SPI/INTEGRAL observation of the Cygnus region

被引：23

作者：

Bouchet, L

Jourdain, E

Roques, JP

Mandrou, P

von Ballmoos, P

Boggs, S

Caraveo, P

Cassé, M

Cordier, B

Diehl, R

Durouchoux, P

von Kienlin, A

Knodlseder, J

Jean, P

Leleux, P

Lichti, GG

Matteson, J

Sanchez, F

Schanne, S

Schoenfelder, V

Skinner, G

Strong, A

Teegarden, B

Vedrenne, G

Wunderer, C

机构：

[1] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse, France

[2] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany

[3] CEA Saclay, DSM, DAPNIA, Sap, F-91191 Gif Sur Yvette, France

[4] IASF, I-20133 Milan, Italy

[5] Univ Valencia, IFIC, E-46100 Burjassot, Spain

[6] Univ Catholique Louvain, Inst Phys Nucl, B-1348 Louvain, Belgium

[7] Univ Calif San Diego, CASS, La Jolla, CA 92093 USA

[8] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[9] NASA, Goddard Space Flight Ctr, High Energy Astrophys Lab, Greenbelt, MD 20771 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 411卷 / 01期

关键词：

gamma rays : observations; X-ray stars : individual : Cyg X-1; Cyg X-3; EXO; 2030+375; black hole : physics; space telescope : INTEGRAL : SPI;

D O I：

10.1051/0004-6361:20031324

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the analysis of the first observations of the Cygnus region by the SPI spectrometer onboard the Integral Gamma Ray Observatory, encompassing similar to600 ks of data. Three sources namely Cyg X-1, Cyg X-3 and EXO 2030+375 were clearly detected. Our data illustrate the temporal variability of Cyg X-1 in the energy range from 20 keV to 300 keV. The spectral analysis shows a remarkable stability of the Cyg X-1 spectra when averaged over one day timescale. The other goal of these observations is SPI inflight calibration and performance verification. The latest objective has been achieved as demonstrated by the results presented in this paper.

引用

页码：L377 / L382

页数：6

共 20 条

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