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

Enoto, Teruaki; Terasawa, Toshio; Kisaka, Shota; Hu, Chin-Ping; Guillot, Sebastien; Lewandowska, Natalia; Malacaria, Christian; Ray, Paul; Ho, Wynn; Harding, Alice; Okajima, Takashi; Arzoumanian, Zaven; Gendreau, Keith; Wadiasingh, Zorawar; Markwardt, Craig; Soong, Yang; Kenyon, Steve; Bogdanov, Slavko; Majid, Walid; Guver, Tolga; Jaisawal, Gaurava; Foster, Rick; Murata, Yasuhiro; Takeuchi, Hiroshi; Takefuji, Kazuhiro; Sekido, Mamoru; Yonekura, Yoshinori; Misawa, Hiroaki; Tsuchiya, Fuminori; Aoki, Takahiko; Tokumaru, Munetoshi; Honma, Mareki; Kameya, Osamu; Oyama, Tomoaki; Asano, Katsuaki; Shibata, Shinpei; Tanaka, Shuta

doi:10.1126/science.abd4659

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

Enoto T., Terasawa T., Kisaka S., Hu C., Guillot S., Lewandowska N., ...More

SCIENCE, vol.372, no.6538, pp.187-244, 2021 (SCI-Expanded)

Publication Type: Article / Article
Volume: 372 Issue: 6538
Publication Date: 2021
Doi Number: 10.1126/science.abd4659
Journal Name: SCIENCE
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Agricultural & Environmental Science Database, Animal Behavior Abstracts, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, ATLA Religion Database, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Computer & Applied Sciences, EBSCO Education Source, EMBASE, Environment Index, Gender Studies Database, Geobase, Linguistic Bibliography, MEDLINE, Metadex, MLA - Modern Language Association Database, Pollution Abstracts, Psycinfo, Public Affairs Index, Veterinary Science Database, zbMATH, DIALNET, Civil Engineering Abstracts
Page Numbers: pp.187-244
Istanbul University Affiliated: Yes

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 5.4 sigma 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.