Fermi LAT Observation of Diffuse Gamma-Rays Produced Through Interactions between Local Interstellar Matter and High Energy Cosmic Rays

Aous A. Abdo; Markus Ackermann; Marco Ajello; W. B. Atwood; Magnus Axelsson; Luca Baldini; Jean Ballet; Guido Barbiellini; D. Bastieri; B.M. Baughmann; K. Bechtol; R. Bellazzini; B. Berenji; 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; P. Carlson; J.M. Casandjian; C. Cecchi; O. Celik; A. Chekhtman; C.C. Cheung; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; S. Cutini; C.D. Dermer; A. de Angelis; F. de Palma; S.W. Digel; E. Do Couto E Silva; P.S. Drell; R. Dubois; D. Dumora; C. Farnier; C. Favuzzi; S.J. Fegan; W.B. Focke; M. Frailis; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; 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; N. Hamada; A.K. Harding; M. Hayashida; R.E. Hugues; G. Johansson; A.S. Johnson; R.P. Johnson; W.N. Johnson; T. Kamae; H. Katagiri; N. Kawai; M. Kerr; Jürgen Knödlseder; M. L. Kocian; F. Kuehn; M. Kuss; J. Lande; L. Latronico; M. Lemoine-Goumard; F. Longo; F. Loparco; B. Lott; M.N. Lovellette; P. Lubrano; A. Makeev; M.N. Mazziotta; 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; J.P. Norris; E. Nuss; T. Ohsugi; A. Okumura; N. Omodei; E. Orlando; J.F. Ormes; M. Ozaki; D. Paneque; J.H. Panetta; D. Parent; M. Pepe; M. Pesce-Rollins; F. Piron; M. Pohl; T. A. Porter; S. Rainò; R. Rando; M. Razzano; A. Reimer; O. Reimer; T. Reposeur; S. Ritz; L. S. Rochester; A. Y. Rodriguez; F. Ryde; H.F-W. Sadrosinski; D. Sanchez; A. Sander; P. M. Saz Parkinson; T.L. Schalk; A. Sellerholm; G. Sgro; D.A. Smith; P.D. Smith; G. Spandre; P. Spinelli; Jean-Luc Starck; F. W. Stecker; M. S. Strickman; A.W. Strong; D. J. Suson; H. Tajima; H. Takahashi; T. Takahashi; T. Tanaka; J.B. Thayer; J.G. 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:10.1088/0004-637X/703/2/1249

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Fermi LAT Observation of Diffuse Gamma-Rays Produced Through Interactions between Local Interstellar Matter and High Energy Cosmic Rays

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Fermi LAT Observation of Diffuse Gamma-Rays Produced Through Interactions between Local Interstellar Matter and High Energy Cosmic Rays

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

The Astrophysical Journal, Vol.703, pp.1249-1256

01/10/2009

DOI: https://doi.org/10.1088/0004-637X/703/2/1249

Abstract

cosmic rays

diffuse radiation

gamma rays: observations

Observations by the Large Area Telescope (LAT) on the \textit{Fermi} mission of diffuse $\gamma$-rays in a mid-latitude region in the third quadrant (Galactic longitude $l$ from $200\arcdeg$ to $260\arcdeg$ and latitude $| b |$ from $22\arcdeg$ to $60\arcdeg$) are reported. The region contains no known large molecular cloud and most of the atomic hydrogen is within 1 kpc of the solar system. The contributions of $\gamma$-ray point sources and inverse Compton scattering are estimated and subtracted. The residual $\gamma$-ray intensity exhibits a linear correlation with the atomic gas column density in energy from 100 MeV to 10 GeV. The measured integrated $\gamma$-ray emissivity is $(1.63 \pm 0.05) \times 10^{-26} {\rm photons s^{-1} sr^{-1} H\mathchar`-atom^{-1}}$ and $(0.66 \pm 0.02) \times 10^{-26} {\rm photons s^{-1} sr^{-1} H\mathchar`-atom^{-1}}$ above 100 MeV and above 300 MeV, respectively, with additional systematic error of $\sim 10%$. The differential emissivity in 100 MeV--10 GeV agrees with calculations based on cosmic ray spectra consistent with those directly measured, at the 10% level. The results obtained indicate that cosmic ray nuclei spectra within 1 kpc from the solar system in regions studied are close to the local interstellar spectra inferred from direct measurements at the Earth within $\sim 10%$.

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Title: Fermi LAT Observation of Diffuse Gamma-Rays Produced Through Interactions between Local Interstellar Matter and High Energy Cosmic Rays
Creators - without role: Aous A. Abdo - National Academies of Sciences, Engineering, and Medicine
Markus Ackermann - Kavli Institute for Particle Astrophysics and Cosmology
Marco Ajello - Kavli Institute for Particle Astrophysics and Cosmology
W. B. Atwood
Magnus Axelsson - Stockholm University
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
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
R. A. Cameron
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
P. Carlson - AlbaNova
J.M. Casandjian - Université Paris Cité
C. Cecchi - University of Perugia
O. Celik - Goddard Space Flight Center
A. Chekhtman - United States Naval Research Laboratory
C.C. Cheung - Goddard Space Flight Center
S. Ciprini - University of Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Laboratoire de Physique Théorique
J. Conrad - Stockholm University
S. Cutini - Agenzia Spaziale Italiana
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
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
C. Farnier - Laboratoire de Physique Théorique
C. Favuzzi - Polytechnic University of Bari
S.J. Fegan - École Polytechnique
W.B. Focke - Stanford University
M. Frailis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Y. Fukazawa - Hiroshima University
S. Funk - Stanford University
P. Fusco - Polytechnic University of Bari
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
D. Gasparrini - Agenzia Spaziale Italiana
N. Gehrels - Goddard Space Flight Center
S. Germani - University of Perugia
B. Giebels - Laboratoire Leprince-Ringuet
N. Giglietto - Istituto Nazionale di Fisica Nucleare, Sezione di 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 - Institut National de Physique Nucléaire et de Physique des Particules
J.E. Grove - United States Naval Research Laboratory
L. Guillemot - Laboratoire de Physique des deux infinis Bordeaux
S. Guiriec - Institut National de Physique Nucléaire et de Physique des Particules
N. Hamada
A.K. Harding - Goddard Space Flight Center
M. Hayashida - Kavli Institute for Particle Astrophysics and Cosmology
R.E. Hugues
G. Johansson
A.S. Johnson - Stanford University
R.P. Johnson - University of California, Santa Cruz
W.N. Johnson - United States Naval Research Laboratory
T. Kamae - Kavli Institute for Particle Astrophysics and Cosmology
H. Katagiri - Hiroshima University
N. Kawai - RIKEN
M. Kerr - University of Washington
Jürgen Knödlseder - Université Toulouse III - Paul Sabatier
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
M. Lemoine-Goumard - Laboratoire de Physique des deux infinis Bordeaux
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
A. Makeev - United States Naval Research Laboratory
M.N. Mazziotta - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
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 - Kavli Institute for Particle Astrophysics and Cosmology
P.L. Nolan - Kavli Institute for Particle Astrophysics and Cosmology
J.P. Norris - University of Denver
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
M. Ozaki - Institute of Space and Astronautical Science
D. Paneque - Stanford University
J.H. Panetta - Kavli Institute for Particle Astrophysics and Cosmology
D. Parent - Laboratoire de Physique des deux infinis Bordeaux
M. Pepe - University of Perugia
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Centre National de la Recherche Scientifique
M. Pohl - Iowa State University
T. A. Porter - University of California, Santa Cruz
S. Rainò - Polytechnic University of Bari
R. Rando - University of Padua
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
O. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
T. Reposeur - Laboratoire de Physique des deux infinis Bordeaux
S. Ritz - Goddard Space Flight Center
L. S. Rochester - Kavli Institute for Particle Astrophysics and Cosmology
A. Y. Rodriguez - Institute of Space Sciences
F. Ryde - AlbaNova
H.F-W. Sadrosinski
D. Sanchez - École Polytechnique
A. Sander - The Ohio State University
P. M. Saz Parkinson - University of California, Santa Cruz
T.L. Schalk - University of California, Santa Cruz
A. Sellerholm - Stockholm University
G. Sgro
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
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 - Stanford University
H. Takahashi - Hiroshima University
T. Takahashi - Institute of Space and Astronautical Science
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
J.B. Thayer - Stanford University
J.G. Thayer - Kavli Institute for Particle Astrophysics and Cosmology
D.J. Thompson - Goddard Space Flight Center
L. Tibaldo - Istituto Nazionale di Fisica Nucleare, Sezione di Padova
D. F. Torres - Institute of Space Sciences
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 - Kavli Institute for Particle Astrophysics and Cosmology
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: The Astrophysical Journal, Vol.703, pp.1249-1256
Identifiers: 9937215109311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00429043