giommi, P.
61Giordano, F.
62Glanzman, T.
63Godfrey, G.
64Grenier, I. A.
65Grove, J. E.
66Guiriec, S.
67Hadasch, D.
68Hayashida, M.
69Hays, E.
70Healey, S. E.
71Horan, D.
72Hughes, R. E.
73Itoh, R.
74Jóhannesson, G.
75Johnson, A. S.
76Johnson, T. J.
77Johnson, W. N.
78Kamae, T.
79Katagiri, H.
80Kataoka, J.
81Kawai, N.
82Knödlseder, J.
83Kuss, M.
84Lande, J.
85Latronico, L.
86Lee, S.-H.
87Lemoine-Goumard, M.
88Garde, M. Llena
89Longo, F.
90Loparco, F.
91Lott, B.
92Lovellette, M. N.
93Lubrano, P.
94Madejski, G. M.
95Makeev, A.
96Mazziotta, M. N.
97Mcconville, W.
98Mcenery, J. E.
99Meurer, C.
100...
jtitleAstrophysical Journal
toplevelpeer_reviewed
delivery
delcategoryRemote Search Resource
fulltextfulltext
addata
aulast
0Abdo
1Ackermann
2Ajello
3Antolini
4Baldini
5Ballet
6Barbiellini
7Bastieri
8Baughman
9Bechtol
10Bellazzini
11Berenji
12Blandford
13Bloom
14Bonamente
15Borgland
16Bouvier
17Bregeon
18Brez
19Brigida
20Bruel
21Burnett
22Buson
23Caliandro
24Cameron
25Caraveo
26Carrigan
27Casandjian
28Cavazzuti
29Cecchi
30Çelik
31Charles
32Chekhtman
33Cheung
34Chiang
35Ciprini
36Claus
37Cohen-Tanugi
38Conrad
39Costamante
40Cutini
41Dermer
42de Angelis
43de Palma
44do Couto e Silva
45Drell
46Dubois
47Dumora
48Farnier
49Favuzzi
50Fegan
51Focke
52Fukazawa
53Funk
54Fusco
55Gargano
56Gasparrini
57Gehrels
58Germani
59Giglietto
60Giommi
61Giordano
62Glanzman
63Godfrey
64Grenier
65Grove
66Guiriec
67Hadasch
68Hayashida
69Hays
70Healey
71Horan
72Hughes
73Itoh
74Jóhannesson
75Johnson
76Kamae
77Katagiri
78Kataoka
79Kawai
80Knödlseder
81Kuss
82Lande
83Latronico
84Lee
85Lemoine-Goumard
86Garde
87Longo
88Loparco
89Lott
90Lovellette
91Lubrano
92Madejski
93Makeev
94Mazziotta
95McConville
96McEnery
97Meurer
98Michelson
99Mitthumsiri
100...
aufirst
0A. A.
1M.
2E.
3L.
4J.
5G.
6D.
7B. M.
8K.
9R.
10B.
11R. D.
12E. D.
13A. W.
14A.
15P.
16T. H.
17S.
18G. A.
19R. A.
20P. A.
21J. M.
22C.
23Ö.
24C. C.
25C. D.
26F.
27P. S.
28S. J.
29W. B.
30Y.
31N.
32T.
33I. A.
34J. E.
35S. E.
36R. E.
37A. S.
38T. J.
39W. N.
40H.
41S.-H.
42M. Llena
43M. N.
44G. M.
45W.
46P. F.
47M. E.
48I. V.
49P. L.
50J. P.
51J. F.
52J. H.
53V.
54T. A.
55O.
56L. S.
57A. Y.
58R. W.
59H. F.-W.
60P. M. Saz
61J. D.
62M. S.
63P. D.
64J.-L.
65D. J.
66J. B.
67J. G.
68D. F.
69T. L.
70A. P.
71B. L.
72K. S.
73Z.
au
0Abdo, A. A.
1Ackermann, M.
2Ajello, M.
3Antolini, E.
4Baldini, L.
5Ballet, J.
6Barbiellini, G.
7Bastieri, D.
8Baughman, B. M.
9Bechtol, K.
10Bellazzini, R.
11Berenji, B.
12Blandford, R. D.
13Bloom, E. D.
14Bonamente, E.
15Borgland, A. W.
16Bouvier, A.
17Bregeon, J.
18Brez, A.
19Brigida, M.
20Bruel, P.
21Burnett, T. H.
22Buson, S.
23Caliandro, G. A.
24Cameron, R. A.
25Caraveo, P. A.
26Carrigan, S.
27Casandjian, J. M.
28Cavazzuti, E.
29Cecchi, C.
30Çelik, Ö.
31Charles, E.
32Chekhtman, A.
33Cheung, C. C.
34Chiang, J.
35Ciprini, S.
36Claus, R.
37Cohen-Tanugi, J.
38Conrad, J.
39Costamante, L.
40Cutini, S.
41Dermer, C. D.
42de Angelis, A.
43de Palma, F.
44do Couto e Silva, E.
45Drell, P. S.
46Dubois, R.
47Dumora, D.
48Farnier, C.
49Favuzzi, C.
50Fegan, S. J.
51Focke, W. B.
52Fukazawa, Y.
53Funk, S.
54Fusco, P.
55Gargano, F.
56Gasparrini, D.
57Gehrels, N.
58Germani, S.
59Giglietto, N.
60Giommi, P.
61Giordano, F.
62Glanzman, T.
63Godfrey, G.
64Grenier, I. A.
65Grove, J. E.
66Guiriec, S.
67Hadasch, D.
68Hayashida, M.
69Hays, E.
70Healey, S. E.
71Horan, D.
72Hughes, R. E.
73Itoh, R.
74Jóhannesson, G.
75Johnson, A. S.
76Johnson, T. J.
77Johnson, W. N.
78Kamae, T.
79Katagiri, H.
80Kataoka, J.
81Kawai, N.
82Knödlseder, J.
83Kuss, M.
84Lande, J.
85Latronico, L.
86Lee, S.-H.
87Lemoine-Goumard, M.
88Garde, M. Llena
89Longo, F.
90Loparco, F.
91Lott, B.
92Lovellette, M. N.
93Lubrano, P.
94Madejski, G. M.
95Makeev, A.
96Mazziotta, M. N.
97McConville, W.
98McEnery, J. E.
99Meurer, C.
100...
atitleTHE FERMI -LAT HIGH-LATITUDE SURVEY: SOURCE COUNT DISTRIBUTIONS AND THE ORIGIN OF THE EXTRAGALACTIC DIFFUSE BACKGROUND
jtitleThe Astrophysical Journal
stitleTHE FERMI HIGH-LATITUDE SURVEY
risdate20100901
volume720
issue1
spage435
epage453
issn0004-637X
eissn1538-4357
formatjournal
genrearticle
ristypeJOUR
abstractThis is the first of a series of papers aimed at characterizing the populations detected in the high-latitude sky of the Fermi -LAT survey. In this work, we focus on the intrinsic spectral and flux properties of the source sample. We show that when selection effects are properly taken into account, Fermi sources are on average steeper than previously found (e.g., in the bright source list) with an average photon index of 2.40 ± 0.02 over the entire 0.1-100 GeV energy band. We confirm that flat spectrum radio quasars have steeper spectra than BL Lacertae objects with an average index of 2.48 ± 0.02 versus 2.18 ± 0.02. Using several methods, we build the deepest source count distribution at GeV energies, deriving that the intrinsic source (i.e., blazar) surface density at F 100 10 9  ph cm 2  s 1 is 0.12 +0.03 0.02  deg 2 . The integration of the source count distribution yields that point sources contribute 16(±1.8)% (±7% systematic uncertainty) of the GeV isotropic diffuse background. At the fluxes currently reached by LAT, we can rule out the hypothesis that pointlike sources (i.e., blazars) produce a larger fraction of the diffuse emission.
doi10.1088/0004-637X/720/1/435
orcidid0000-0002-0014-7809: 0000-0001-6885-7156
pages435-453
date2010-09-01