欢迎大家参加以下学术报告:
题目:Ultraluminous X-ray pulsar: accreting magnetar?
(极亮X射线脉冲星:吸积磁星?)
报告人:仝号副研究员(中国科学院新疆天文台)
时间:周二(9月22日)下午2:30-3:30
地点:理学实验楼718报告厅
摘要:
磁星是宇宙中磁场最强的致密星,是近年来脉冲星领域的研究热点。关于磁星是否真的存在仍有很大争议。本报告将介绍最近发现的一颗极亮X射线脉冲星,以及我们的理论工作:它有可能并不是磁星,而是普通磁场的吸积脉冲星。
Magnetars are a special kind of neutron stars. There may also be accreting magnetars. From the studies of isolated magnetars, it is known that a neutron star with a strong dipole field only is not a magnetar. Super-slow X-ray pulsars may just be accreting high magnetic field neutron stars. The ultra-luminous X-ray pulsar NuSTAR J095551+6940.8 may be an accreting magnetar. It may be an accreting low magnetic field magnetar with multipole field of 10^14 G and dipole field of 10^12 G. This point of view is consistent with the study of isolated magnetars. An ultra-luminous X-ray pulsar phase in the binary evolution may result in massive millisecond pulsars.
简历:
2001-2005,中国科技大学,本科
2005-2010 南京大学天文系, 博士学位
2010-2012 中国科学院高能物理所,博士后
2012至今,中国科学院新疆天文台,副研究员
研究领域:脉冲星,中子星,磁星