arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0710.5822astro-ph
收藏

用INTEGRAL观测磁星尾部的硬X射线变化

Hard X-ray variability of Magnetar's Tails observed with INTEGRAL

D. Gotz, S. Mereghetti, K. Hurley, P. Esposito, E. V. Gotthelf, G. L. Israel, N. Rea, A. Tiengo, R. Turolla, S. Zane

摘要:

由于INTEGRAL卫星上IBIS编码掩模望远镜的成像能力,最近发现了磁星10千电子伏以上的持续发射。显示出一定程度的长期变异性的仅有两个来源是SGR 1806-20和1 RXS J170849.0-400910。我们发现一些迹象表明,这些硬尾的变化可能是在这些源低于10千电子伏的光谱变化的驱动程序。此外,我们报告的第一次检测在2.8西格玛水平的脉动在硬X射线尾巴的SGR 1806-20。

英文摘要:

Magnetar's persistent emission above 10 keV was recently discovered thanks to the imaging capabilities of the IBIS coded mask telescope on board the INTEGRAL satellite. The only two sources that show some degree of long term variability are SGR 1806-20 and 1RXS J170849.0-400910. We find some indications that variability of these hard tails could be the driver of the spectral variability measured in these sources below 10 keV. In addition we report for the first time the detection at 2.8 sigma level of pulsations in the hard X-ray tail of SGR 1806-20.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑