Magic upper limits on the very high energy emission from gamma-ray bursts

被引：85

作者：

Albert, J. ^{[1
]}

Aliu, E.

Anderhub, H.

Antoranz, P.

Armada, A.

Baixeras, C.

Barrio, J. A.

Bartko, H.

Bastieri, D.

Becker, J.

Bednarek, W.

Berger, K.

Bigongiari, C.

Biland, A.

Bock, R. K.

Bordas, P.

Bosch-Ramon, V.

Bretz, T.

Britvitch, I.

Camara, M.

Carmona, E.

Chilingarian, A.

Ciprini, S.

Coarasa, J. A.

Commichau, S.

Contreras, J. L.

Cortina, J.

Costado, M. T.

Curtef, V.

Danielyan, V.

Dazzi, F.

De Angelis, A.

Delgado, C.

de los Reyes, R.

De Lotto, B.

Domingo-Santamaria, E.

Dorner, D.

Doro, M.

Errando, M.

Fagiolini, M.

Ferenc, D.

Fernandez, E.

Firpo, R.

Flix, J.

Fonseca, M. V.

Font, L.

Fuchs, M.

Galante, N.

Garcia-Lopez, R.

Garczarczyk, M.

机构：

[1] Univ Wurzburg, D-97074 Wurzburg, Germany

[2] Inst Fis Altes Energies, E-08193 Barcelona, Spain

[3] ETH, CH-8093 Zurich, Switzerland

[4] Univ Complutense, E-28040 Madrid, Spain

[5] Univ Autonoma Barcelona, E-08193 Barcelona, Spain

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

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

[8] Ist Nazl Fis Nucl, I-35131 Padua, Italy

[9] Univ Dortmund, D-44227 Dortmund, Germany

[10] Univ Lodz, PL-90236 Lodz, Poland

[11] Univ Barcelona, E-08028 Barcelona, Spain

[12] Yerevan Phys Inst, AM-375036 Yerevan, Armenia

[13] Turku Univ, Tuorla Obsev, FI-21500 Piikkio, Finland

[14] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain

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

[16] Ist Nazl Fis Nucl, I-33100 Udine, Italy

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

[18] Ist Nazl Fis Nucl, I-53100 Siena, Italy

[19] Univ Calif Davis, Davis, CA 95616 USA

[20] Humboldt Univ, D-12489 Berlin, Germany

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

[22] Osserv Astron Trieste, INAF, I-34131 Trieste, Italy

[23] INFN Trieste, I-34131 Trieste, Italy

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

[25] Ist Nazl Fis Nucl, I-56126 Pisa, Italy

[26] CSIC, IEEC, ICREA, E-08193 Barcelona, Spain

[27] CSIC, IEEC, Inst Ciencies Espai, E-08193 Barcelona, Spain

来源：

ASTROPHYSICAL JOURNAL | 2007年 / 667卷 / 01期

关键词：

gamma rays : bursts; gamma rays : observations;

D O I：

10.1086/520761

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

During its first data cycle, between 2005 and the beginning of 2006, the fast repositioning system of the MAGIC telescope allowed the observation of nine different gamma-ray bursts as possible sources of very high energy gamma-rays. These observations were triggered by alerts from Swift, HETE-2, and INTEGRAL; they started as quickly as possible after the alerts and lasted for several minutes, with an energy threshold varying between 80 and 200 GeV, depending on the zenith angle of the burst. No evidence for gamma signals was found, and upper limits for the flux were derived for all events using the standard analysis chain of MAGIC. For the bursts with measured redshifts, the upper limits are compatible with a power-law extrapolation, when the intrinsic fluxes are evaluated taking into account the attenuation due to the scattering in the metagalactic radiation field.

引用

页码：358 / 366

页数：9

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