Enhanced x-ray emission coinciding with giant radio pulses from the Crab Pulsar
Enhanced x-ray emission coinciding with giant radio pulses from the Crab Pulsar
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 5.4s 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.
187-190
Enoto, Teruaki
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Terasawa, Toshio
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Kisaka, Shota
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Hu, Chin-Ping
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Guillot, Sebastien
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Lewandowska, Natalia
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Malacaria, Christian
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Ray, Paul S.
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Ho, Wynn C.G.
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Harding, Alice K.
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Okajima, Takashi
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Arzoumanian, Zaven
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Gendreau, Keith C.
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Wadiasingh, Zorawar
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Markwardt, Craig B.
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Soong, Yang
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Kenyon, Steve
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Bogdanov, Slavko
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Majid, Walid A.
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Güver, Tolga
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Jaisawal, Gaurava K.
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Foster, Rick
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Murata, Yasuhiro
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Takeuchi, Hiroshi
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Takefuji, Kazuhiro
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Sekido, Mamoru
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Yonekura, Yoshinori
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Misawa, Hiroaki
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Tsuchiya, Fuminori
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Aoki, Takahiko
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Tokumaru, Munetoshi
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Honma, Mareki
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Kameya, Osamu
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Oyama, Tomoaki
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Asano, Katsuaki
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Shibata, Shinpei
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Tanaka, Shuta J.
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9 April 2021
Enoto, Teruaki
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Terasawa, Toshio
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Kisaka, Shota
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Hu, Chin-Ping
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Guillot, Sebastien
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Lewandowska, Natalia
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Malacaria, Christian
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Ray, Paul S.
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Ho, Wynn C.G.
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Harding, Alice K.
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Okajima, Takashi
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Arzoumanian, Zaven
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Gendreau, Keith C.
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Wadiasingh, Zorawar
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Markwardt, Craig B.
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Soong, Yang
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Kenyon, Steve
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Bogdanov, Slavko
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Majid, Walid A.
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Güver, Tolga
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Jaisawal, Gaurava K.
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Foster, Rick
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Murata, Yasuhiro
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Takeuchi, Hiroshi
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Takefuji, Kazuhiro
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Sekido, Mamoru
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Yonekura, Yoshinori
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Misawa, Hiroaki
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Tsuchiya, Fuminori
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Aoki, Takahiko
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Tokumaru, Munetoshi
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Honma, Mareki
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Kameya, Osamu
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Oyama, Tomoaki
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Asano, Katsuaki
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Shibata, Shinpei
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Tanaka, Shuta J.
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Enoto, Teruaki, Terasawa, Toshio, Kisaka, Shota, Hu, Chin-Ping, Guillot, Sebastien, Lewandowska, Natalia, Malacaria, Christian, Ray, Paul S., Ho, Wynn C.G., Harding, Alice K., Okajima, Takashi, Arzoumanian, Zaven, Gendreau, Keith C., Wadiasingh, Zorawar, Markwardt, Craig B., Soong, Yang, Kenyon, Steve, Bogdanov, Slavko, Majid, Walid A., Güver, Tolga, Jaisawal, Gaurava K., 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 and Tanaka, Shuta J.
(2021)
Enhanced x-ray emission coinciding with giant radio pulses from the Crab Pulsar.
Science, 372 (6538), , [eabd4659].
(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 5.4s 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.
Text
Wynn Ho
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Accepted/In Press date: 5 March 2021
e-pub ahead of print date: 16 March 2021
Published date: 9 April 2021
Additional Information:
Funding Information:
T.E., T.T., H.M., K.A., M.H., S.S., S.J.T., and S.K. are supported by JSPS/ MEXT KAKENHI grant nos. 15H00845, 15K05069,16H02198, 17H01116, 17K18270, 17K18776, 18H01245, 18H01246, 18H04584, and 19K14712. T.E. acknowledges Hakubi projects of Kyoto University and RIKEN. W.C.G.H. acknowledges support through grant no. 80NSSC20K0278 from NASA. C.H. was supported as the JSPS International Research Fellow (ID: P18318) and by the Ministry of Science and Technology in Taiwan through grant no. MOST 109-2112-M-018-009-MY3. C.M. is supported by an appointment to the NASA Postdoctoral Program at the Marshall Space Flight Center, administered by Universities Space Research Association under contract with NASA. H.T. was supported by the discretionary expenses of the director of Institute of Space and Astronautical Science (ISAS), JAXA. W.A.M performed research at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the NASA.
Publisher Copyright:
Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works
Identifiers
Local EPrints ID: 449150
URI: http://eprints.soton.ac.uk/id/eprint/449150
ISSN: 0036-8075
PURE UUID: ed317346-cd86-4e19-9964-749aa476aaa9
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Date deposited: 18 May 2021 16:31
Last modified: 16 Mar 2024 12:09
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Contributors
Author:
Teruaki Enoto
Author:
Toshio Terasawa
Author:
Shota Kisaka
Author:
Chin-Ping Hu
Author:
Sebastien Guillot
Author:
Natalia Lewandowska
Author:
Christian Malacaria
Author:
Paul S. Ray
Author:
Alice K. Harding
Author:
Takashi Okajima
Author:
Zaven Arzoumanian
Author:
Keith C. Gendreau
Author:
Zorawar Wadiasingh
Author:
Craig B. Markwardt
Author:
Yang Soong
Author:
Steve Kenyon
Author:
Slavko Bogdanov
Author:
Walid A. Majid
Author:
Tolga Güver
Author:
Gaurava K. Jaisawal
Author:
Rick Foster
Author:
Yasuhiro Murata
Author:
Hiroshi Takeuchi
Author:
Kazuhiro Takefuji
Author:
Mamoru Sekido
Author:
Yoshinori Yonekura
Author:
Hiroaki Misawa
Author:
Fuminori Tsuchiya
Author:
Takahiko Aoki
Author:
Munetoshi Tokumaru
Author:
Mareki Honma
Author:
Osamu Kameya
Author:
Tomoaki Oyama
Author:
Katsuaki Asano
Author:
Shinpei Shibata
Author:
Shuta J. Tanaka
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