Diffuse Galactic gamma-ray emission with HESS

被引：61

作者：

Abramowski, A. ^{[1
,3
,33
]}

Aharonian, F. ^{[2
,4
]}

Benkhali, F. Ait ^{[2
]}

Akhperjanian, A. G. ^{[4
,5
]}

Anguener, E. O. ^{[6
]}

Backes, M. ^{[7
]}

Balenderan, S. ^{[8
]}

Balzer, A. ^{[9
]}

Barnacka, A. ^{[10
]}

Becherini, Y. ^{[11
]}

Tjus, J. Becker ^{[12
]}

Berge, D. ^{[9
,13
]}

Bernhard, S. ^{[14
]}

Bernloehr, K. ^{[2
,6
]}

Birsin, E. ^{[6
]}

Biteau, J. ^{[15
]}

Boettcher, M. ^{[16
]}

Boisson, C. ^{[17
]}

Bolmont, J. ^{[18
]}

Bordas, P. ^{[19
]}

Bregeon, J. ^{[20
]}

Brun, F. ^{[21
]}

Brun, P.

Bryan, M. ^{[9
]}

Bulik, T. ^{[22
]}

Carrigan, S. ^{[2
]}

Casanova, S. ^{[2
,23
]}

Chadwick, P. M. ^{[8
]}

Chakraborty, N. ^{[2
]}

Chalme-Calvet, R. ^{[18
]}

Chaves, R. C. G. ^{[20
]}

Chretien, M. ^{[18
]}

Colafrancesco, S. ^{[24
]}

Cologna, G. ^{[25
]}

Conrad, J. ^{[26
]}

Couturier, C. ^{[18
]}

Cui, Y. ^{[19
]}

Davids, I. D. ^{[7
,16
]}

Degrange, B. ^{[15
]}

Deil, C. ^{[2
]}

dewilt, P. ^{[27
]}

Djannati-Atai, A. ^{[28
]}

Domainko, W. ^{[2
]}

Donath, A. ^{[2
]}

Drury, L. O'C. ^{[3
]}

Dubus, G. ^{[29
]}

Dutson, K. ^{[30
]}

Dyks, J. ^{[31
]}

Dyrda, M. ^{[23
]}

Edwards, T. ^{[2
]}

机构：

[1] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[2] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[3] Dublin Inst Adv Studies, Dublin 2, Ireland

[4] Natl Acad Sci Republ Armenia, Yerevan 0019, Armenia

[5] Yerevan Phys Inst, Yerevan 375036, Armenia

[6] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[7] Univ Namibia, Dept Phys, Windhoek, Namibia

[8] Univ Durham, Dept Phys, Durham DH1 3LE, England

[9] Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, NL-1098 XH Amsterdam, Netherlands

[10] Uniwersytet Jagiellonski, Obserwatorium Astron, PL-30244 Krakow, Poland

[11] Linnaeus Univ, Dept Phys & Elect Engn, S-35195 Vaxjo, Sweden

[12] Ruhr Univ Bochum, Lehrstuhl Weltraum & Astrophys 4, Inst Theoret Phys, D-44780 Bochum, Germany

[13] Univ Amsterdam, Inst High Energy Phys, NL-1098 XH Amsterdam, Netherlands

[14] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria

[15] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[16] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa

[17] Univ Paris Diderot, CNRS, Observ Paris, LUTH, F-92190 Meudon, France

[18] Univ Paris 07, Univ Paris 06, CNRS, IN2P3,LPNHE, F-75252 Paris 5, France

[19] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany

[20] Univ Montpellier 2, CNRS, IN2P3, Lab Univers & Particules Montpellier, F-34095 Montpellier 5, France

[21] CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France

[22] Univ Warsaw, Astron Observ, PL-00478 Warsaw, Poland

[23] Inst Fizyki Jadrowej PAN, PL-31342 Krakow, Poland

[24] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa

[25] Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany

[26] Stockholm Univ, Albanova Univ Ctr, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden

[27] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia

[28] Univ Paris Diderot, CEA Irfu, APC, CNRS,IN2P3,Observ Paris,Sorbonne Paris Cite, F-75205 Paris 13, France

[29] Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France

[30] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[31] Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland

[32] Univ Potsdam, Inst Phys & Astron, D-14476 Golm, Germany

[33] Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France

[34] DESY, D-15738 Zeuthen, Germany

[35] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France

[36] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[37] Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Ctr Astron, PL-87100 Torun, Poland

[38] Univ Free State, Dept Phys, ZA-9300 Bloemfontein, South Africa

[39] Univ Amsterdam, GRAPPA, Inst High Energy Phys, NL-1098 XH Amsterdam, Netherlands

[40] Nagoya Univ, Dept Astrophys, Chikusa Ku, Nagoya, Aichi 4648602, Japan

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 12期

基金：

新加坡国家研究基金会; 英国科学技术设施理事会;

关键词：

LARGE-AREA TELESCOPE; COSMIC-RAYS; RADIATION;

D O I：

10.1103/PhysRevD.90.122007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Diffuse gamma-ray emission is the most prominent observable signature of celestial cosmic-ray interactions at high energies. While already being investigated at GeVenergies over several decades, assessments of diffuse gamma-ray emission at TeVenergies remain sparse. After completion of the systematic survey of the inner Galaxy, the H.E.S.S. experiment is in a prime position to observe large-scale diffuse emission at TeVenergies. Data of the H.E.S.S. Galactic Plane Survey are investigated in regions off known gamma-ray sources. Corresponding gamma-ray flux measurements were made over an extensive grid of celestial locations. Longitudinal and latitudinal profiles of the observed gamma-ray fluxes show characteristic excess emission not attributable to known gamma-ray sources. For the first time large-scale gamma-ray emission along the Galactic plane using imaging atmospheric Cherenkov telescopes has been observed. While the background subtraction technique limits the ability to recover modest variation on the scale of the H.E.S.S. field of view or larger, which is characteristic of the inverse Compton scatter-induced Galactic diffuse emission, contributions of neutral pion decay as well as emission from unresolved gamma-ray sources can be recovered in the observed signal to a large fraction. Calculations show that the minimum gamma-ray emission from pi(0) decay represents a significant contribution to the total signal. This detection is interpreted as a mix of diffuse Galactic gamma-ray emission and unresolved sources.

引用

页数：8

共 50 条

[1] DIFFUSE GALACTIC GAMMA-RAY EMISSION
BLOEMEN, H
[J]. ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1989, 27 : 469 - 516
[2] Diffuse galactic gamma-ray continuum emission
Strong, AW
[J]. SPACE SCIENCE REVIEWS, 1996, 76 (3-4) : 205 - 230
[3] Diffuse Galactic soft gamma-ray emission
Boggs, SE
Lin, RP
Slassi-Sennou, S
Coburn, W
Pelling, RM
[J]. ASTROPHYSICAL JOURNAL, 2000, 544 (01): : 320 - 329
[4] Galactic diffuse gamma-ray emission at TeV energy
Neronov, A.
Semikoz, D.
[J]. ASTRONOMY & ASTROPHYSICS, 2020, 633
[5] The pulsar contribution to the diffuse Galactic gamma-ray emission
Pohl, M
Kanbach, G
Hunter, SD
Jones, BB
[J]. ASTROPHYSICAL JOURNAL, 1997, 491 (01): : 159 - 164
[6] ORIGIN OF THE DIFFUSE GALACTIC GAMMA-RAY EMISSION AT LOW AND MEDIUM GAMMA-RAY ENERGIES
SACHER, W
SCHONFELDER, V
[J]. SPACE SCIENCE REVIEWS, 1983, 36 (03) : 249 - 266
[7] COSMIC-RAY SPECTRA AND GALACTIC DIFFUSE GAMMA-RAY EMISSION
DOGIEL, VA
URYSON, AV
[J]. ASTRONOMY & ASTROPHYSICS, 1988, 197 (1-2) : 335 - 344
[8] Diffuse gamma-ray emission of the galactic disk and Galactic cosmic-ray spectra
Satyendra, Thoudam
[J]. Proceedings of the 29th International Cosmic Ray Conference, Vol 4: OG 2.1, 2.2 & 2.3, 2005, : 35 - 38
[9] A new determination of the diffuse galactic and extragalactic gamma-ray emission
Strong, AW
Moskalenko, IV
Reimer, O
[J]. High Energy Gamma-Ray Astronomy, 2005, 745 : 585 - 590
[10] Source population synthesis and the Galactic diffuse gamma-ray emission
A. W. Strong
[J]. Astrophysics and Space Science, 2007, 309 : 35 - 41

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