Enhanced x-ray emission coinciding with giant radio pulses from the Crab Pulsar.

T Enoto ,Osamu Kameya ,Shota Kisaka ,Slavko Bogdanov ,Katsuaki Asano ,Yasuhiro Murata ,Wynn C G Ho ,Yang Soong ,T Güver ,Sebastien Guillot ,Ching Han Hu ,Fuminori Tsuchiya ,Shinpei Shibata ,N Lewandowska ,Rick Foster ,Hiroaki Misawa ,Tomoaki Oyama ,A K Harding ,C Markwardt ,Keith C Gendreau ,Hiroshi Takeuchi ,Takashi Okajima ,Zaven Arzoumanian ,Mamoru Sekido ,S Kenyon ,Paul S Ray ,Yoshinori Yonekura ,T Terasawa ,Mareki Honma ,M Tokumaru ,Gaurava K Jaisawal ,Walid A Majid ,Takao Aoki ,Kazuhiro Takefuji ,Zorawar Wadiasingh ,C Malacaria ,Shuta J Tanaka

doi:10.1126/science.abd4659

Abstract

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.

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