Search for VHE gamma rays from SS433/W50 with the CANGAROO-II telescope

被引：11

作者：

Hayashi, Sei. ^{[1
]}

Kajino, F. ^{[1
]}

Naito, T. ^{[2
]}

Asahara, A. ^{[3
]}

Bicknell, G. V. ^{[4
]}

Clay, R. W. ^{[5
]}

Doi, Y. ^{[6
]}

Edwards, P. G. ^{[7
]}

Enomoto, R. ^{[8
]}

Gunji, S. ^{[6
]}

Hara, S. ^{[9
]}

Hara, T. ^{[2
]}

Hattori, T. ^{[10
]}

Itoh, C. ^{[9
]}

Kabuki, S. ^{[3
]}

Katagiri, H. ^{[11
]}

Kawachi, A. ^{[10
]}

Kifune, T. ^{[8
]}

Ksenofontov, L. T. ^{[8
]}

Kubo, H. ^{[3
]}

Kurihara, T. ^{[10
]}

Kurosaka, R. ^{[8
]}

Kushida, J. ^{[10
]}

Matsubara, Y. ^{[12
]}

Miyashita, Y. ^{[10
]}

Mizumoto, Y. ^{[13
]}

Mori, M. ^{[8
]}

Mori, H. ^{[10
]}

Muraishi, H. ^{[14
]}

Muraki, Y. ^{[1
]}

Nakase, T. ^{[10
]}

Nishida, D. ^{[3
]}

Nishijima, K. ^{[10
]}

Ohishi, M. ^{[8
]}

Okumura, K. ^{[8
]}

Patterson, J. R. ^{[5
]}

Protheroe, R. J. ^{[5
]}

Sakamoto, N. ^{[6
]}

Sakurazawa, K. ^{[15
]}

Swaby, D. L. ^{[5
]}

Tanimori, T. ^{[3
]}

Tanimura, H. ^{[3
]}

Thornton, G. ^{[5
]}

Tokanai, F. ^{[6
]}

Tsuchiya, K. ^{[16
]}

Uchida, T. ^{[8
]}

Watanabe, S. ^{[3
]}

Yamaoka, T. ^{[1
]}

Yanagita, S. ^{[17
]}

Yoshida, T. ^{[17
]}

机构：

[1] Konan Univ, Dept Phys, Kobe, Hyogo 6588501, Japan

[2] Yamanashi Gakuin Univ, Fac Management Informat, Yamanashi 4008575, Japan

[3] Kyoto Univ, Dept Phys, Grad Sch Sci, Sakyo Ku, Kyoto 6068502, Japan

[4] Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia

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

[6] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[7] Australia Telescope Natl Facil, CSIRO, Paul Wild Observ, Narrabri, NSW 2390, Australia

[8] Univ Tokyo, Inst Cosm Ray Res, Chiba 2778582, Japan

[9] Ibaraki Prefectural Univ Hlth Sci, Ami, Ibaraki 000394, Japan

[10] Tokai Univ, Dept Phys, Kanagawa 2591292, Japan

[11] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan

[12] Nagoya Univ, Solar Terr Environm Lab, Aichi 4648602, Japan

[13] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[14] Kitasato Univ, Sch Allied Hlth Sci, Kanagawa 2288555, Japan

[15] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[16] Natl Res Inst Police Sci, Kashiwa, Chiba 2770882, Japan

[17] Ibaraki Univ, Fac Sci, Mito, Ibaraki 3108512, Japan

来源：

ASTROPARTICLE PHYSICS | 2009年 / 32卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

Gamma rays: observations; ISM:; individual; (W50); jets; Stars: individual (SS433); CRAB-NEBULA; RADIO OBSERVATIONS; SS-433; W50; SYSTEM; KINEMATICS; ASTRONOMY; SPECTRUM; LOBES; JET;

D O I：

10.1016/j.astropartphys.2009.06.006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

SS433, located at the center of the supernova remnant W50, is a close proximity binary system consisting of a compact star and a normal star. jets of material are directed outwards from the vicinity of the compact star symmetrically to the east and west. Non-thermal hard X-ray emission is detected from lobes lying on both sides. Shock accelerated electrons are expected to generate VHE gamma rays through the inverse-Compton process in the lobes. Observations of the western X-ray lobe region of SS433/W50 system have been performed to detect VHE gamma rays using the 10 m CANGAROO-II telescope in August and September, 2001, and July and September, 2002. The total observation times are 85.2 h for ON Source, and 80.8 h for OFF source data. No significant excess of VHE gamma rays has been found at three regions of the western X-ray lobe of SS433/W50 system. We have derived 99% confidence level upper limits to the fluxes of gamma rays and have set constraints on the strengths of the magnetic fields assuming the synchrotron/inverse-Compton model for the wide energy range of photon spectrum from radio to TeV. The derived lower limits are 4.3 mu G for the center of the brightest X-ray emission region and 6.3 mu G for the far end from SS433 in the western X-ray lobe. In addition, we suggest that the spot-like X-ray emission may provide a major contribution to the hardest X-ray spectrum in the lobe. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：112 / 119

页数：8

共 20 条

[1] Gamma-ray emission towards SS433/W50
Bordas, Pol
Sun, Xiaona
Yang, Ruizhi
Kafexhiu, Ervin
Aharonian, Felix A.
[J]. HIGH ENERGY GAMMA-RAY ASTRONOMY, 2017, 1792
[2] The galactic microquasar W50/SS433 system
Safi-Harb, S
Durouchoux, P
Petre, R
[J]. ASTROPHYSICS AND SPACE SCIENCE, 2001, 276 (Suppl 1) : 133 - 134
[3] GAMMA-RAYS FROM SS 433 AND ITS INTERACTION WITH THE W50 NEBULA
Bordas, Pol
Bosch-Ramon, Valenti
Maria Paredes, Josep
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2010, 19 (06): : 749 - 755
[4] DETECTION OF PERSISTENT GAMMA-RAY EMISSION TOWARD SS433/W50
Bordas, P.
Yang, R.
Kafexhiu, E.
Aharonian, F.
[J]. ASTROPHYSICAL JOURNAL LETTERS, 2015, 807 (01)
[5] X-ray lobes of W50/SS433 system
Namiki, M
Kawai, N
Kotanil, T
Yamauchi, S
Brinkmann, W
[J]. BROAD BAND X-RAY SPECTRA OF COSMIC SOURCES, 2000, 25 (3-4): : 709 - 712
[6] Tentative evidence of spatially extended GeV emission from SS433/W50
Sun, Xiao-Na
Yang, Rui-Zhi
Liu, Bing
Xi, Shao-Qiang
Wang, Xiang-Yu
[J]. Astronomy and Astrophysics, 2019, 626
[7] Constraints on particle acceleration in SS433/W50 from MAGIC and HESS observations
Ahnen, M. L.
Ansoldi, S.
Antonelli, L. A.
Arcaro, C.
Babie, A.
Banerjee, B.
Bangale, P.
de Almeida, U. Barres
Barrio, J. A.
Gonzalez, J. Becerra
Bednarek, W.
Bernardini, E.
Berti, A.
Biasuzzi, B.
Biland, A.
Blanch, O.
Bonnefoy, S.
Bonnoli, G.
Borracci, F.
Carosi, R.
Carosi, A.
Chatterjee, A.
Colin, P.
Colombo, E.
Contreras, J. L.
Cortina, J.
Covino, S.
Cumani, P.
Da Vela, P.
Dazzi, F.
De Angelis, A.
De Lotto, B.
Wilhelmi, E. de Ona
Di Pierro, F.
Doert, M.
Dominguez, A.
Prester, D. Dominis
Dorner, D.
Doro, M.
Einecke, S.
Glawion, D. Eisenacher
Elsaesser, D.
Engelkemeier, M.
Ramazani, V. Fallah
Fernandez-Barra, A.
Fidalgo, D.
Fonseca, M. V.
Font, L.
Fruck, C.
Galindo, D.
[J]. ASTRONOMY & ASTROPHYSICS, 2018, 612
[8] Tentative evidence of spatially extended GeV emission from SS433/W50
Sun, Xiao-Na
Yang, Rui-Zhi
Liu, Bing
Xi, Shao-Qiang
Wang, Xiang-Yu
[J]. ASTRONOMY & ASTROPHYSICS, 2019, 626
[9] Detection of Sub-TeV gamma-rays from the galactic center with the CANGAROO-II telescope
Tsuchiya, K
[J]. High Energy Gamma-Ray Astronomy, 2005, 745 : 403 - 408
[10] Search for TeV gamma-rays from 3EG J1234-1318 with the Cangaroo-II telescope
Hattori, T
Nishijima, K
[J]. ASTROPHYSICS AND SPACE SCIENCE, 2005, 297 (1-4) : 327 - 334

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