A highly polarized radio jet during the 1998 outburst of the black hole transient XTE J1748-288

被引:37
作者
Brocksopp, C. [1 ]
Miller-Jones, J. C. A.
Fender, R. P.
Stappers, B. W.
机构
[1] UCL, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England
[2] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands
[3] Univ Southampton, Sch Phys & Astron, Southampton SO17 IBJ, Hants, England
[4] Stitching Astron, NL-7900 AA Dwingeloo, Netherlands
基金
英国科学技术设施理事会;
关键词
accretion; accretion discs; stars : individual : XTE J1748-288; ISM : jets and outflows; X-rays : binaries;
D O I
10.1111/j.1365-2966.2007.11846.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
XTE J1748-288 is a black hole X-ray transient which went into outburst in 1998 June. The X-ray light curves showed canonical morphologies, with minor variations on the 'fast rise exponential decay' profile. The radio source, however, reached an unusually high flux density of over 600 mJy. This high radio flux was accompanied by an exceptional (>20 per cent) fractional linear polarization, the variability of which was anticorrelated with the flux density. We use this variability to discuss possible depolarization mechanisms and to predict the underlying behaviour of the (unresolved) core/jet components.
引用
收藏
页码:1111 / 1117
页数:7
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