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

Recent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to approximately 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 en... Full description

Journal Title: Science 2010, Vol.327(5969), pp.1103-1106
Main Author: Abdo , A.A.
Other Authors: Ackermann , M. , Ajello , M. , Baldini , L. , Ballet , J. , Barbiellini , G. , Baring , M.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. , Cecchi , C. , Çelik , Ö. , Chekhtman , A. , Cheung , C.C. , Chiang , J. , Ciprini , S. , Claus , R. , Cognard , I. , Cohen-Tanugi , J. , Cominsky , L.R. , Conrad , J. , Cutini , S. , Dermer , C.D. , De Angelis , A. , De Palma , F. , Digel , S.W. , Do Couto E Silva , E. , Drell , P.S. , Dubois , R. , Dumora , D. , Espinoza , C. , Farnier , C. , Favuzzi , C. , Fegan , S.J. , Focke , W.B. , Fortin , P. , Frailis , M. , Fukazawa , Y. , Funk , S. , Fusco , P. , Gargano , F. , Gasparrini , D. , Gehrels , N. , Germani , S. , Giavitto , G. , Giebels , B. , Giglietto , N. , Giordano , F. , Glanzman , T. , Godfrey , G. , Grenier , I.A. , Grondin , M.-H. , Grove , J.E. , Guillemot , L. , Guiriec , S. , Hanabata , Y. , Harding , A.K. , Hayashida , M. , Hays , E. , Hughes , R.E. , Jackson , M.S. , Jóhannesson , G. , Johnson , A.S. , Johnson , T.J. , Johnson , W.N. , Kamae , T. , Katagiri , H. , Kataoka , J. , Katsuta , J. , Kawai , N. , Kerr , M. , Knödlseder , J. , Kocian , M.L. , Kramer , M. , Kuss , M. , Lande , J. , Latronico , L. , Lemoine-Goumard , M. , Longo , F. , Loparco , F. , Lott , B. , Lovellette , M.N. , Lubrano , P. , Lyne , A.G. , Madejski , G.M. , Makeev , A. , Mazziotta , M.N. , Mcenery , J.E. , Meurer , C. , Michelson , P.F. , Mitthumsiri , W. , Mizuno , T. , Monte , C. , Monzani , M.E. , Morselli , A. , Moskalenko , I.V. , Murgia , S. , Nakamori , T. , Nolan , P.L. , Norris , J.P. , Noutsos , A. , Nuss , E. , Ohsugi , T. , Omodei , N. , Orlando , E. , Ormes , J.F. , Paneque , D. , 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. , Rochester , L.S. , Rodriguez , A.Y. , Romani , R.W. , Roth , M. , Ryde , F. , Sadrozinski , H.F.-W. , Sanchez , D. , Sander , A. , Parkinson , P.M. Saz , Scargle , J.D. , Sgrò , C. , Siskind , E.J. , Smith , D.A. , Smith , P.D. , Spandre , G. , Spinelli , P. , Stappers , B.W. , Stecker , F.W. , Strickman , M.S. , Suson , D.J. , Tajima , H. , Takahashi , H. , Takahashi , T. , Tanaka , T. , Thayer , J.B. , Thayer , J.G. , Theureau , G. , Thompson , D.J. , Tibaldo , L. , Tibolla , O. , Torres , D.F. , Tosti , G. , Tramacere , A. , Uchiyama , Y. , Usher , T.L. , Vasileiou , V. , Venter , C. , Vilchez , N. , Vitale , V. , Waite , A.P. , Wang , P. , Winer , B.L. , Wood , K.S. , Yamazaki , R. , Ylinen , T. , Ziegler , M.
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0036-8075
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recordid: faoagrisUS201301808338
title: Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
format: Article
creator:
  • Abdo , A.A.
  • Ackermann , M.
  • Ajello , M.
  • Baldini , L.
  • Ballet , J.
  • Barbiellini , G.
  • Baring , M.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.
  • Cecchi , C.
  • Çelik , Ö.
  • Chekhtman , A.
  • Cheung , C.C.
  • Chiang , J.
  • Ciprini , S.
  • Claus , R.
  • Cognard , I.
  • Cohen-Tanugi , J.
  • Cominsky , L.R.
  • Conrad , J.
  • Cutini , S.
  • Dermer , C.D.
  • De Angelis , A.
  • De Palma , F.
  • Digel , S.W.
  • Do Couto E Silva , E.
  • Drell , P.S.
  • Dubois , R.
  • Dumora , D.
  • Espinoza , C.
  • Farnier , C.
  • Favuzzi , C.
  • Fegan , S.J.
  • Focke , W.B.
  • Fortin , P.
  • Frailis , M.
  • Fukazawa , Y.
  • Funk , S.
  • Fusco , P.
  • Gargano , F.
  • Gasparrini , D.
  • Gehrels , N.
  • Germani , S.
  • Giavitto , G.
  • Giebels , B.
  • Giglietto , N.
  • Giordano , F.
  • Glanzman , T.
  • Godfrey , G.
  • Grenier , I.A.
  • Grondin , M.-H.
  • Grove , J.E.
  • Guillemot , L.
  • Guiriec , S.
  • Hanabata , Y.
  • Harding , A.K.
  • Hayashida , M.
  • Hays , E.
  • Hughes , R.E.
  • Jackson , M.S.
  • Jóhannesson , G.
  • Johnson , A.S.
  • Johnson , T.J.
  • Johnson , W.N.
  • Kamae , T.
  • Katagiri , H.
  • Kataoka , J.
  • Katsuta , J.
  • Kawai , N.
  • Kerr , M.
  • Knödlseder , J.
  • Kocian , M.L.
  • Kramer , M.
  • Kuss , M.
  • Lande , J.
  • Latronico , L.
  • Lemoine-Goumard , M.
  • Longo , F.
  • Loparco , F.
  • Lott , B.
  • Lovellette , M.N.
  • Lubrano , P.
  • Lyne , A.G.
  • Madejski , G.M.
  • Makeev , A.
  • Mazziotta , M.N.
  • Mcenery , J.E.
  • Meurer , C.
  • Michelson , P.F.
  • Mitthumsiri , W.
  • Mizuno , T.
  • Monte , C.
  • Monzani , M.E.
  • Morselli , A.
  • Moskalenko , I.V.
  • Murgia , S.
  • Nakamori , T.
  • Nolan , P.L.
  • Norris , J.P.
  • Noutsos , A.
  • Nuss , E.
  • Ohsugi , T.
  • Omodei , N.
  • Orlando , E.
  • Ormes , J.F.
  • Paneque , D.
  • 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.
  • Rochester , L.S.
  • Rodriguez , A.Y.
  • Romani , R.W.
  • Roth , M.
  • Ryde , F.
  • Sadrozinski , H.F.-W.
  • Sanchez , D.
  • Sander , A.
  • Parkinson , P.M. Saz
  • Scargle , J.D.
  • Sgrò , C.
  • Siskind , E.J.
  • Smith , D.A.
  • Smith , P.D.
  • Spandre , G.
  • Spinelli , P.
  • Stappers , B.W.
  • Stecker , F.W.
  • Strickman , M.S.
  • Suson , D.J.
  • Tajima , H.
  • Takahashi , H.
  • Takahashi , T.
  • Tanaka , T.
  • Thayer , J.B.
  • Thayer , J.G.
  • Theureau , G.
  • Thompson , D.J.
  • Tibaldo , L.
  • Tibolla , O.
  • Torres , D.F.
  • Tosti , G.
  • Tramacere , A.
  • Uchiyama , Y.
  • Usher , T.L.
  • Vasileiou , V.
  • Venter , C.
  • Vilchez , N.
  • Vitale , V.
  • Waite , A.P.
  • Wang , P.
  • Winer , B.L.
  • Wood , K.S.
  • Yamazaki , R.
  • Ylinen , T.
  • Ziegler , M.
subjects:
  • Supernova Remnants -- Observations
  • Gamma Rays -- Observations
ispartof: Science, 2010, Vol.327(5969), pp.1103-1106
description: Recent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to approximately 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 x 10⁸ electron volts and 3 x10¹¹ 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 approximately 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. ; Includes references ; p. 1103-1106.
language: eng
source:
identifier: ISSN: 0036-8075
fulltext: fulltext
issn:
  • 00368075
  • 0036-8075
url: Link


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titleGamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
creatorAbdo , A.A. ; Ackermann , M. ; Ajello , M. ; Baldini , L. ; Ballet , J. ; Barbiellini , G. ; Baring , M.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. ; Cecchi , C. ; Çelik , Ö. ; Chekhtman , A. ; Cheung , C.C. ; Chiang , J. ; Ciprini , S. ; Claus , R. ; Cognard , I. ; Cohen-Tanugi , J. ; Cominsky , L.R. ; Conrad , J. ; Cutini , S. ; Dermer , C.D. ; De Angelis , A. ; De Palma , F. ; Digel , S.W. ; Do Couto E Silva , E. ; Drell , P.S. ; Dubois , R. ; Dumora , D. ; Espinoza , C. ; Farnier , C. ; Favuzzi , C. ; Fegan , S.J. ; Focke , W.B. ; Fortin , P. ; Frailis , M. ; Fukazawa , Y. ; Funk , S. ; Fusco , P. ; Gargano , F. ; Gasparrini , D. ; Gehrels , N. ; Germani , S. ; Giavitto , G. ; Giebels , B. ; Giglietto , N. ; Giordano , F. ; Glanzman , T. ; Godfrey , G. ; Grenier , I.A. ; Grondin , M.-H. ; Grove , J.E. ; Guillemot , L. ; Guiriec , S. ; Hanabata , Y. ; Harding , A.K. ; Hayashida , M. ; Hays , E. ; Hughes , R.E. ; Jackson , M.S. ; Jóhannesson , G. ; Johnson , A.S. ; Johnson , T.J. ; Johnson , W.N. ; Kamae , T. ; Katagiri , H. ; Kataoka , J. ; Katsuta , J. ; Kawai , N. ; Kerr , M. ; Knödlseder , J. ; Kocian , M.L. ; Kramer , M. ; Kuss , M. ; Lande , J. ; Latronico , L. ; Lemoine-Goumard , M. ; Longo , F. ; Loparco , F. ; Lott , B. ; Lovellette , M.N. ; Lubrano , P. ; Lyne , A.G. ; Madejski , G.M. ; Makeev , A. ; Mazziotta , M.N. ; Mcenery , J.E. ; Meurer , C. ; Michelson , P.F. ; Mitthumsiri , W. ; Mizuno , T. ; Monte , C. ; Monzani , M.E. ; Morselli , A. ; Moskalenko , I.V. ; Murgia , S. ; Nakamori , T. ; Nolan , P.L. ; Norris , J.P. ; Noutsos , A. ; Nuss , E. ; Ohsugi , T. ; Omodei , N. ; Orlando , E. ; Ormes , J.F. ; Paneque , D. ; 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. ; Rochester , L.S. ; Rodriguez , A.Y. ; Romani , R.W. ; Roth , M. ; Ryde , F. ; Sadrozinski , H.F.-W. ; Sanchez , D. ; Sander , A. ; Parkinson , P.M. Saz ; Scargle , J.D. ; Sgrò , C. ; Siskind , E.J. ; Smith , D.A. ; Smith , P.D. ; Spandre , G. ; Spinelli , P. ; Stappers , B.W. ; Stecker , F.W. ; Strickman , M.S. ; Suson , D.J. ; Tajima , H. ; Takahashi , H. ; Takahashi , T. ; Tanaka , T. ; Thayer , J.B. ; Thayer , J.G. ; Theureau , G. ; Thompson , D.J. ; Tibaldo , L. ; Tibolla , O. ; Torres , D.F. ; Tosti , G. ; Tramacere , A. ; Uchiyama , Y. ; Usher , T.L. ; Vasileiou , V. ; Venter , C. ; Vilchez , N. ; Vitale , V. ; Waite , A.P. ; Wang , P. ; Winer , B.L. ; Wood , K.S. ; Yamazaki , R. ; Ylinen , T. ; Ziegler , M.
ispartofScience, 2010, Vol.327(5969), pp.1103-1106
identifierISSN: 0036-8075
descriptionRecent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to approximately 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 x 10⁸ electron volts and 3 x10¹¹ 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 approximately 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. ; Includes references ; p. 1103-1106.
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titleGamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
descriptionRecent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to approximately 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 x 10⁸ electron volts and 3 x10¹¹ 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 approximately 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. ; Includes references ; p. 1103-1106.
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titleGamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
authorAbdo , A.A. ; Ackermann , M. ; Ajello , M. ; Baldini , L. ; Ballet , J. ; Barbiellini , G. ; Baring , M.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. ; Cecchi , C. ; Çelik , Ö. ; Chekhtman , A. ; Cheung , C.C. ; Chiang , J. ; Ciprini , S. ; Claus , R. ; Cognard , I. ; Cohen-Tanugi , J. ; Cominsky , L.R. ; Conrad , J. ; Cutini , S. ; Dermer , C.D. ; De Angelis , A. ; De Palma , F. ; Digel , S.W. ; Do Couto E Silva , E. ; Drell , P.S. ; Dubois , R. ; Dumora , D. ; Espinoza , C. ; Farnier , C. ; Favuzzi , C. ; Fegan , S.J. ; Focke , W.B. ; Fortin , P. ; Frailis , M. ; Fukazawa , Y. ; Funk , S. ; Fusco , P. ; Gargano , F. ; Gasparrini , D. ; Gehrels , N. ; Germani , S. ; Giavitto , G. ; Giebels , B. ; Giglietto , N. ; Giordano , F. ; Glanzman , T. ; Godfrey , G. ; Grenier , I.A. ; Grondin , M.-H. ; Grove , J.E. ; Guillemot , L. ; Guiriec , S. ; Hanabata , Y. ; Harding , A.K. ; Hayashida , M. ; Hays , E. ; Hughes , R.E. ; Jackson , M.S. ; Jóhannesson , G. ; Johnson , A.S. ; Johnson , T.J. ; Johnson , W.N. ; Kamae , T. ; Katagiri , H. ; Kataoka , J. ; Katsuta , J. ; Kawai , N. ; Kerr , M. ; Knödlseder , J. ; Kocian , M.L. ; Kramer , M. ; Kuss , M. ; Lande , J. ; Latronico , L. ; Lemoine-Goumard , M. ; Longo , F. ; Loparco , F. ; Lott , B. ; Lovellette , M.N. ; Lubrano , P. ; Lyne , A.G. ; Madejski , G.M. ; Makeev , A. ; Mazziotta , M.N. ; Mcenery , J.E. ; Meurer , C. ; Michelson , P.F. ; Mitthumsiri , W. ; Mizuno , T. ; Monte , C. ; Monzani , M.E. ; Morselli , A. ; Moskalenko , I.V. ; Murgia , S. ; Nakamori , T. ; Nolan , P.L. ; Norris , J.P. ; Noutsos , A. ; Nuss , E. ; Ohsugi , T. ; Omodei , N. ; Orlando , E. ; Ormes , J.F. ; Paneque , D. ; 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. ; Rochester , L.S. ; Rodriguez , A.Y. ; Romani , R.W. ; Roth , M. ; Ryde , F. ; Sadrozinski , H.F.-W. ; Sanchez , D. ; Sander , A. ; Parkinson , P.M. Saz ; Scargle , J.D. ; Sgrò , C. ; Siskind , E.J. ; Smith , D.A. ; Smith , P.D. ; Spandre , G. ; Spinelli , P. ; Stappers , B.W. ; Stecker , F.W. ; Strickman , M.S. ; Suson , D.J. ; Tajima , H. ; Takahashi , H. ; Takahashi , T. ; Tanaka , T. ; Thayer , J.B. ; Thayer , J.G. ; Theureau , G. ; Thompson , D.J. ; Tibaldo , L. ; Tibolla , O. ; Torres , D.F. ; Tosti , G. ; Tramacere , A. ; Uchiyama , Y. ; Usher , T.L. ; Vasileiou , V. ; Venter , C. ; Vilchez , N. ; Vitale , V. ; Waite , A.P. ; Wang , P. ; Winer , B.L. ; Wood , K.S. ; Yamazaki , R. ; Ylinen , T. ; Ziegler , M.
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6Baring , M.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.
26Cecchi , C.
27Çelik , Ö.
28Chekhtman , A.
29Cheung , C.C.
30Chiang , J.
31Ciprini , S.
32Claus , R.
33Cognard , I.
34Cohen-Tanugi , J.
35Cominsky , L.R.
36Conrad , J.
37Cutini , S.
38Dermer , C.D.
39De Angelis , A.
40De Palma , F.
41Digel , S.W.
42Do Couto E Silva , E.
43Drell , P.S.
44Dubois , R.
45Dumora , D.
46Espinoza , C.
47Farnier , C.
48Favuzzi , C.
49Fegan , S.J.
50Focke , W.B.
51Fortin , P.
52Frailis , M.
53Fukazawa , Y.
54Funk , S.
55Fusco , P.
56Gargano , F.
57Gasparrini , D.
58Gehrels , N.
59Germani , S.
60Giavitto , G.
61Giebels , B.
62Giglietto , N.
63Giordano , F.
64Glanzman , T.
65Godfrey , G.
66Grenier , I.A.
67Grondin , M.-H.
68Grove , J.E.
69Guillemot , L.
70Guiriec , S.
71Hanabata , Y.
72Harding , A.K.
73Hayashida , M.
74Hays , E.
75Hughes , R.E.
76Jackson , M.S.
77Jóhannesson , G.
78Johnson , A.S.
79Johnson , T.J.
80Johnson , W.N.
81Kamae , T.
82Katagiri , H.
83Kataoka , J.
84Katsuta , J.
85Kawai , N.
86Kerr , M.
87Knödlseder , J.
88Kocian , M.L.
89Kramer , M.
90Kuss , M.
91Lande , J.
92Latronico , L.
93Lemoine-Goumard , M.
94Longo , F.
95Loparco , F.
96Lott , B.
97Lovellette , M.N.
98Lubrano , P.
99Lyne , A.G.
100...
jtitleScience
toplevelpeer_reviewed
delivery
delcategoryRemote Search Resource
fulltextfulltext
addata
au
0Abdo, A.A.
1Ackermann, M.
2Ajello, M.
3Baldini, L.
4Ballet, J.
5Barbiellini, G.
6Baring, M.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.
26Cecchi, C.
27Çelik, Ö.
28Chekhtman, A.
29Cheung, C.C.
30Chiang, J.
31Ciprini, S.
32Claus, R.
33Cognard, I.
34Cohen-Tanugi, J.
35Cominsky, L.R.
36Conrad, J.
37Cutini, S.
38Dermer, C.D.
39de Angelis, A.
40de Palma, F.
41Digel, S.W.
42do Couto e Silva, E.
43Drell, P.S.
44Dubois, R.
45Dumora, D.
46Espinoza, C.
47Farnier, C.
48Favuzzi, C.
49Fegan, S.J.
50Focke, W.B.
51Fortin, P.
52Frailis, M.
53Fukazawa, Y.
54Funk, S.
55Fusco, P.
56Gargano, F.
57Gasparrini, D.
58Gehrels, N.
59Germani, S.
60Giavitto, G.
61Giebels, B.
62Giglietto, N.
63Giordano, F.
64Glanzman, T.
65Godfrey, G.
66Grenier, I.A.
67Grondin, M.-H.
68Grove, J.E.
69Guillemot, L.
70Guiriec, S.
71Hanabata, Y.
72Harding, A.K.
73Hayashida, M.
74Hays, E.
75Hughes, R.E.
76Jackson, M.S.
77Jóhannesson, G.
78Johnson, A.S.
79Johnson, T.J.
80Johnson, W.N.
81Kamae, T.
82Katagiri, H.
83Kataoka, J.
84Katsuta, J.
85Kawai, N.
86Kerr, M.
87Knödlseder, J.
88Kocian, M.L.
89Kramer, M.
90Kuss, M.
91Lande, J.
92Latronico, L.
93Lemoine-Goumard, M.
94Longo, F.
95Loparco, F.
96Lott, B.
97Lovellette, M.N.
98Lubrano, P.
99Lyne, A.G.
100...
atitleGamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
jtitleScience
addtitleGamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
risdate2010
volume327
issue5969
spage1103
epage1106
pages1103-1106
issn0036-8075
formatjournal
genrearticle
ristypeJOUR
notesIncludes references
abstractRecent observations of supernova remnants (SNRs) hint that they accelerate cosmic rays to energies close to approximately 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 x 10⁸ electron volts and 3 x10¹¹ 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 approximately 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.
pubAmerican Association for the Advancement of Science
orcidid0000-0002-0014-7809: 0000-0001-6885-7156
doi10.1126/science.1182787
eissn10959203
date2010-02-26