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Spectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data

We report on the first Fermi Large Area Telescope (LAT) measurements of the so-called "extragalactic" diffuse gamma-ray emission (EGB). This component of the diffuse gamma-ray emission is generally considered to have an isotropic or nearly isotropic distribution on the sky with diverse contributions... Full description

Journal Title: Physical review letters 12 March 2010, Vol.104(10), pp.101101
Main Author: Abdo, A A
Other Authors: Ackermann, M , Ajello, M , Atwood, W B , 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 , Bregeon, J , Brez, A , Brigida, M , Bruel, P , Burnett, T H , Buson, S , Caliandro, G A , Cameron, R A , Caraveo, P A , Casandjian, J M , Cavazzuti, E , Cecchi, C , Celik, O , Charles, E , Chekhtman, A , Cheung, C C , Chiang, J , Ciprini, S , Claus, R , Cohen-Tanugi, J , Cominsky, L R , Conrad, J , Cutini, S , Dermer, C D , De Angelis, A , De Palma, F , Digel, S W , Di Bernardo, G , Do Couto E Silva, E , Drell, P S , Drlica-Wagner, A , Dubois, R , Dumora, D , Farnier, C , Favuzzi, C , Fegan, S J , Focke, W B , Fortin, P , Frailis, M , Fukazawa, Y , Funk, S , Fusco, P , Gaggero, D , Gargano, F , Gasparrini, D , Gehrels, N , Germani, S , Giebels, B , Giglietto, N , Giommi, P , Giordano, F , Glanzman, T , Godfrey, G , Grenier, I A , Grondin, M-H , Grove, J E , Guillemot, L , Guiriec, S , Gustafsson, M , Hanabata, Y , Harding, A K , Hayashida, M , Hughes, R E , Itoh, R , Jackson, M S , Jóhannesson, G , Johnson, A S , Johnson, R P , Johnson, T J , Johnson, W N , Kamae, T , Katagiri, H , Kataoka, J , Kawai, N , Kerr, M , Knödlseder, J , Kocian, M L , Kuehn, F , Kuss, M , Lande, J , Latronico, L , Lemoine-Goumard, M , 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 , Moiseev, A A , 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 , 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 , Reposeur, T , Ritz, S , Rochester, L S , Rodriguez, A Y , Roth, M , Ryde, F , Sadrozinski, H F-W , Sanchez, D , Sander, A , Saz Parkinson, P M , Scargle, J D , Sellerholm, A , Sgrò, C , Shaw, M S , Siskind, E J , Smith, D A , 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 , Ylinen, T , Ziegler, M
Format: Electronic Article Electronic Article
Language: English
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ID: E-ISSN: 1079-7114 ; PMID: 20366411 Version:1
Link: http://pubmed.gov/20366411
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title: Spectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data
format: Article
creator:
  • Abdo, A A
  • Ackermann, M
  • Ajello, M
  • Atwood, W B
  • 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
  • Bregeon, J
  • Brez, A
  • Brigida, M
  • Bruel, P
  • Burnett, T H
  • Buson, S
  • Caliandro, G A
  • Cameron, R A
  • Caraveo, P A
  • Casandjian, J M
  • Cavazzuti, E
  • Cecchi, C
  • Celik, O
  • Charles, E
  • Chekhtman, A
  • Cheung, C C
  • Chiang, J
  • Ciprini, S
  • Claus, R
  • Cohen-Tanugi, J
  • Cominsky, L R
  • Conrad, J
  • Cutini, S
  • Dermer, C D
  • De Angelis, A
  • De Palma, F
  • Digel, S W
  • Di Bernardo, G
  • Do Couto E Silva, E
  • Drell, P S
  • Drlica-Wagner, A
  • Dubois, R
  • Dumora, D
  • Farnier, C
  • Favuzzi, C
  • Fegan, S J
  • Focke, W B
  • Fortin, P
  • Frailis, M
  • Fukazawa, Y
  • Funk, S
  • Fusco, P
  • Gaggero, D
  • Gargano, F
  • Gasparrini, D
  • Gehrels, N
  • Germani, S
  • Giebels, B
  • Giglietto, N
  • Giommi, P
  • Giordano, F
  • Glanzman, T
  • Godfrey, G
  • Grenier, I A
  • Grondin, M-H
  • Grove, J E
  • Guillemot, L
  • Guiriec, S
  • Gustafsson, M
  • Hanabata, Y
  • Harding, A K
  • Hayashida, M
  • Hughes, R E
  • Itoh, R
  • Jackson, M S
  • Jóhannesson, G
  • Johnson, A S
  • Johnson, R P
  • Johnson, T J
  • Johnson, W N
  • Kamae, T
  • Katagiri, H
  • Kataoka, J
  • Kawai, N
  • Kerr, M
  • Knödlseder, J
  • Kocian, M L
  • Kuehn, F
  • Kuss, M
  • Lande, J
  • Latronico, L
  • Lemoine-Goumard, M
  • 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
  • Moiseev, A A
  • 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
  • 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
  • Reposeur, T
  • Ritz, S
  • Rochester, L S
  • Rodriguez, A Y
  • Roth, M
  • Ryde, F
  • Sadrozinski, H F-W
  • Sanchez, D
  • Sander, A
  • Saz Parkinson, P M
  • Scargle, J D
  • Sellerholm, A
  • Sgrò, C
  • Shaw, M S
  • Siskind, E J
  • Smith, D A
  • 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
  • Ylinen, T
  • Ziegler, M
subjects:
  • Astrophysics - High Energy Astrophysical Phenomena
  • Astrophysics - Cosmology And Extragalactic Astrophysics
ispartof: Physical review letters, 12 March 2010, Vol.104(10), pp.101101
description: We report on the first Fermi Large Area Telescope (LAT) measurements of the so-called "extragalactic" diffuse gamma-ray emission (EGB). This component of the diffuse gamma-ray emission is generally considered to have an isotropic or nearly isotropic distribution on the sky with diverse contributions discussed in the literature. The derivation of the EGB is based on detailed modeling of the bright foreground diffuse Galactic gamma-ray emission, the detected LAT sources, and the solar gamma-ray emission. We find the spectrum of the EGB is consistent with a power law with a differential spectral index gamma = 2.41 +/- 0.05 and intensity I(>100 MeV) = (1.03 +/- 0.17) x 10(-5) cm(-2) s(-1) sr(-1), where the error is systematics dominated. Our EGB spectrum is featureless, less intense, and softer than that derived from EGRET data.
language: eng
source:
identifier: E-ISSN: 1079-7114 ; PMID: 20366411 Version:1
fulltext: no_fulltext
issn:
  • 10797114
  • 1079-7114
url: Link


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titleSpectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data
creatorAbdo, A A ; Ackermann, M ; Ajello, M ; Atwood, W B ; 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 ; Bregeon, J ; Brez, A ; Brigida, M ; Bruel, P ; Burnett, T H ; Buson, S ; Caliandro, G A ; Cameron, R A ; Caraveo, P A ; Casandjian, J M ; Cavazzuti, E ; Cecchi, C ; Celik, O ; Charles, E ; Chekhtman, A ; Cheung, C C ; Chiang, J ; Ciprini, S ; Claus, R ; Cohen-Tanugi, J ; Cominsky, L R ; Conrad, J ; Cutini, S ; Dermer, C D ; De Angelis, A ; De Palma, F ; Digel, S W ; Di Bernardo, G ; Do Couto E Silva, E ; Drell, P S ; Drlica-Wagner, A ; Dubois, R ; Dumora, D ; Farnier, C ; Favuzzi, C ; Fegan, S J ; Focke, W B ; Fortin, P ; Frailis, M ; Fukazawa, Y ; Funk, S ; Fusco, P ; Gaggero, D ; Gargano, F ; Gasparrini, D ; Gehrels, N ; Germani, S ; Giebels, B ; Giglietto, N ; Giommi, P ; Giordano, F ; Glanzman, T ; Godfrey, G ; Grenier, I A ; Grondin, M-H ; Grove, J E ; Guillemot, L ; Guiriec, S ; Gustafsson, M ; Hanabata, Y ; Harding, A K ; Hayashida, M ; Hughes, R E ; Itoh, R ; Jackson, M S ; Jóhannesson, G ; Johnson, A S ; Johnson, R P ; Johnson, T J ; Johnson, W N ; Kamae, T ; Katagiri, H ; Kataoka, J ; Kawai, N ; Kerr, M ; Knödlseder, J ; Kocian, M L ; Kuehn, F ; Kuss, M ; Lande, J ; Latronico, L ; Lemoine-Goumard, M ; 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 ; Moiseev, A A ; 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 ; 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 ; Reposeur, T ; Ritz, S ; Rochester, L S ; Rodriguez, A Y ; Roth, M ; Ryde, F ; Sadrozinski, H F-W ; Sanchez, D ; Sander, A ; Saz Parkinson, P M ; Scargle, J D ; Sellerholm, A ; Sgrò, C ; Shaw, M S ; Siskind, E J ; Smith, D A ; 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 ; Ylinen, T ; Ziegler, M
ispartofPhysical review letters, 12 March 2010, Vol.104(10), pp.101101
identifierE-ISSN: 1079-7114 ; PMID: 20366411 Version:1
descriptionWe report on the first Fermi Large Area Telescope (LAT) measurements of the so-called "extragalactic" diffuse gamma-ray emission (EGB). This component of the diffuse gamma-ray emission is generally considered to have an isotropic or nearly isotropic distribution on the sky with diverse contributions discussed in the literature. The derivation of the EGB is based on detailed modeling of the bright foreground diffuse Galactic gamma-ray emission, the detected LAT sources, and the solar gamma-ray emission. We find the spectrum of the EGB is consistent with a power law with a differential spectral index gamma = 2.41 +/- 0.05 and intensity I(>100 MeV) = (1.03 +/- 0.17) x 10(-5) cm(-2) s(-1) sr(-1), where the error is systematics dominated. Our EGB spectrum is featureless, less intense, and softer than that derived from EGRET data.
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subjectAstrophysics - High Energy Astrophysical Phenomena ; Astrophysics - Cosmology And Extragalactic Astrophysics;
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0Abdo, A A
1Ackermann, M
2Ajello, M
3Atwood, W B
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
16Bregeon, J
17Brez, A
18Brigida, M
19Bruel, P
20Burnett, T H
21Buson, S
22Caliandro, G A
23Cameron, R A
24Caraveo, P A
25Casandjian, J M
26Cavazzuti, E
27Cecchi, C
28Celik, O
29Charles, E
30Chekhtman, A
31Cheung, C C
32Chiang, J
33Ciprini, S
34Claus, R
35Cohen-Tanugi, J
36Cominsky, L R
37Conrad, J
38Cutini, S
39Dermer, C D
40de Angelis, A
41de Palma, F
42Digel, S W
43Di Bernardo, G
44do Couto e Silva, E
45Drell, P S
46Drlica-Wagner, A
47Dubois, R
48Dumora, D
49Farnier, C
50Favuzzi, C
51Fegan, S J
52Focke, W B
53Fortin, P
54Frailis, M
55Fukazawa, Y
56Funk, S
57Fusco, P
58Gaggero, D
59Gargano, F
60Gasparrini, D
61Gehrels, N
62Germani, S
63Giebels, B
64Giglietto, N
65Giommi, P
66Giordano, F
67Glanzman, T
68Godfrey, G
69Grenier, I A
70Grondin, M-H
71Grove, J E
72Guillemot, L
73Guiriec, S
74Gustafsson, M
75Hanabata, Y
76Harding, A K
77Hayashida, M
78Hughes, R E
79Itoh, R
80Jackson, M S
81Jóhannesson, G
82Johnson, A S
83Johnson, R P
84Johnson, T J
85Johnson, W N
86Kamae, T
87Katagiri, H
88Kataoka, J
89Kawai, N
90Kerr, M
91Knödlseder, J
92Kocian, M L
93Kuehn, F
94Kuss, M
95Lande, J
96Latronico, L
97Lemoine-Goumard, M
98Longo, F
99Loparco, F
100...
titleSpectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data
descriptionWe report on the first Fermi Large Area Telescope (LAT) measurements of the so-called "extragalactic" diffuse gamma-ray emission (EGB). This component of the diffuse gamma-ray emission is generally considered to have an isotropic or nearly isotropic distribution on the sky with diverse contributions discussed in the literature. The derivation of the EGB is based on detailed modeling of the bright foreground diffuse Galactic gamma-ray emission, the detected LAT sources, and the solar gamma-ray emission. We find the spectrum of the EGB is consistent with a power law with a differential spectral index gamma = 2.41 +/- 0.05 and intensity I(>100 MeV) = (1.03 +/- 0.17) x 10(-5) cm(-2) s(-1) sr(-1), where the error is systematics dominated. Our EGB spectrum is featureless, less intense, and softer than that derived from EGRET data.
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titleSpectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data
authorAbdo, A A ; Ackermann, M ; Ajello, M ; Atwood, W B ; 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 ; Bregeon, J ; Brez, A ; Brigida, M ; Bruel, P ; Burnett, T H ; Buson, S ; Caliandro, G A ; Cameron, R A ; Caraveo, P A ; Casandjian, J M ; Cavazzuti, E ; Cecchi, C ; Celik, O ; Charles, E ; Chekhtman, A ; Cheung, C C ; Chiang, J ; Ciprini, S ; Claus, R ; Cohen-Tanugi, J ; Cominsky, L R ; Conrad, J ; Cutini, S ; Dermer, C D ; De Angelis, A ; De Palma, F ; Digel, S W ; Di Bernardo, G ; Do Couto E Silva, E ; Drell, P S ; Drlica-Wagner, A ; Dubois, R ; Dumora, D ; Farnier, C ; Favuzzi, C ; Fegan, S J ; Focke, W B ; Fortin, P ; Frailis, M ; Fukazawa, Y ; Funk, S ; Fusco, P ; Gaggero, D ; Gargano, F ; Gasparrini, D ; Gehrels, N ; Germani, S ; Giebels, B ; Giglietto, N ; Giommi, P ; Giordano, F ; Glanzman, T ; Godfrey, G ; Grenier, I A ; Grondin, M-H ; Grove, J E ; Guillemot, L ; Guiriec, S ; Gustafsson, M ; Hanabata, Y ; Harding, A K ; Hayashida, M ; Hughes, R E ; Itoh, R ; Jackson, M S ; Jóhannesson, G ; Johnson, A S ; Johnson, R P ; Johnson, T J ; Johnson, W N ; Kamae, T ; Katagiri, H ; Kataoka, J ; Kawai, N ; Kerr, M ; Knödlseder, J ; Kocian, M L ; Kuehn, F ; Kuss, M ; Lande, J ; Latronico, L ; Lemoine-Goumard, M ; 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 ; Moiseev, A A ; 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 ; 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 ; Reposeur, T ; Ritz, S ; Rochester, L S ; Rodriguez, A Y ; Roth, M ; Ryde, F ; Sadrozinski, H F-W ; Sanchez, D ; Sander, A ; Saz Parkinson, P M ; Scargle, J D ; Sellerholm, A ; Sgrò, C ; Shaw, M S ; Siskind, E J ; Smith, D A ; 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 ; Ylinen, T ; Ziegler, M
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10Bellazzini, R
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13Bloom, E D
14Bonamente, E
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19Bruel, P
20Burnett, T H
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25Casandjian, J M
26Cavazzuti, E
27Cecchi, C
28Celik, O
29Charles, E
30Chekhtman, A
31Cheung, C C
32Chiang, J
33Ciprini, S
34Claus, R
35Cohen-Tanugi, J
36Cominsky, L R
37Conrad, J
38Cutini, S
39Dermer, C D
40De Angelis, A
41De Palma, F
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43Di Bernardo, G
44Do Couto E Silva, E
45Drell, P S
46Drlica-Wagner, A
47Dubois, R
48Dumora, D
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54Frailis, M
55Fukazawa, Y
56Funk, S
57Fusco, P
58Gaggero, D
59Gargano, F
60Gasparrini, D
61Gehrels, N
62Germani, S
63Giebels, B
64Giglietto, N
65Giommi, P
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67Glanzman, T
68Godfrey, G
69Grenier, I A
70Grondin, M-H
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72Guillemot, L
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93Kuehn, F
94Kuss, M
95Lande, J
96Latronico, L
97Lemoine-Goumard, M
98Longo, F
99Loparco, F
100...
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5Ballet
6Barbiellini
7Bastieri
8Baughman
9Bechtol
10Bellazzini
11Berenji
12Blandford
13Bloom
14Bonamente
15Borgland
16Bregeon
17Brez
18Brigida
19Bruel
20Burnett
21Buson
22Caliandro
23Cameron
24Caraveo
25Casandjian
26Cavazzuti
27Cecchi
28Celik
29Charles
30Chekhtman
31Cheung
32Chiang
33Ciprini
34Claus
35Cohen-Tanugi
36Cominsky
37Conrad
38Cutini
39Dermer
40de Angelis
41de Palma
42Digel
43Di Bernardo
44Do Couto E Silva
45Drell
46Drlica-Wagner
47Dubois
48Dumora
49Farnier
50Favuzzi
51Fegan
52Focke
53Fortin
54Frailis
55Fukazawa
56Funk
57Fusco
58Gaggero
59Gargano
60Gasparrini
61Gehrels
62Germani
63Giebels
64Giglietto
65Giommi
66Giordano
67Glanzman
68Godfrey
69Grenier
70Grondin
71Grove
72Guillemot
73Guiriec
74Gustafsson
75Hanabata
76Harding
77Hayashida
78Hughes
79Itoh
80Jackson
81Jóhannesson
82Johnson
83Kamae
84Katagiri
85Kataoka
86Kawai
87Kerr
88Knödlseder
89Kocian
90Kuehn
91Kuss
92Lande
93Latronico
94Lemoine-Goumard
95Longo
96Loparco
97Lott
98Lovellette
99Lubrano
100...
aufirst
0A A
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26L R
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au
0Abdo, A A
1Ackermann, M
2Ajello, M
3Atwood, W B
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
16Bregeon, J
17Brez, A
18Brigida, M
19Bruel, P
20Burnett, T H
21Buson, S
22Caliandro, G A
23Cameron, R A
24Caraveo, P A
25Casandjian, J M
26Cavazzuti, E
27Cecchi, C
28Celik, O
29Charles, E
30Chekhtman, A
31Cheung, C C
32Chiang, J
33Ciprini, S
34Claus, R
35Cohen-Tanugi, J
36Cominsky, L R
37Conrad, J
38Cutini, S
39Dermer, C D
40de Angelis, A
41de Palma, F
42Digel, S W
43Di Bernardo, G
44Do Couto E Silva, E
45Drell, P S
46Drlica-Wagner, A
47Dubois, R
48Dumora, D
49Farnier, C
50Favuzzi, C
51Fegan, S J
52Focke, W B
53Fortin, P
54Frailis, M
55Fukazawa, Y
56Funk, S
57Fusco, P
58Gaggero, D
59Gargano, F
60Gasparrini, D
61Gehrels, N
62Germani, S
63Giebels, B
64Giglietto, N
65Giommi, P
66Giordano, F
67Glanzman, T
68Godfrey, G
69Grenier, I A
70Grondin, M-H
71Grove, J E
72Guillemot, L
73Guiriec, S
74Gustafsson, M
75Hanabata, Y
76Harding, A K
77Hayashida, M
78Hughes, R E
79Itoh, R
80Jackson, M S
81Jóhannesson, G
82Johnson, A S
83Johnson, R P
84Johnson, T J
85Johnson, W N
86Kamae, T
87Katagiri, H
88Kataoka, J
89Kawai, N
90Kerr, M
91Knödlseder, J
92Kocian, M L
93Kuehn, F
94Kuss, M
95Lande, J
96Latronico, L
97Lemoine-Goumard, M
98Longo, F
99Loparco, F
100...
atitleSpectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data
jtitlePhysical review letters
risdate20100312
volume104
issue10
spage101101
pages101101
eissn1079-7114
formatjournal
genrearticle
ristypeJOUR
abstractWe report on the first Fermi Large Area Telescope (LAT) measurements of the so-called "extragalactic" diffuse gamma-ray emission (EGB). This component of the diffuse gamma-ray emission is generally considered to have an isotropic or nearly isotropic distribution on the sky with diverse contributions discussed in the literature. The derivation of the EGB is based on detailed modeling of the bright foreground diffuse Galactic gamma-ray emission, the detected LAT sources, and the solar gamma-ray emission. We find the spectrum of the EGB is consistent with a power law with a differential spectral index gamma = 2.41 +/- 0.05 and intensity I(>100 MeV) = (1.03 +/- 0.17) x 10(-5) cm(-2) s(-1) sr(-1), where the error is systematics dominated. Our EGB spectrum is featureless, less intense, and softer than that derived from EGRET data.
pmid20366411
doi10.1103/PhysRevLett.104.101101
orcidid0000-0001-6885-7156
issn00319007
oafree_for_read
date2010-03-12