First INTEGRAL observations of GRS 1915+105

被引：29

作者：

Hannikainen, DC

Vilhu, O

Rodriguez, J

Brandt, S

Westergaard, NJ

Lund, N

Mocour, I

Durouchoux, P

Belloni, T

Castro-Tirado, A

Charles, PA

Dean, AJ

Fender, RP

Feroci, M

Hakala, P

Hunstead, RW

Kaiser, CR

King, A

Mirabel, IF

Pooley, GG

Poutanen, J

Wu, K

Zdziarski, AA

机构：

[1] Univ Helsinki Observ, Helsinki 00014, Finland

[2] INTEGRAL Sci Data Ctr, CH-1290 Versoix, Switzerland

[3] Ctr Etud Saclay, DAPNIA, Serv Astrophys, CNRS,FRE 2591, F-91191 Gif Sur Yvette, France

[4] Danish Space Res Inst, DK-2100 Copenhagen O, Denmark

[5] INAF, Osservatorio Astron Brera, I-23807 Merate, LC, Italy

[6] Inst Astrofis Andalucia, CSIC, E-18080 Granada, Spain

[7] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England

[8] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[9] CNR, Sez Roma, Ist Astrofis Spaziale & fis Cosm, I-00133 Rome, Italy

[10] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

[11] Univ Leicester, Theoret Astrophys Grp, Leicester LE1 7RH, Leics, England

[12] Univ Cambridge, Cavendish Lab, Astrophys Grp, Cambridge CB3 0HE, England

[13] Univ Oulu, Astron Div, Oulu 90014, Finland

[14] UCL, Mullard Space Sci Lab, Holmbury RH5 6NT, Surrey, England

[15] Nicholas Copernicus Astron Ctr, PL-00716 Warsaw, Poland

来源：

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

关键词：

X-rays : binaries; X-rays : GRS 1915+105;

D O I：

10.1051/0004-6361:20031444

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present data from the first of six monitoring Open Time observations of GRS 1915+105 undertaken with the orbiting INTEGRAL satellite. The source was clearly detected with all three X-ray and gamma-ray instruments on board. GRS 1915+105 was in a highly variable state, as demonstrated by the JEMX-2 and ISGRI lightcurves. These and simultaneous RXTE/PCA lightcurves point to a novel type of variability pattern in the source. In addition, we fit the combined JEM X-2 and ISGRI spectrum between 3-300 keV with a disk blackbody+powerlaw model leading to typical parameter values found earlier at similar luminosity levels. A new transient, IGR J19140+098, was discovered during the present observation.

引用

页码：L415 / L419

页数：5

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