MAGIC observations of the microquasar V404 Cygni during the 2015 outburst

被引：10

作者：

Ahnen, M. L. ^{[1
]}

Ansoldi, S. ^{[1
,4
]}

Antonelli, L. A. ^{[5
]}

Arcaro, C. ^{[6
,7
]}

Babic, A. ^{[8
]}

Banerjee, B. ^{[9
]}

Bangale, P. ^{[10
]}

de Almeida, U. Barres ^{[10
]}

Barrio, J. A. ^{[11
]}

Becerra Gonzalez, J. ^{[12
,13
]}

Bednarek, W. ^{[14
]}

Bernardini, E. ^{[15
,16
]}

Berti, A. ^{[2
,3
,17
]}

Biasuzzi, B. ^{[2
,3
]}

Biland, A. ^{[1
]}

Blanch, O. ^{[4
]}

Bonnefoy, S. ^{[11
]}

Bonnoli, G. ^{[18
,19
]}

Carosi, R. ^{[18
,19
]}

Carosi, A. ^{[5
]}

Chatterjee, A. ^{[9
]}

Colin, P. ^{[10
]}

Colombo, E. ^{[12
,13
]}

Contreras, J. L. ^{[11
]}

Cortina, J. ^{[4
]}

Covino, S. ^{[5
]}

Cumani, P. ^{[4
]}

Da Vela, P. ^{[18
,19
]}

Dazzi, F. ^{[5
]}

De Angelis, A. ^{[6
,7
]}

De Lotto, B. ^{[2
,3
]}

de Ona Wilhelmi, E. ^{[20
]}

Di Pierro, F. ^{[6
,7
]}

Doert, M. ^{[21
]}

Dominguez, A. ^{[11
]}

Prester, D. Dominis ^{[8
]}

Dorner, D. ^{[22
]}

Doro, M. ^{[6
,7
]}

Einecke, S. ^{[21
]}

Glawion, D. Eisenacher ^{[22
]}

Elsaesser, D. ^{[21
]}

Engelkemeier, M. ^{[21
]}

Ramazani, V. Fallah ^{[23
,24
]}

Fernandez-Barral, A. ^{[4
]}

Fidalgo, D. ^{[11
]}

Fonseca, M. V. ^{[11
]}

Font, L. ^{[25
,26
]}

Fruck, C. ^{[10
]}

Galindo, D. ^{[27
]}

Garcia Lopez, R. J. ^{[12
,13
]}

机构：

[1] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland

[2] Univ Udine, I-33100 Udine, Italy

[3] INFN Trieste, I-33100 Udine, Italy

[4] Barcelona Inst Sci & Technol, IFAE, Campus UAB, E-08193 Bellaterra, Barcelona, Spain

[5] INAF Natl Inst Astrophys, I-00136 Rome, Italy

[6] Univ Padua, I-35131 Padua, Italy

[7] INFN, I-35131 Padua, Italy

[8] Univ Osijek, Univ Zagreb FER, Croatian MAGIC Consortium, Rudjer Boskov Inst,Univ Rijeka,Univ Split FESB, Split 21000, Croatia

[9] Saha Inst Nucl Phys, 1 AF Bidhannagar,Sect 1, Kolkata 700064, India

[10] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[11] Univ Complutense, Dept Fis Atom, Fac Ciencias Fis, E-28040 Madrid, Spain

[12] Inst Astrofis Canarias, E-38200 Tenerife, Spain

[13] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain

[14] Univ Lodz, Div Astrophys, PL-90236 Lodz, Poland

[15] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany

[16] Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany

[17] Univ Trieste, Trieste, Italy

[18] Univ Siena, I-53100 Siena, Italy

[19] INFN Pisa, Dipartimento Fis, I-53100 Siena, Italy

[20] Inst Space Sci CSIC IEEC, E-08193 Barcelona, Spain

[21] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

[22] Univ Wurzburg, Fak Phys & Astron, D-97074 Wurzburg, Germany

[23] Univ Turku, Tuorla Observ, Finnish MAGIC Consortium, FI-21500 Piikkio, Finland

[24] Univ Oulu, Astron Div, FI-21500 Piikkio, Finland

[25] Univ Autonoma Barcelona, Dept Fis, Unitat Fis Radiac, E-08193 Bellaterra, Spain

[26] Univ Autonoma Barcelona, CERES IEEC, E-08193 Bellaterra, Spain

[27] Univ Barcelona, ICC, IEEC UB, E-08028 Barcelona, Spain

[28] Univ Tokyo, Dept Phys, ICRR, Japanese MAGIC Consortium, Kyoto 6068502, Japan

[29] Univ Tokushima, Tokai Univ, Kyoto Univ, Hakubi Ctr, Kyoto 6068502, Japan

[30] Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria

[31] Finnish Ctr Astron ESO FINCA, Turku, Finland

[32] Univ Pisa, I-56126 Pisa, Italy

[33] INFN Pisa, I-56126 Pisa, Italy

[34] ICREA, E-08193 Barcelona, Spain

[35] Inst Space Sci CSIC IEEC, E-08193 Barcelona, Spain

[36] Univ Paris Diderot, Lab AIM, CEA, IRFU,CNRS,INSU, FR-91191 Gif Sur Yvette, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 471卷 / 02期

关键词：

stars: individual: V404 Cygni (V404 Cyg); gamma-rays: general; X-rays: binaries; GAMMA-RAY EMISSION; BLACK-HOLE; BINARY; MODEL; MASS; ACCRETION;

D O I：

10.1093/mnras/stx1690

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The microquasar V404 Cygni underwent a series of outbursts in 2015, June 15-31, during which its flux in hard X-rays (20-40 keV) reached about 40 times the Crab nebula flux. Because of the exceptional interest of the flaring activity from this source, observations at several wavelengths were conducted. The MAGIC telescopes, triggered by the INTEGRAL alerts, followed-up the flaring source for several nights during the period June 18-27, for more than 10 h. One hour of observation was simultaneously conducted on a giant 22 GHz radio flare and a hint of signal at GeV energies seen by Fermi-LAT. The MAGIC observations did not show significant emission in any of the analysed time intervals. The derived flux upper limit, in the energy range 200-1250 GeV, is 4.8 x 10(-12) photons cm(-2) s(-1). We estimate the gamma-ray opacity during the flaring period, which along with our non-detection points to an inefficient acceleration in the V404 Cyg jets if a very high energy emitter is located further than 1 x 10(10) cm from the compact object.

引用

页码：1688 / 1693

页数：6

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