Journal articles
Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun
A. A. Abdo
Markus Ackermann
Marco Ajello
Luca Baldini
Jean Ballet
1
Guido Barbiellini
D. Bastieri
K. Bechtol
R. Bellazzini
B. Berenji
E. Bonamente
A. W. Borgland
A. Bouvier
J. Bregeon
A. Brez
M. Brigida
Pascal Bruel
2
R. Buehler
S. Buson
G. A. Caliandro
R. A. Cameron
P. A. Caraveo
J. M. Casandjian
1
C. Cecchi
E. Charles
A. Chekhtman
J. Chiang
S. Ciprini
R. Claus
J. Cohen-Tanugi
3
J. Conrad
S. Cutini
A. de Angelis
F. de Palma
C. D. Dermer
S. W. Digel
E. Do Couto E Silva
P. S. Drell
R. Dubois
C. Favuzzi
S. J. Fegan
2
W. B. Focke
P. Fortin
2
M. Frailis
S. Funk
P. Fusco
F. Gargano
D. Gasparrini
N. Gehrels
S. Germani
N. Giglietto
F. Giordano
M. Giroletti
T. Glanzman
G. Godfrey
I. A. Grenier
1
L. Grillo
S. Guiriec
D. Hadasch
E. Hays
R. E. Hughes
G. Iafrate
G. Jóhannesson
A. S. Johnson
T. J. Johnson
T. Kamae
H. Katagiri
J. Kataoka
J. Knödlseder
4
M. Kuss
J. Lande
L. Latronico
S.-H. Lee
A. M. Lionetto
F. Longo
F. Loparco
B. Lott
5
M. N. Lovellette
P. Lubrano
A. Makeev
M. N. Mazziotta
J. E. Mcenery
J. Mehault
3
P. F. Michelson
W. Mitthumsiri
T. Mizuno
A. A. Moiseev
C. Monte
M. E. Monzani
A. Morselli
I. V. Moskalenko
S. Murgia
T. Nakamori
M. Naumann-Godo
1
P. L. Nolan
J. P. Norris
E. Nuss
3
T. Ohsugi
A. Okumura
N. Omodei
E. Orlando
J. F. Ormes
M. Ozaki
D. Paneque
V. Pelassa
3
M. Pesce-Rollins
M. Pierbattista
1
F. Piron
3
T.A. Porter
S. Rainò
R. Rando
M. Razzano
A. Reimer
O. Reimer
T. Reposeur
5
S. Ritz
H. F.-W. Sadrozinski
T. L. Schalk
C. Sgrò
G. H. Share
E. J. Siskind
P. D. Smith
G. Spandre
P. Spinelli
M. S. Strickman
A. W. Strong
H. Takahashi
T. Tanaka
J. G. Thayer
J. B. Thayer
D. J. Thompson
L. Tibaldo
D. F. Torres
G. Tosti
A. Tramacere
E. Troja
Y. Uchiyama
T. L. Usher
J. Vandenbroucke
V. Vasileiou
3
G. Vianello
N. Vilchez
4
V. Vitale
A. E. Vladimirov
A. P. Waite
P. Wang
B. L. Winer
K. S. Wood
Z. Yang
M. Ziegler
Jean Ballet 1
Author Employer institution : Département de Physique Nucléaire (ex SPhN)
Guido Barbiellini
Author
D. Bastieri
Author
K. Bechtol
Author
A. Bouvier
Author
J. Bregeon
Author IdHAL : johan-bregeon arXiv : https://arxiv.org/a/bregeon ORCID : https://orcid.org/0000-0002-6790-5328
A. Brez
Author
M. Brigida
Author
Pascal Bruel 2
Author Employer institution : Centre National de la Recherche Scientifique
R. Buehler
Author
S. Buson
Author
G. A. Caliandro
Author
R. Claus
Author
J. Cohen-Tanugi 3
Author IdHAL : johann-cohen-tanugi arXiv : https://arxiv.org/a/johannct ORCID : https://orcid.org/0000-0001-9022-4232
J. Conrad
Author
S. Cutini
Author
J. Knödlseder 4
Author IdHAL : jurgen-knodlseder ORCID : https://orcid.org/0000-0002-0014-7809
M. Kuss
Author
J. Lande
Author
L. Latronico
Author
B. Lott 5
Author IdHAL : benoit-lott ORCID : https://orcid.org/0000-0003-2186-9242
M. N. Lovellette
Author
P. Lubrano
Author
A. Makeev
Author
V. Pelassa 3
Author
M. Pesce-Rollins
Author
M. Pierbattista 1
Author
F. Piron 3
Author IdHAL : frederic-piron ORCID : https://orcid.org/0000-0001-6885-7156
A. Reimer
Author
O. Reimer
Author
T. Reposeur 5
Author IdHAL : thierry-reposeur ORCID : https://orcid.org/0000-0001-6939-3429
S. Ritz
Author
Z. Yang
Author
M. Ziegler
Author
1
AIM (UMR_7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation (AIM - UMR 7158 - UMR E 9005,
ex "Astrophysique Interactions Multi-échelles",
Service d'astrophysique,
CEA/Saclay,
Orme des Merisiers
F-91191 GIF SUR YVETTE CEDEX - France)
- CNRS - Centre National de la Recherche Scientifique : UMR_7158 (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : UMR_E_9005 (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- UPD7 - Université Paris Diderot - Paris 7 : UMR_7158 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
2
LLR - Laboratoire Leprince-Ringuet (Route de Saclay - 91128 Palaiseau Cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- X - École polytechnique (École polytechnique, 91128 Palaiseau Cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7638 (France)
3
LUPM - Laboratoire Univers et Particules de Montpellier (Université de Montpellier Place Eugène Bataillon - CC 72 34095 Montpellier Cédex 05 - France)
- UM - Université de Montpellier (163 rue Auguste Broussonnet - 34090 Montpellier - France)
- UM2 - Université Montpellier 2 - Sciences et Techniques (Place Eugène Bataillon - 34095 Montpellier cedex 5 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5299 (France)
4
IRAP - Institut de recherche en astrophysique et planétologie (9 avenue Colonel Roche 31028 Toulouse - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5277 (France)
- OMP - Observatoire Midi-Pyrénées (14 avenue Edouard Belin, 31400 TOULOUSE - France)
- IRD - Institut de Recherche pour le Développement (Siège Le Sextant 44, bd de Dunkerque CS 90009 13572 Marseille cedex 02 - France)
- CNRS - Centre National de la Recherche Scientifique (France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- CNES - Centre National d'Études Spatiales [Toulouse] (18 avenue Edouard Belin 31401 Toulouse - France)
- Météo France (France)
- UT3 - Université Toulouse III - Paul Sabatier (118 route de Narbonne - 31062 Toulouse - France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR5277 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
5
CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan (Chemin du Solarium - BP 120 - 33175 Gradignan Cedex - France)
- Université Sciences et Technologies - Bordeaux 1 (351 cours de la Libération - 33405 Talence cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5797 (France)
Abstract : We report the detection of high-energy gamma rays from the quiescent Sun with the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope (Fermi) during the first 18 months of the mission. These observations correspond to the recent period of low solar activity when the emission induced by cosmic rays is brightest. For the first time, the high statistical significance of the observations allows clear separation of the two components: the point-like emission from the solar disk due to cosmic ray cascades in the solar atmosphere, and extended emission from the inverse Compton scattering of cosmic ray electrons on solar photons in the heliosphere. The observed integral flux (>100 MeV) from the solar disk is (4.6 +/- 0.2 [statistical error] +1.0/-0.8 [systematic error]) x10^{-7} cm^{-2} s^{-1}, which is ~7 times higher than predicted by the "nominal" model of Seckel et al. (1991). In contrast, the observed integral flux (>100 MeV) of the extended emission from a region of 20 deg radius centered on the Sun, but excluding the disk itself, (6.8 +/-0.7 [stat.] +0.5/-0.4 [syst.]) x10^{-7} cm^{-2} s^{-1}, along with the observed spectrum and the angular profile, are in good agreement with the theoretical predictions for the inverse Compton emission.
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Journal articles
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http://hal.in2p3.fr/in2p3-00608701
Contributor : Virginie Mas <>
Submitted on : Wednesday, July 13, 2011 - 10:28:37 PM
Last modification on : Friday, December 18, 2020 - 12:54:07 PM
Contributor : Virginie Mas <>
Submitted on : Wednesday, July 13, 2011 - 10:28:37 PM
Last modification on : Friday, December 18, 2020 - 12:54:07 PM
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- HAL Id : in2p3-00608701, version 1
- ARXIV : 1104.2093
- DOI : 10.1088/0004-637X/734/2/116
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Citation
A. A. Abdo, Markus Ackermann, Marco Ajello, Luca Baldini, Jean Ballet, et al.. Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun. The Astrophysical Journal, American Astronomical Society, 2011, 734, pp.116. ⟨10.1088/0004-637X/734/2/116⟩. ⟨in2p3-00608701⟩
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