Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes

A. A. Abdo; Markus Ackermann; Marco Ajello; B. Anderson; W. B. Atwood; Magnus Axelsson; Luca Baldini; Jean Ballet; Guido Barbiellini; D. Bastieri; B.M. Baughmann; K. Bechtol; R. Bellazzini; B. Berenji; R. D. Blandford; E.D. Bloom; E. Bonamente; A.W. Borgland; J. Bregeon; A. Brez; M. Brigida; Pascal Bruel; T.H. Burnett; G.A. Caliandro; R.A. Cameron; P. A. Caraveo; J.M. Casandjian; C. Cecchi; E. Charles; A. Chekhtman; C.C. Cheung; J. Chiang; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; H. Dereli; C.D. Dermer; A. de Angelis; F. de Palma; S.W. Digel; G. Di Bernardo; M. Dormody; E. Do Couto E Silva; P.S. Drell; R. Dubois; D. Dumora; Y. Edmonds; C. Farnier; C. Favuzzi; S.J. Fegan; W.B. Focke; M. Frailis; Y. Fukazawa; S. Funk; P. Fusco; D. Gaggero; F. Gargano; N. Gehrels; S. Germani; B. Giebels; N. Giglietto; F. Giordano; T. Glanzman; G. Godfrey; I.A. Grenier; M.H. Grondin; J.E. Grove; L. Guillemot; S. Guiriec; Y. Hanabata; A.K. Harding; M. Hayashida; E. Hays; R.E. Hugues; G. Jóhannesson; A.S. Johnson; R.P. Johnson; T.J. Johnson; W.N. Johnson; T. Kamae; H. Katagiri; J. Kataoka; N. Kawai; M. Kerr; Jürgen Knödlseder; M. L. Kocian; F. Kuehn; M. Kuss; J. Lande; L. Latronico; F. Longo; F. Loparco; B. Lott; M.N. Lovellette; P. Lubrano; G.M. Madjeski; A. Makeev; M.N. Mazziotta; W. Mcconville; J.E. Mcenery; C. Meurer; P.F. Michelson; W. Mitthumsiri; T. Mizuno; A.A. Moiseev; C. Monte; M.E. Monzani; A. Morselli; I.V. Moskalenko; S. Murgia; P.L. Nolan; E. Nuss; T. Ohsugi; A. Okumura; N. Omodei; E. Orlando; J.F. Ormes; D. Paneque; J.H. Panetta; D. Parent; V. Pelassa; M. Pepe; M. Pesce-Rollins; F. Piron; T.A. Porter; S. Rainò; R. Rando; M. Razzano; A. Reimer; O. Reimer; T. Reposeur; S. Ritz; A. Y. Rodriguez; M. Roth; F. Ryde; H. F.-W. Sadrozinski; D. Sanchez; A. Sander; P.M. Saz Parkinson; J.D. Scargle; A. Sellerholm; C. Sgrò; D. A. Smith; P. D. Smith; G. Spandre; P. Spinelli; Jean-Luc Starck; F. W. Stecker; E. Striani; M.S. Strickman; A.W. Strong; D. J. Suson; H. Tajima; H. Takahashi; T. Tanaka; J. B. Thayer; D. J. Thompson; L. Tibaldo; D.F. Torres; G. Tosti; A. Tramacere; Y. Uchiyama; T.L. Usher; V. Vasileiou; N. Vilchez; V. Vitale; A. P. Waite; P. Wang; B. L. Winer; K.S. Wood; T. Ylinen; M. Ziegler

doi:10.1103/PhysRevLett.103.251101

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Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes

Journal article

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Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes

A. A. Abdo, Markus Ackermann, Marco Ajello, B. Anderson, W. B. Atwood, Magnus Axelsson, Luca Baldini, Jean Ballet, Guido Barbiellini, D. Bastieri, …

Physical Review Letters, Vol.103

18/12/2009

DOI: https://doi.org/10.1103/PhysRevLett.103.251101

Abstract

95.85.Pw, 96.50.sb, 98.70.Sa

The diffuse Galactic gamma-ray emission is produced by cosmic rays (CRs) interacting with the interstellar gas and radiation field. Measurements by the Energetic Gamma-Ray Experiment Telescope (EGRET) instrument on the Compton Gamma-Ray Observatory indicated excess gamma-ray emission > 1 GeV relative to diffuse Galactic gamma-ray emission models consistent with directly measured CR spectra (the so-called ``EGRET GeV excess''). The excess emission was observed in all directions on the sky, and a variety of explanations have been proposed, including beyond-the-Standard-Model scenarios like annihilating or decaying dark matter. The Large Area Telescope (LAT) instrument on the Fermi Gamma-ray Space Telescope has measured the diffuse gamma-ray emission with improved sensitivity and resolution compared to EGRET. We report on LAT measurements of the diffuse gamma-ray emission for energies 100 MeV to 10 GeV and Galactic latitudes 10 deg. <= |b| <= 20 deg. The LAT spectrum for this region of the sky is well reproduced by a diffuse Galactic gamma-ray emission model that is consistent with local CR spectra and inconsistent with the EGRET GeV excess.

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Title: Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes
Creators - without role: A. A. Abdo
Markus Ackermann - SLAC National Accelerator Laboratory
Marco Ajello - Stanford University
B. Anderson - University of California, Santa Cruz
W. B. Atwood
Magnus Axelsson - AlbaNova
Luca Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Astrophysique, Instrumentation et Modélisation
Guido Barbiellini - University of Trieste
D. Bastieri - University of Padua
B.M. Baughmann
K. Bechtol - Kavli Institute for Particle Astrophysics and Cosmology
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
B. Berenji - Stanford University
R. D. Blandford - Kavli Institute for Particle Astrophysics and Cosmology
E.D. Bloom - Kavli Institute for Particle Astrophysics and Cosmology
E. Bonamente - University of Perugia
A.W. Borgland - Stanford University
J. Bregeon - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Brez - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Brigida - Polytechnic University of Bari
Pascal Bruel - École Polytechnique
T.H. Burnett - University of Washington
G.A. Caliandro - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
R.A. Cameron - Stanford University
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
J.M. Casandjian - Université Paris Cité
C. Cecchi - University of Perugia
E. Charles - Kavli Institute for Particle Astrophysics and Cosmology
A. Chekhtman - United States Naval Research Laboratory
C.C. Cheung - Goddard Space Flight Center
J. Chiang - Kavli Institute for Particle Astrophysics and Cosmology
S. Ciprini - University of Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Centre National de la Recherche Scientifique
J. Conrad - Stockholm University
H. Dereli - University of Padua
C.D. Dermer - United States Naval Research Laboratory
A. de Angelis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. de Palma - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
S.W. Digel - Kavli Institute for Particle Astrophysics and Cosmology
G. Di Bernardo - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Dormody - University of California, Santa Cruz
E. Do Couto E Silva
P.S. Drell - Kavli Institute for Particle Astrophysics and Cosmology
R. Dubois - Kavli Institute for Particle Astrophysics and Cosmology
D. Dumora - Laboratoire de Physique des deux infinis Bordeaux
Y. Edmonds - Kavli Institute for Particle Astrophysics and Cosmology
C. Farnier - Laboratoire de Physique Théorique
C. Favuzzi - Polytechnic University of Bari
S.J. Fegan - Laboratoire Leprince-Ringuet
W.B. Focke - SLAC National Accelerator Laboratory
M. Frailis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Y. Fukazawa - Hiroshima University
S. Funk - Stanford University
P. Fusco - Polytechnic University of Bari
D. Gaggero - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
N. Gehrels - Goddard Space Flight Center
S. Germani - University of Perugia
B. Giebels - Laboratoire Leprince-Ringuet
N. Giglietto - Polytechnic University of Bari
F. Giordano - Polytechnic University of Bari
T. Glanzman - Stanford University
G. Godfrey - Kavli Institute for Particle Astrophysics and Cosmology
I.A. Grenier - CEA Paris-Saclay
M.H. Grondin - Laboratoire de Physique des deux infinis Bordeaux
J.E. Grove - United States Naval Research Laboratory
L. Guillemot - Laboratoire de Physique des deux infinis Bordeaux
S. Guiriec - University of Alabama in Huntsville
Y. Hanabata - Hiroshima University
A.K. Harding - Goddard Space Flight Center
M. Hayashida - SLAC National Accelerator Laboratory
E. Hays - Goddard Space Flight Center
R.E. Hugues
G. Jóhannesson - Kavli Institute for Particle Astrophysics and Cosmology
A.S. Johnson - SLAC National Accelerator Laboratory
R.P. Johnson - University of California, Santa Cruz
T.J. Johnson - University of Maryland, College Park
W.N. Johnson - United States Naval Research Laboratory
T. Kamae - Kavli Institute for Particle Astrophysics and Cosmology
H. Katagiri - Hiroshima University
J. Kataoka - Tokyo Institute of Technology
N. Kawai - RIKEN
M. Kerr - University of Washington
Jürgen Knödlseder - Centre National d'Études Spatiales
M. L. Kocian - Kavli Institute for Particle Astrophysics and Cosmology
F. Kuehn - The Ohio State University
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
L. Latronico - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Longo - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. Loparco - Polytechnic University of Bari
B. Lott - Laboratoire de Physique des deux infinis Bordeaux
M.N. Lovellette - United States Naval Research Laboratory
P. Lubrano - University of Perugia
G.M. Madjeski
A. Makeev - United States Naval Research Laboratory
M.N. Mazziotta - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
W. Mcconville - Goddard Space Flight Center
J.E. Mcenery - Goddard Space Flight Center
C. Meurer - AlbaNova
P.F. Michelson - Kavli Institute for Particle Astrophysics and Cosmology
W. Mitthumsiri - Kavli Institute for Particle Astrophysics and Cosmology
T. Mizuno - Hiroshima University
A.A. Moiseev - University of Maryland, College Park
C. Monte - Polytechnic University of Bari
M.E. Monzani - Kavli Institute for Particle Astrophysics and Cosmology
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
I.V. Moskalenko - Stanford University
S. Murgia - SLAC National Accelerator Laboratory
P.L. Nolan - Kavli Institute for Particle Astrophysics and Cosmology
E. Nuss - Laboratoire de Physique Théorique
T. Ohsugi - Hiroshima University
A. Okumura - The University of Tokyo
N. Omodei - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. Orlando - Max Planck Institute for Extraterrestrial Physics
J.F. Ormes - University of Denver
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
J.H. Panetta - Stanford University
D. Parent - Institut National de Physique Nucléaire et de Physique des Particules
V. Pelassa - Laboratoire de Physique Théorique
M. Pepe - University of Perugia
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Université de Montpellier
T.A. Porter - University of California, Santa Cruz
S. Rainò - Polytechnic University of Bari
R. Rando - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Reimer - Universität Innsbruck
O. Reimer - Universität Innsbruck
T. Reposeur - Laboratoire de Physique des deux infinis Bordeaux
S. Ritz - University of California, Santa Cruz
A. Y. Rodriguez - Institute of Space Sciences
M. Roth - University of Washington
F. Ryde - AlbaNova
H. F.-W. Sadrozinski - University of California, Santa Cruz
D. Sanchez - Laboratoire Leprince-Ringuet
A. Sander - The Ohio State University
P.M. Saz Parkinson
J.D. Scargle - Ames Research Center
A. Sellerholm - AlbaNova
C. Sgrò - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
D. A. Smith - Laboratoire de Physique des deux infinis Bordeaux
P. D. Smith - The Ohio State University
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Polytechnic University of Bari
Jean-Luc Starck - Astrophysique Interprétation Modélisation
F. W. Stecker - Goddard Space Flight Center
E. Striani - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
M.S. Strickman - United States Naval Research Laboratory
A.W. Strong - Max Planck Institute for Extraterrestrial Physics
D. J. Suson - Purdue University Northwest
H. Tajima - Kavli Institute for Particle Astrophysics and Cosmology
H. Takahashi - Hiroshima University
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
J. B. Thayer - Stanford University
D. J. Thompson - Goddard Space Flight Center
L. Tibaldo - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
D.F. Torres - Institució Catalana de Recerca i Estudis Avançats
G. Tosti - University of Perugia
A. Tramacere - Consorzio Interuniversitario Fisica Spaziale
Y. Uchiyama - Kavli Institute for Particle Astrophysics and Cosmology
T.L. Usher - Kavli Institute for Particle Astrophysics and Cosmology
V. Vasileiou - Goddard Space Flight Center
N. Vilchez - Université Toulouse III - Paul Sabatier
V. Vitale - University of Rome Tor Vergata
A. P. Waite - Kavli Institute for Particle Astrophysics and Cosmology
P. Wang - SLAC National Accelerator Laboratory
B. L. Winer - The Ohio State University
K.S. Wood - United States Naval Research Laboratory
T. Ylinen - KTH Royal Institute of Technology
M. Ziegler - University of California, Santa Cruz
Publication Details: Physical Review Letters, Vol.103
Identifiers: 9941170609311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00446920