Giant radio pulses (GRPs) are sporadic bursts emitted by some pulsars that last a few microseconds and are hundreds to thousands of times brighter than regular pulses from these sources. The only GRP-associated emission outside of radio wavelengths is from the Crab Pulsar, where optical emission is enhanced by a few percentage points during GRPs. We observed the Crab Pulsar simultaneously at x-ray and radio wavelengths, finding enhancement of the x-ray emission by 3.8 ± 0.7% (a 5.4σ detection) coinciding with GRPs. This implies that the total emitted energy from GRPs is tens to hundreds of times higher than previously known. We discuss the implications for the pulsar emission mechanism and extragalactic fast radio bursts.

巨型无线电脉冲（GRP）是由某些脉冲星发出的偶发脉冲，持续数微秒，比来自这些源的常规脉冲亮数百至数千倍。无线电波长之外唯一与GRP相关的发射是来自Crab Pulsar的，在GRP期间，其光发射提高了几个百分点。我们在X射线和无线电波长同时观察了蟹状脉冲星，发现X射线的发射增强了3.8±0.7％（检测到5.4σ），与GRP吻合。这意味着从GRP发出的总能量比以前知道的要高几十到几百倍。我们讨论了对脉冲星发射机制和银河外快速无线电脉冲串的影响。