论文标题
在磁力爆发和快速无线电爆发中扩大火球
Expanding Fireball in Magnetar Bursts and Fast Radio Bursts
论文作者
论文摘要
在中子恒星（NS）表面附近产生的辐射等离子体的火球在其自身的压力下沿磁场线扩展，并产生光子发射和相对论物质流出。我们将扩大的火球演变分为五种情况，并考虑到关键过程，将扩展的火球演变分为五种情况；从磁通管逸出的光子的横向扩散，强磁场的效果，从NS表面载荷的载荷以及通过回旋谐振散射的辐射加速度的辐射加速度，其中一些在伽马射线爆发的背景下没有考虑。将我们的模型应用于具有快速无线电突发（FRB）的磁力爆发，特别是SGR 1935+2154与Galactic FRB 20200428A相关的X射线短爆发，我们表明爆发辐射可以将流出辐射加速到具有足够能量的高Lorentz因子，从而加速了足够的能量。
A fireball of radiation plasma created near the surface of a neutron star (NS) expands under its own pressure along magnetic field lines, and produces photon emission and relativistic matter outflow. We comprehensively classify the expanding fireball evolution into five cases and obtain the photospheric luminosity and the kinetic energy of the outflow, taking into account key processes; lateral diffusion of photons escaping from a magnetic flux tube, effects of strong magnetic field, baryon loading from the NS surface, and radiative acceleration via cyclotron resonant scattering, some of which have not been considered in the context of gamma-ray bursts. Applying our model to magnetar bursts with fast radio bursts (FRBs), in particular the X-ray short bursts from SGR 1935+2154 associated with the Galactic FRB 20200428A, we show that the burst radiation can accelerate the outflow to high Lorentz factor with sufficient energy to power FRBs.
