DIRECT EVIDENCE FOR HADRONIC COSMIC-RAY ACCELERATION IN THE SUPERNOVA REMNANT IC 443

被引：110

作者：

Tavani, M. ^{[1
,2
]}

Giuliani, A. ^{[3
]}

Chen, A. W. ^{[3
,4
]}

Argan, A. ^{[1
]}

Barbiellini, G. ^{[5
,6
]}

Bulgarelli, A. ^{[7
]}

Caraveo, P. ^{[3
]}

Cattaneo, P. W. ^{[8
]}

Cocco, V. ^{[1
]}

Contessi, T. ^{[3
]}

D'Ammando, F. ^{[1
,2
]}

Costa, E. ^{[1
]}

De Paris, G. ^{[1
]}

Del Monte, E. ^{[1
]}

Di Cocco, G. ^{[7
]}

Donnarumma, I. ^{[1
]}

Evangelista, Y. ^{[1
]}

Ferrari, A. ^{[4
,9
]}

Feroci, M. ^{[1
]}

Fuschino, F. ^{[7
]}

Galli, M. ^{[10
]}

Gianotti, F. ^{[7
]}

Labanti, C. ^{[7
]}

Lapshov, I. ^{[1
]}

Lazzarotto, F. ^{[1
]}

Lipari, P. ^{[11
]}

Longo, F. ^{[5
,6
]}

Marisaldi, M. ^{[7
]}

Mastropietro, M. ^{[12
]}

Mereghetti, S. ^{[3
]}

Morelli, E. ^{[7
]}

Moretti, E. ^{[5
,6
]}

Morselli, A. ^{[13
]}

Pacciani, L. ^{[1
]}

Pellizzoni, A. ^{[14
]}

Perotti, F. ^{[3
]}

Piano, G. ^{[1
,2
,13
]}

Picozza, P. ^{[2
,13
]}

Pilia, M. ^{[15
]}

Pucella, G. ^{[16
]}

Prest, M. ^{[15
]}

Rapisarda, M. ^{[16
]}

Rappoldi, A. ^{[8
]}

Scalise, E. ^{[1
]}

Rubini, A. ^{[1
]}

Sabatini, S. ^{[2
,13
]}

Striani, E. ^{[2
,13
]}

Soffitta, P. ^{[1
]}

Trifoglio, M. ^{[7
]}

Trois, A. ^{[1
]}

机构：

[1] INAF IASF Roma, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[3] INAF IASF Milano, I-20133 Milan, Italy

[4] CIFS Torino, I-10133 Turin, Italy

[5] Dipartimento Fis, I-34127 Trieste, Italy

[6] Ist Nazl Fis Nucl, I-34127 Trieste, Italy

[7] INAF IASF Bologna, I-40129 Bologna, Italy

[8] Ist Nazl Fis Nucl, I-27100 Pavia, Italy

[9] Univ Turin, Dipartimento Fis, Turin, Italy

[10] ENEA, I-40129 Bologna, Italy

[11] INFN Roma La Sapienza, I-00185 Rome, Italy

[12] CNR IMIP, Rome, Italy

[13] INFN Roma Tor Vergata, I-00133 Rome, Italy

[14] INAF Osserv Astron Cagliari, I-09012 Capoterra, Italy

[15] Univ Insubria, Dipartimento Fis, I-22100 Como, Italy

[16] ENEA Frascati, I-00044 Rome, Italy

[17] INAF IASF, Palermo, Italy

[18] ASI Sci Data Ctr, I-00044 Rome, Italy

[19] INAF Osserv Astron Roma, Monte Porzio Catone, Italy

[20] Agenzia Spaziale Italiana, I-00198 Rome, Italy

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2010年 / 710卷 / 02期

关键词：

cosmic rays; gamma rays: general; ISM: supernova remnants; supernovae: general; supernovae: individual (IC 443); AGILE SILICON TRACKER; X-RAY; PARTICLE-ACCELERATION; SHOCK ACCELERATION; ENERGY; EMISSION; IC-443; TEV; DISCOVERY; CONTINUUM;

D O I：

10.1088/2041-8205/710/2/L151

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The supernova remnant (SNR) IC 443 is an intermediate-age remnant well known for its radio, optical, X-ray, and gamma-ray energy emissions. In this Letter, we study the gamma-ray emission above 100 MeV from IC 443 as obtained by the AGILE satellite. A distinct pattern of diffuse emission in the energy range 100 MeV-3 GeV is detected across the SNR with its prominent maximum (source "A") localized in the northeastern shell with a flux F = (47 +/- 10) x 10(-8) photons cm(-2) s(-1) above 100 MeV. This location is the site of the strongest shock interaction between the SNR blast wave and the dense circumstellar medium. Source "A" is not coincident with the TeV source located 0.4. away and associated with a dense molecular cloud complex in the SNR central region. From our observations, and from the lack of detectable diffuse TeV emission from its northeastern rim, we demonstrate that electrons cannot be the main emitters of gamma rays in the range 0.1-10 GeV at the site of the strongest SNR shock. The intensity, spectral characteristics, and location of the most prominent gamma-ray emission together with the absence of cospatial detectable TeV emission are consistent only with a hadronic model of cosmic-ray acceleration in the SNR. A high-density molecular cloud (cloud "E") provides a remarkable "target" for nucleonic interactions of accelerated hadrons; our results show enhanced gamma-ray production near the molecular cloud/shocked shell interaction site. IC 443 provides the first unambiguous evidence of cosmic-ray acceleration by SNRs.

引用

页码：L151 / L155

页数：5

共 48 条

[11] Radio to gamma-ray emission from shell-type supernova remnants: Predictions from nonlinear shock acceleration models [J].

Baring, MG ;

Ellison, DC ;

Reynolds, SP ;

Grenier, IA ;

Goret, P .

ASTROPHYSICAL JOURNAL, 1999, 513 (01) :311-338

[12] Maximum energy of cosmic rays accelerated by supernova shocks [J].

Berezhko, EG .

ASTROPARTICLE PHYSICS, 1996, 5 (3-4) :367-378

[13] Theory of cosmic ray production in the supernova remnant RX J1713.7-3946 [J].

Berezhko, EG ;

Völk, HJ .

ASTRONOMY & ASTROPHYSICS, 2006, 451 (03) :981-990

[14] Kinetic theory of cosmic rays and gamma rays in supernova remnants .1. Uniform interstellar medium [J].

Berezhko, EG ;

Volk, HJ .

ASTROPARTICLE PHYSICS, 1997, 7 (03) :183-202

[15] PARTICLE-ACCELERATION AT ASTROPHYSICAL SHOCKS - A THEORY OF COSMIC-RAY ORIGIN [J].

BLANDFORD, R ;

EICHLER, D .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1987, 154 (01) :1-75

[16] Beyond the myth of the supernova-remnant origin of cosmic rays [J].

Butt, Yousaf .

NATURE, 2009, 460 (7256) :701-704

[17] COSMIC-RAY CONFINEMENT IN THE GALAXY [J].

CESARSKY, CJ .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1980, 18 :289-319

[18] STRUCTURE AND KINEMATICS OF DENSE GAS ASSOCIATED WITH THE SUPERNOVA REMNANT IC-443 [J].

DICKMAN, RL ;

SNELL, RL ;

ZIURYS, LM ;

HUANG, YL .

ASTROPHYSICAL JOURNAL, 1992, 400 (01) :203-213

[19]

DRURY LO, 1994, ASTRON ASTROPHYS, V287, P959

[20]

Drury LO, 1996, ASTRON ASTROPHYS, V309, P1002

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