Coupled post-glitch response of the crust and interior of neutron stars

2nd International Symposium on the Modern Physics of Compact Stars and Relativistic Gravity

物理学;天文学

Van Eysden, C.A.^1

NORDITA, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden^1

关键词: Conservation of energy;    Coupled motions;    Ekman pumping;    Exact analytical solutions;    Final state;    Magnetized plasmas;    Neutron stars;    Viscous fluids;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/496/1/012019/pdf
DOI  :  10.1088/1742-6596/496/1/012019

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The spin-up of magnetized plasma and its role in the post-glitch response of neutron stars was first studied over thirty years ago, where it was demonstrated that co-rotation between crust and plasma is established rapidly (within a few seconds) by a process analogous to Ekman pumping in a viscous fluid. However, if the magnetized plasma is considered to be ideal, conservation of energy implies that the final state cannot be co-rotation. Using an exact analytical solution for the coupled motion of the crust and plasma, we demonstrate that the system oscillates persistently and explore the consequences for neutron star observations.