Magnetic field configurations of magentars

主讲人 (Speaker): Kotaro Fujisawa

主讲人单位 (Speaker's Institute): Waseda University

邀请人 (Invited by): 余聪

时间 (Time): 星期一, 2018/03/12 - 10:00 to 11:00

地点 (Location): 珠海校区海滨红楼17栋107会议室

摘要 (Abstract):

Neutron stars have the strongest magnetic fields among stars in the Universe. In particular, Anomalous X-ray Pulsars and Soft Gamma-ray Repeaters are considered to be magnetars, a special class of magnetized neutron stars. Magnetars have very strong dipole magnetic fields whose typical values reach approximately 10^15 G at their surfaces. They display stationary intense emissions and dynamical flares releasing magnetic energy. The magnetic field configurations of magnetars are important because the energy releasing process and magnetic field evolution depend on their magnetic field structures. In this study, we considered both core and crust of magnetars and calculated magnetic field configurations simultaneously. We found the interaction between core field and crustal field are important to consider magnetic field configurations of magnetars.

主讲人简介 (Speaker's CV):

2009: Bachelor, University of Tokyo 2011: Master, University of Tokyo 2014: Ph.D, University of Tokyo 2014-2016 : Junior Researcher, Waseda University 2016-present : JSPS fellow, Waseda University