Disk-jet connection in Cygnus X-3

被引:24
作者
Choudhury, M
Rao, AR
Vadawale, SV
Ishwara-Chandra, CH
Jain, AK
机构
[1] Tata Inst Fundamental Res, Mumbai 400005, India
[2] ISRO, Satellite Ctr, Bangalore 560017, Karnataka, India
关键词
accretion; binaries : close; stars : individual : Cygnus X-3; radio continuum : stars; X-rays : binaries;
D O I
10.1051/0004-6361:20020091
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the results of a detailed correlation study between the soft X-ray, hard X-ray, and radio emission (obtained from RXTE ASM, BATSE, and GBI observations, respectively) of the bright radio emitting Galactic X-ray binary Cygnus X-3. We detect a very strong positive correlation between the soft X-ray and radio emission during the low-hard and minor flaring periods of the source, and an anti-correlation between the soft and hard X-ray emissions. We present statistical arguments to suggest that the anti-correlation between the radio and hard X-ray emission, reported earlier, is primarily due to their correlation and anti-correlation, respectively, with the soft X-ray emission. We make a wide band X-ray spectral study using the pointed RXTE observations and detect a pivotal behaviour in the X-ray spectrum. We argue that this X-ray spectral pivoting is responsible for the anti-correlation between the soft and hard X-ray emissions. The strong correlation between the soft X-ray and radio emission suggests a close link between the accreting mechanism, plasma cloud surrounding the compact object and the radio emission.
引用
收藏
页码:L35 / L38
页数:4
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