Magic observations of the unidentified γ-ray source TEV J2032+4130

被引：67

作者：

Albert, J. ^{[2
]}

Aliu, E. ^{[1
]}

Anderhub, H. ^{[3
,8
]}

Antoranz, P. ^{[4
]}

Baixeras, C. ^{[5
]}

Barrio, J. A. ^{[4
]}

Bartko, H. ^{[6
]}

Bastieri, D. ^{[7
,8
]}

Becker, J. K. ^{[9
]}

Bednarek, W. ^{[10
]}

Berger, K. ^{[2
]}

Bigongiari, C. ^{[7
,8
]}

Biland, A. ^{[3
]}

Bock, R. K. ^{[6
,7
,8
]}

Bonnoli, G. ^{[11
,12
]}

Bordas, P. ^{[13
]}

Bosch-Ramon, V. ^{[13
]}

Bretz, T. ^{[2
]}

Britvitch, I. ^{[3
]}

Camara, M. ^{[4
]}

Carmona, E. ^{[6
]}

Chilingarian, A. ^{[14
]}

Commichau, S. ^{[3
]}

Contreras, J. L. ^{[4
]}

Cortina, J. ^{[1
]}

Costado, M. T. ^{[15
,16
]}

Curtef, V. ^{[9
]}

Dazzi, F. ^{[7
,8
]}

De Angelis, A. ^{[17
,18
]}

Delgado, C. ^{[15
]}

de los Reyes, R. ^{[4
]}

Domingo-Santamaria, E. ^{[1
]}

De Lotto, B. ^{[17
,18
]}

De Maria, M. ^{[17
,18
]}

De Sabata, F. ^{[17
,18
]}

Dorner, D. ^{[2
]}

Doro, M. ^{[7
,8
]}

Errando, M. ^{[1
]}

Fagiolini, M. ^{[11
,12
]}

Ferenc, D. ^{[19
]}

Fernandez, E. ^{[1
]}

Firpo, R. ^{[1
]}

Fonseca, M. V. ^{[4
]}

Font, L. ^{[5
]}

Galante, N. ^{[6
]}

Garcia-Lopez, R. J. ^{[15
,16
]}

Garczarczyk, M. ^{[6
]}

Gaug, M. ^{[15
]}

Goebel, F. ^{[6
]}

Hayashida, M. ^{[6
]}

机构：

[1] IFAE, E-08193 Barcelona, Spain

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

[3] Univ Zurich, 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 Siena, I-53100 Siena, Italy

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

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

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

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

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

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

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

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

[20] Turku Univ, Tuorla Observ, FI-21500 Piikkio, Finland

[21] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BG-1784 Sofia, Bulgaria

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

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

[24] Ist Nazl Fis Nucl, I-34131 Trieste, Italy

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

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

[27] ICREA, Barcelona 08193, Spain

[28] CSIC, IEEC, Inst Ciencies Espai, Barcelona 08193, Spain

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2008年 / 675卷 / 01期

关键词：

gamma rays : observations;

D O I：

10.1086/529520

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We observed the first known very high energy (VHE) gamma-ray-emitting unidentified source, TeV J2032 + 4130, for 94 hr with the MAGIC telescope. The source was detected with a significance of 5.6 sigma. The flux, position, and angular extension are compatible with the previous ones measured by the HEGRA telescope system 5 years ago. The integral flux amounts to (4.5 +/- 0.3(stat)+/- 0.35(sys)) x 10 (- 13) photons cm(-2) s(-1) above 1 TeV. The source energy spectrum, obtained with the lowest energy threshold to date, is compatible with a single power law with a hard photon index of Gamma= - 2.0 +/- 0.3(stat)+/- 0.2(sys).

引用

页码：L25 / L28

页数：4

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