A Galactic origin for the fast radio burst FRB010621
A Galactic origin for the fast radio burst FRB010621
复制标题
DOI：
10.1093/mnras/stu220
复制
发表时间：
2014-02
影响因子：
4.8
通讯作者：
K. Bannister;G. Madsen
中科院分区：
文献类型：
--
作者：
K. Bannister;G. Madsen
最近对快速射电暴（frb）的探测引起了人们对确定这些明亮的、不重复的、高度分散的脉冲的起源的强烈兴趣。了解这些爆发起源的主要限制是缺乏可靠的距离估计；它们的高色散测量意味着它们可能处于宇宙距离（$0.1 < z < 1.0$）。在这里，我们讨论新的距离约束FRB010621（又名J1852 $-$ 08）首先由Keane报道。我们利用速度分辨$H\alpha$和$H\beta$对爆发方向漫射电离气体的观测，计算出沿视线方向的消光校正发射量。我们将这种发射测量与星系旋转和电子分布的模型结合起来，得出了一个90% probability of the pulse residing in the Galaxy. However, we cannot differentiate between the two Galactic interpretations of Keane: a neutron star with unusual pulse amplitude distribution or Galactic black hole annihilation.
The recent detection of Fast Radio Bursts (FRBs) has generated strong interest in identifying the origin of these bright, non-repeating, highly dispersed pulses. The principal limitation in understanding the origin of these bursts is the lack of reliable distance estimates; their high dispersion measures imply that they may be at cosmological distances ($0.1 < z < 1.0$). Here we discuss new distance constraints to the FRB010621 (a.k.a J1852$-$08) first reported by Keane. We use velocity resolved $H\alpha$ and $H\beta$ observations of diffuse ionised gas toward the burst to calculate an extinction-corrected emission measure along the line of sight. We combine this emission measure with models of Galactic rotation and of electron distribution to derive a 90% probability of the pulse residing in the Galaxy. However, we cannot differentiate between the two Galactic interpretations of Keane: a neutron star with unusual pulse amplitude distribution or Galactic black hole annihilation.