Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT

A. A. Abdo; Markus Ackermann; Marco Ajello; Luca Baldini; Jean Ballet; Guido Barbiellini; M. G. Baring; D. Bastieri; B. M. Baughman; 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; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; J. M. Casandjian; C. Cecchi; Ö. Çelik; A. Chekhtman; C. C. Cheung; J. Chiang; S. Ciprini; R. Claus; Ismaël Cognard; J. Cohen-Tanugi; L. R. Cominsky; 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. Espinoza; C. Farnier; C. Favuzzi; S. J. Fegan; W. B. Focke; P. Fortin; M. Frailis; Y. Fukazawa; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; S. Germani; G. Giavitto; 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. Hughes; M. S. Jackson; G. Jóhannesson; A. S. Johnson; T. J. Johnson; W. N. Johnson; T. Kamae; H. Katagiri; J. Kataoka; J. Katsuta; N. Kawai; M. Kerr; Jürgen Knödlseder; M. L. Kocian; M. Kramer; M. Kuss; J. Lande; L. Latronico; M. Lemoine-Goumard; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; A. G. Lyne; G. M. Madejski; A. Makeev; M. N. Mazziotta; J. E. Mcenery; C. Meurer; P. F. Michelson; W. Mitthumsiri; T. Mizuno; C. Monte; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; T. Nakamori; P. L. Nolan; J. P. Norris; A. Noutsos; E. Nuss; T. Ohsugi; N. Omodei; E. Orlando; J. F. Ormes; D. Paneque; 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; L. S. Rochester; A. Y. Rodriguez; R. W. Romani; M. Roth; F. Ryde; H. F.-W. Sadrozinski; D. Sanchez; A. Sander; P. M. Saz Parkinson; J. D. Scargle; C. Sgrò; E. J. Siskind; David Stanley Smith; P. D. Smith; G. Spandre; P. Spinelli; B. W. Stappers; F. W. Stecker; M. S. Strickman; D. J. Suson; H. Tajima; ‡ H. Takahashi; T. Takahashi; T. Tanaka; J.B. Thayer; J. G. Thayer; Gilles Theureau; D. J. Thompson; L. Tibaldo; O. Tibolla; D. F. Torres; G. Tosti; A. Tramacere; Y. Uchiyama; T.L. Usher; V. Vasileiou; C. Venter; N. Vilchez; V. Vitale; A. P. Waite; P. Wang; B. L. Winer; K. S. Wood; R. Yamazaki; T. Ylinen; M. Ziegler

doi:10.1126/science.1182787

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Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT

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Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT

A. A. Abdo, Markus Ackermann, Marco Ajello, Luca Baldini, Jean Ballet, Guido Barbiellini, M. G. Baring, D. Bastieri, B. M. Baughman, K. Bechtol, …

Science, Vol.327, pp.1103-1106

26/02/2010

DOI: https://doi.org/10.1126/science.1182787

Abstract

Recent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to ~1015 electron volts. However, the nature of the particles that produce the emission remains ambiguous. We report observations of SNR W44 with the Fermi Large Area Telescope at energies between 2 × 108 electron volts and 3 × 1011 electron volts. The detection of a source with a morphology corresponding to the SNR shell implies that the emission is produced by particles accelerated there. The gamma-ray spectrum is well modeled with emission from protons and nuclei. Its steepening above ~109 electron volts provides a probe with which to study how particle acceleration responds to environmental effects such as shock propagation in dense clouds and how accelerated particles are released into interstellar space.

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Title: Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
Creators - without role: A. A. Abdo
Markus Ackermann - Kavli Institute for Particle Astrophysics and Cosmology
Marco Ajello - Kavli Institute for Particle Astrophysics and Cosmology
Luca Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Centre National de la Recherche Scientifique
Guido Barbiellini - University of Trieste
M. G. Baring
D. Bastieri - University of Padua
B. M. Baughman
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
E. D. Bloom
E. Bonamente - University of Perugia
A. W. Borgland
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
S. Buson - University of Padua
G. A. Caliandro
R. A. Cameron
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
J. M. Casandjian - Astrophysique Interprétation Modélisation
C. Cecchi - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
Ö. Çelik - Goddard Space Flight Center
A. Chekhtman - United States Naval Research Laboratory
C. C. Cheung
J. Chiang - Kavli Institute for Particle Astrophysics and Cosmology
S. Ciprini - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
Ismaël Cognard - Institut National des Sciences de l'Univers
J. Cohen-Tanugi - Institut National de Physique Nucléaire et de Physique des Particules
L. R. Cominsky
J. Conrad - Stockholm University
S. Cutini - Agenzia Spaziale Italiana
C. D. Dermer
A. de Angelis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. de Palma - Polytechnic University of Bari
S. W. Digel
E. Do Couto E Silva
P. S. Drell
R. Dubois - Kavli Institute for Particle Astrophysics and Cosmology
D. Dumora - Laboratoire de Physique des deux infinis Bordeaux
C. Espinoza - University of Manchester
C. Farnier - Laboratoire de Physique Théorique
C. Favuzzi - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
S. J. Fegan - Laboratoire Leprince-Ringuet
W. B. Focke
P. Fortin - Centre National de la Recherche Scientifique
M. Frailis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Y. Fukazawa - Hiroshima University
S. Funk - SLAC National Accelerator Laboratory
P. Fusco - Istituto Nazionale di Fisica Nucleare, Sezione di 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
G. Giavitto - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
B. Giebels - École Polytechnique
N. Giglietto - Polytechnic University of Bari
F. Giordano - Polytechnic University of Bari
T. Glanzman - Kavli Institute for Particle Astrophysics and Cosmology
G. Godfrey - Kavli Institute for Particle Astrophysics and Cosmology
I. A. Grenier - Astrophysique Interprétation Modélisation
M.-H. Grondin - Université de Bordeaux
J. E. Grove
L. Guillemot - Laboratoire de Physique des deux infinis Bordeaux
S. Guiriec - University of Alabama in Huntsville
Y. Hanabata - Hiroshima University
A. K. Harding
M. Hayashida - Kavli Institute for Particle Astrophysics and Cosmology
E. Hays - Goddard Space Flight Center
R. E. Hughes
M. S. Jackson
G. Jóhannesson - Kavli Institute for Particle Astrophysics and Cosmology
A. S. Johnson
T. J. Johnson
W. N. Johnson
T. Kamae - Kavli Institute for Particle Astrophysics and Cosmology
H. Katagiri - Hiroshima University
J. Kataoka - Tokyo Institute of Technology
J. Katsuta - Institute of Space and Astronautical Science
N. Kawai - RIKEN
M. Kerr - University of Washington
Jürgen Knödlseder - Université Toulouse III - Paul Sabatier
M. L. Kocian
M. Kramer - University of Manchester
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 - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
B. Lott - Laboratoire de Physique des deux infinis Bordeaux
M. N. Lovellette
P. Lubrano - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
A. G. Lyne
G. M. Madejski
A. Makeev - United States Naval Research Laboratory
M. N. Mazziotta
J. E. Mcenery
C. Meurer - Sonoma State University
P. F. Michelson
W. Mitthumsiri - Kavli Institute for Particle Astrophysics and Cosmology
T. Mizuno - Hiroshima University
C. Monte - Polytechnic University of Bari
M. E. Monzani
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
I. V. Moskalenko
S. Murgia - Kavli Institute for Particle Astrophysics and Cosmology
T. Nakamori - Tokyo Institute of Technology
P. L. Nolan
J. P. Norris
A. Noutsos - University of Manchester
E. Nuss - Institut National de Physique Nucléaire et de Physique des Particules
T. Ohsugi - Hiroshima University
N. Omodei - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. Orlando - Max Planck Institute for Extraterrestrial Physics
J. F. Ormes
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
D. Parent - Laboratoire de Physique des deux infinis Bordeaux
V. Pelassa - Institut National de Physique Nucléaire et de Physique des Particules
M. Pepe - University of Perugia
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Institut National de Physique Nucléaire et de Physique des Particules
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 - SLAC National Accelerator Laboratory
O. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
T. Reposeur - Laboratoire de Physique des deux infinis Bordeaux
L. S. Rochester
A. Y. Rodriguez
R. W. Romani
M. Roth - University of Washington
F. Ryde - Fraunhofer Chalmers Research Centre for Industrial Mathematics
H. F.-W. Sadrozinski
D. Sanchez - Centre National de la Recherche Scientifique
A. Sander - The Ohio State University
P. M. Saz Parkinson
J. D. Scargle
C. Sgrò - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. J. Siskind
David Stanley Smith - Laboratoire de Physique des deux infinis Bordeaux
P. D. Smith
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
B. W. Stappers
F. W. Stecker
M. S. Strickman
D. J. Suson
H. Tajima - Stanford University
‡ H. Takahashi
T. Takahashi - Institute of Space and Astronautical Science
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
J.B. Thayer - Kavli Institute for Particle Astrophysics and Cosmology
J. G. Thayer
Gilles Theureau - Institut National des Sciences de l'Univers
D. J. Thompson
L. Tibaldo - Université Paris Cité
O. Tibolla - Max Planck Institute for Nuclear Physics
D. F. Torres
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
C. Venter - Goddard Space Flight Center
N. Vilchez - Université Toulouse III - Paul Sabatier
V. Vitale - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
A. P. Waite
P. Wang - Kavli Institute for Particle Astrophysics and Cosmology
B. L. Winer
K. S. Wood
R. Yamazaki - Hiroshima University
T. Ylinen - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. Ziegler - University of California, Santa Cruz
Publication Details: Science, Vol.327, pp.1103-1106
Identifiers: 9934175909311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00469710