论文标题
重复的快速无线电爆发FRB 180916.J0158+65的同时X射线和无线电观察结果
Simultaneous X-ray and Radio Observations of the Repeating Fast Radio Burst FRB 180916.J0158+65
论文作者
论文摘要
我们使用加拿大氢强度映射实验（Chime），Effelsberg和Deep Space Network（DSS-14和DSS-63和DSS-63）电台望远镜和Chandra X-Ray X-Ray X-Ray X-Ray观测观察到了重复快速无线电源FRB 180158+65的重复无线电爆发源FRB 180158+65的同时无线电和X射线观察。在33 Ks的Chandra观测值期间，我们发现在重叠的Effelsberg或Deep Space网络观测值和Chime/FRB源过渡期间的单个无线电爆发中，没有发现无线电爆发。我们在钱德拉观察期间没有检测到超过背景的X射线事件。这些非解题意味着5- $σ$限制为$ <5 \ times10^{ - 10} $ erg cm $^{ - 2} $，用于0.5---10 kev电台爆发时迅速发射的迅速发射和$ 1.3 \ times10^\ times10^{ - 9} $ erg cm $^fr fr fr frer， 180916.J0158+65。鉴于FRB 180916.J0158+65（$ z \ sim0.034 $）的主机 - 盖拉克斯红移，它们分别对应于$ <1.6 \ times10^{45} $ erg和$ <4 \ times10^{45} $ erg的能量限制。我们还在0.5---10 \上放置了5- $σ$限制的$ <8 \ 8 \ times10^{ - 15} $ erg s $^{ - 1} $ cm $^{ - 2} $上的0.5---10 \，kev吸收了FRB 180916.J0158+65位置上持续来源的kev吸收的Flux。这对应于$ <2 \ 2 \ times10^{40} $ erg s $^{ - 1} $的光度限制。使用FERMI/GBM数据，我们在FRB 180916.J0158+65的无线电爆发时搜索提示γ-射线发射，并且没有发现明显的突发，限制了$ 4 \ times10^{ - 9} $ erg cm $ $^{ - 2} $在10--100 kev felcece上。我们还搜索费米/LAT数据，以定期调制无线电活动16.35天的伽马射线亮度，并检测到没有显着调制。我们将这些深度限制与各种快速无线电爆发模型的预测进行了比较，但是得出结论，在紧密的快速无线电爆发源上，需要强烈限制理论。
We report on simultaneous radio and X-ray observations of the repeating fast radio burst source FRB 180916.J0158+65 using the Canadian Hydrogen Intensity Mapping Experiment (CHIME), Effelsberg, and Deep Space Network (DSS-14 and DSS-63) radio telescopes and the Chandra X-ray Observatory. During 33 ks of Chandra observations, we detect no radio bursts in overlapping Effelsberg or Deep Space Network observations and a single radio burst during CHIME/FRB source transits. We detect no X-ray events in excess of the background during the Chandra observations. These non-detections imply a 5-$σ$ limit of $<5\times10^{-10}$ erg cm$^{-2}$ for the 0.5--10 keV fluence of prompt emission at the time of the radio burst and $1.3\times10^{-9}$ erg cm$^{-2}$ at any time during the Chandra observations at the position of FRB 180916.J0158+65. Given the host-galaxy redshift of FRB 180916.J0158+65 ($z\sim0.034$), these correspond to energy limits of $<1.6\times10^{45}$ erg and $<4\times10^{45}$ erg, respectively. We also place a 5-$σ$ limit of $<8\times10^{-15}$ erg s$^{-1}$ cm$^{-2}$ on the 0.5--10\,keV absorbed flux of a persistent source at the location of FRB 180916.J0158+65. This corresponds to a luminosity limit of $<2\times10^{40}$ erg s$^{-1}$. Using Fermi/GBM data we search for prompt gamma-ray emission at the time of radio bursts from FRB 180916.J0158+65 and find no significant bursts, placing a limit of $4\times10^{-9}$ erg cm$^{-2}$ on the 10--100 keV fluence. We also search Fermi/LAT data for periodic modulation of the gamma-ray brightness at the 16.35-day period of radio-burst activity and detect no significant modulation. We compare these deep limits to the predictions of various fast radio burst models, but conclude that similar X-ray constraints on a closer fast radio burst source would be needed to strongly constrain theory.
