论文标题
与BurstT的银河系快速无线电爆发的检测率
Detection Rate of Fast Radio Bursts in the Milky Way with BURSTT
论文作者
论文摘要
快速无线电爆发(FRB)是无线电发射的激烈爆发,持续时间毫秒。尽管研究人员发现它们经常发生在天空中,但它们仍然处于黑暗状态,以了解导致现象的原因,因为现有的无线电观测站在发现FRB祖细胞期间遇到了某些挑战。提议在台湾(BUSTT)的繁华宇宙广播调查望远镜的建设来解决这些挑战。我们通过应用一系列空间分布,脉冲宽度和光度函数来模拟模拟的银河FRB样事件。湍流星际介质(ISM)对银河系中FRB样事件的可检测性的影响被考虑估计模拟事件的分散度度量和脉搏散射。我们以银河系可检测的银河系方式评估类似FRB的事件的分数,并将结果与瞬态天文无线电发射2(Stare2)和银河无线电资源管理器(GREX)进行比较。我们发现,与Stare2和Grex相比,BUSTT可以将检测率提高两个数量级以上,这取决于事件的光度函数的斜率。我们还研究了BUSTT规范对其检测改进的影响。这导致了这样一个事实,即极大的灵敏度和改善银河系平面的覆盖范围对爆炸的检测改善产生了重大影响。我们发现,BUSTT-2048的升级版本可能会使模糊的FRB样事件的检测率增加了3倍。
Fast radio bursts (FRBs) are intense bursts of radio emission with durations of milliseconds. Although researchers have found them happening frequently all over the sky, they are still in the dark to understand what causes the phenomena because the existing radio observatories have encountered certain challenges during the discovery of FRB progenitors. The construction of Bustling Universe Radio Survey Telescope in Taiwan (BURSTT) is being proposed to solve these challenges. We simulate mock Galactic FRB-like events by applying a range of spatial distributions, pulse widths and luminosity functions. The effect of turbulent Interstellar Medium (ISM) on the detectability of FRB-like events within the Milky Way plane is considered to estimate the dispersion measure and pulse scattering of mock events. We evaluate the fraction of FRB-like events in the Milky Way that are detectable by BURSTT and compare the result with those by Survey for Transient Astronomical Radio Emission 2 (STARE2) and Galactic Radio Explorer (GReX). We find that BURSTT could increase the detection rate by more than two orders of magnitude compared with STARE2 and GReX, depending on the slope of luminosity function of the events. We also investigate the influence of the specifications of BURSTT on its detection improvement. This leads to the fact that greatly higher sensitivity and improved coverage of the Milky Way plane have significant effects on the detection improvement of BURSTT. We find that the upgrade version of BURSTT, BURSTT-2048 could increase the detection rate of faint Galactic FRB-like events by a factor of 3.