Spectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data.
Spectrum of the isotropic diffuse gamma-ray emission derived from first-year Fermi Large Area Telescope data.
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DOI：
10.1103/physrevlett.104.101101
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发表时间：
2010-02
影响因子：
8.6
通讯作者：
A. Abdo;M. Ackermann;M. Ajello;W. Atwood;L. Baldini;J. Ballet;G. Barbiellini;D. Bastieri;B. Baughman;K. Bechtol;R. Bellazzini;B. Berenji;R. Blandford;E. Bloom;E. Bonamente;A. Borgland;J. Bregeon;A. Brez;M. Brigida;P. Bruel;T. Burnett;S. Buson;G. Caliandro;R. Cameron;P. Caraveo;J. Casandjian;E. Cavazzuti;C. Cecchi;O. Celik;E. Charles;A. Chekhtman;C. C. Cheung-C.;J. Chiang;S. Ciprini;R. Claus;J. Cohen-Tanugi;L. Cominsky;J. Conrad;S. Cutini;C. Dermer;A. De Angelis;F. de Palma;S. Digel;G. Di Bernardo;E. do Couto e Silva;P. Drell;A. Drlica-Wagner;R. Dubois;D. Dumora;C. Farnier;C. Favuzzi;S. Fegan;W. Focke;P. Fortin;M. Frailis;Y. Fukazawa;S. Funk;P. Fusco;D. Gaggero;F. Gargano;D. Gasparrini;N. Gehrels;S. Germani;B. Giebels;N. Giglietto;P. Giommi;F. Giordano;T. Glanzman;G. Godfrey;I. Grenier;M. Grondin;J. Grove;L. Guillemot;S. Guiriec;M. Gustafsson;Y. Hanabata;A. Harding;M. Hayashida;R. Hughes;R. Itoh;M. Jackson;G. Jóhannesson;A. Johnson;R. Johnson;T. Johnson;W. Johnson;T. Kamae;H. Katagiri;J. Kataoka;N. Kawai;M. Kerr;J. Knödlseder;M. Kocián;F. Kuehn;M. Kuss;J. Lande;L. Latronico;M. Lemoine-Goumard;F. Longo;F. Loparco;B. Lott;M. Lovellette;P. Lubrano;G. Madejski;A. Makeev;M. Mazziotta;W. Mcconville;J. Mcenery;C. Meurer;P. Michelson;W. Mitthumsiri;T. Mizuno;A. Moiseev;C. Monte;M. Monzani;A. Morselli;I. Moskalenko;S. Murgia;P. Nolan;J. Norris;E. Nuss;T. Ohsugi;N. Omodei;E. Orlando;J. Ormes;D. Paneque;J. Panetta;D. Parent;V. Pelassa;M. Pepe;M. Pesce-Rollins;F. Piron;T. Porter;S. Rainò;R. Rando;M. Razzano;A. Reimer;O. Reimer;T. Reposeur;S. Ritz;L. Rochester;A. Rodríguez;M. Roth;F. Ryde;H. Sadrozinski;D. Sanchez;A. Sander;P. S. Saz Parkinson;J. Scargle;A. Sellerholm;C. Sgro’;M. Shaw;E. Siskind;D. Smith;P. Smith;G. Spandre;P. Spinelli;J. Starck;M. Strickman;A. Strong;D. Suson;H. Tajima;H. Takahashi;T. Takahashi;T. Tanaka;J. Thayer;J. Thayer;D. Thompson;L. Tibaldo;D. Torres;G. Tosti;A. Tramacere;Y. Uchiyama;T. Usher;V. Vasileiou;N. Vilchez;V. Vitale;A. Waite;P. Wang;B. Winer;K. Wood;T. Ylinen;M. Ziegler
中科院分区：
文献类型：
--
作者：
A. Abdo;M. Ackermann;M. Ajello;W. Atwood;L. Baldini;J. Ballet;G. Barbiellini;D. Bastieri;B. Baughman;K. Bechtol;R. Bellazzini;B. Berenji;R. Blandford;E. Bloom;E. Bonamente;A. Borgland;J. Bregeon;A. Brez;M. Brigida;P. Bruel;T. Burnett;S. Buson;G. Caliandro;R. Cameron;P. Caraveo;J. Casandjian;E. Cavazzuti;C. Cecchi;O. Celik;E. Charles;A. Chekhtman;C. C. Cheung-C.;J. Chiang;S. Ciprini;R. Claus;J. Cohen-Tanugi;L. Cominsky;J. Conrad;S. Cutini;C. Dermer;A. De Angelis;F. de Palma;S. Digel;G. Di Bernardo;E. do Couto e Silva;P. Drell;A. Drlica-Wagner;R. Dubois;D. Dumora;C. Farnier;C. Favuzzi;S. Fegan;W. Focke;P. Fortin;M. Frailis;Y. Fukazawa;S. Funk;P. Fusco;D. Gaggero;F. Gargano;D. Gasparrini;N. Gehrels;S. Germani;B. Giebels;N. Giglietto;P. Giommi;F. Giordano;T. Glanzman;G. Godfrey;I. Grenier;M. Grondin;J. Grove;L. Guillemot;S. Guiriec;M. Gustafsson;Y. Hanabata;A. Harding;M. Hayashida;R. Hughes;R. Itoh;M. Jackson;G. Jóhannesson;A. Johnson;R. Johnson;T. Johnson;W. Johnson;T. Kamae;H. Katagiri;J. Kataoka;N. Kawai;M. Kerr;J. Knödlseder;M. Kocián;F. Kuehn;M. Kuss;J. Lande;L. Latronico;M. Lemoine-Goumard;F. Longo;F. Loparco;B. Lott;M. Lovellette;P. Lubrano;G. Madejski;A. Makeev;M. Mazziotta;W. Mcconville;J. Mcenery;C. Meurer;P. Michelson;W. Mitthumsiri;T. Mizuno;A. Moiseev;C. Monte;M. Monzani;A. Morselli;I. Moskalenko;S. Murgia;P. Nolan;J. Norris;E. Nuss;T. Ohsugi;N. Omodei;E. Orlando;J. Ormes;D. Paneque;J. Panetta;D. Parent;V. Pelassa;M. Pepe;M. Pesce-Rollins;F. Piron;T. Porter;S. Rainò;R. Rando;M. Razzano;A. Reimer;O. Reimer;T. Reposeur;S. Ritz;L. Rochester;A. Rodríguez;M. Roth;F. Ryde;H. Sadrozinski;D. Sanchez;A. Sander;P. S. Saz Parkinson;J. Scargle;A. Sellerholm;C. Sgro’;M. Shaw;E. Siskind;D. Smith;P. Smith;G. Spandre;P. Spinelli;J. Starck;M. Strickman;A. Strong;D. Suson;H. Tajima;H. Takahashi;T. Takahashi;T. Tanaka;J. Thayer;J. Thayer;D. Thompson;L. Tibaldo;D. Torres;G. Tosti;A. Tramacere;Y. Uchiyama;T. Usher;V. Vasileiou;N. Vilchez;V. Vitale;A. Waite;P. Wang;B. Winer;K. Wood;T. Ylinen;M. Ziegler
我们报道了第一台费米大面积望远镜(LAT)对所谓的“河外”弥漫伽马射线发射(EGB)的测量结果。漫射伽马射线的这一分量通常被认为在天空中具有各向同性或接近各向同性的分布，在文献中讨论了不同的贡献。EGB的推导基于对明亮前景漫反射星系伽马射线发射、探测到的LAT源和太阳伽马射线发射的详细建模。我们发现银河系的光谱符合幂定律，微分谱指数Gamma=2.41+/-0.05，强度I(>；100 MeV)=(1.03+/-0.17)×10(-5)cm(-2)S(-1)锶(-1)，其中误差以系统学为主。与白鹭数据相比，我们的EGB光谱没有特征，强度较低，也更柔和。
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.