Enhanced x-ray emission coinciding with giant radio pulses from the Crab Pulsar.
Teruaki EnotoToshio TerasawaShota KisakaChin-Ping HuSebastien GuillotNatalia LewandowskaChristian MalacariaPaul S RayWynn C G HoAlice K HardingTakashi OkajimaZaven ArzoumanianKeith C GendreauZorawar WadiasinghCraig B MarkwardtYang SoongSteve KenyonSlavko BogdanovWalid A MajidTolga GüverGaurava K JaisawalRick FosterYasuhiro MurataHiroshi TakeuchiKazuhiro TakefujiMamoru SekidoYoshinori YonekuraHiroaki MisawaFuminori TsuchiyaTakahiko AokiMunetoshi TokumaruMareki HonmaOsamu KameyaTomoaki OyamaKatsuaki AsanoShinpei ShibataShuta J TanakaPublished in: Science (New York, N.Y.) (2021)
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.