| Literature DB >> 32020916 |
Felix Aharonian1, Hiroki Akamatsu2, Fumie Akimoto3, Steven W Allen4,5,6, Lorella Angelini7, Marc Audard8, Hisamitsu Awaki9, Magnus Axelsson10, Aya Bamba11,12, Marshall W Bautz13, Roger Blandford4,5,6, Laura W Brenneman14, Gregory V Brown15, Esra Bulbul13, Edward M Cackett16, Maria Chernyakova1, Meng P Chiao7, Paolo S Coppi17,18, Elisa Costantini2, Jelle De Plaa2, Cor P De Vries2, Jan-Willem Den Herder2, Chris Done19, Tadayasu Dotani20, Ken Ebisawa20, Megan E Eckart7, Teruaki Enoto21,22, Yuichiro Ezoe23, Andrew C Fabian24, Carlo Ferrigno8, Adam R Foster14, Ryuichi Fujimoto25, Yasushi Fukazawa26, Akihiro Furuzawa27, Massimiliano Galeazzi28, Luigi C Gallo29, Poshak Gandhi30, Margherita Giustini2, Andrea Goldwurm31,32, Liyi Gu2, Matteo Guainazzi33, Yoshito Haba34, Kouichi Hagino20, Kenji Hamaguchi7,35, Ilana M Harrus7,35, Isamu Hatsukade36, Katsuhiro Hayashi20, Takayuki Hayashi37, Kiyoshi Hayashida38, Junko S Hiraga39, Ann Hornschemeier7, Akio Hoshino40, John P Hughes41, Yuto Ichinohe23, Ryo Iizuka20, Hajime Inoue42, Yoshiyuki Inoue20, Manabu Ishida20, Kumi Ishikawa20, Yoshitaka Ishisaki23, Masachika Iwai20, Jelle Kaastra2,43, Tim Kallman7, Tsuneyoshi Kamae11, Jun Kataoka44, Satoru Katsuda45, Nobuyuki Kawai46, Richard L Kelley7, Caroline A Kilbourne7, Takao Kitaguchi26, Shunji Kitamoto40, Tetsu Kitayama47, Takayoshi Kohmura48, Motohide Kokubun20, Katsuji Koyama49, Shu Koyama20, Peter Kretschmar50, Hans A Krimm51,52, Aya Kubota53, Hideyo Kunieda37, Philippe Laurent31,32, Shiu-Hang Lee21, Maurice A Leutenegger7, Olivier O Limousin32, Michael Loewenstein7, Knox S Long54, David Lumb33, Greg Madejski4, Yoshitomo Maeda20, Daniel Maier31,32, Kazuo Makishima55, Maxim Markevitch7, Hironori Matsumoto38, Kyoko Matsushita56, Dan Mccammon57, Brian R Mcnamara58, Missagh Mehdipour2, Eric D Miller13, Jon M Miller59, Shin Mineshige21, Kazuhisa Mitsuda20, Ikuyuki Mitsuishi37, Takuya Miyazawa60, Tsunefumi Mizuno26, Hideyuki Mori7, Koji Mori36, Koji Mukai7,35, Hiroshi Murakami61, Richard F Mushotzky62, Takao Nakagawa20, Hiroshi Nakajima38, Takeshi Nakamori63, Shinya Nakashima55, Kazuhiro Nakazawa11, Kumiko K Nobukawa64, Masayoshi Nobukawa65, Hirofumi Noda66,67, Hirokazu Odaka6, Takaya Ohashi23, Masanori Ohno26, Takashi Okajima7, Kenya Oshimizu68, Naomi Ota64, Masanobu Ozaki20, Frits Paerels69, Stéphane Paltani8, Robert Petre7, Ciro Pinto24, Frederick S Porter7, Katja Pottschmidt7,35, Christopher S Reynolds62, Samar Safi-Harb70, Shinya Saito40, Kazuhiro Sakai7, Toru Sasaki56, Goro Sato20, Kosuke Sato56, Rie Sato20, Makoto Sawada71, Norbert Schartel50, Peter J Serlemtsos7, Hiromi Seta23, Megumi Shidatsu55, Aurora Simionescu20, Randall K Smith14, Yang Soong7, Łukasz Stawarz72, Yasuharu Sugawara20, Satoshi Sugita46, Andrew Szymkowiak17, Hiroyasu Tajima3, Hiromitsu Takahashi26, Tadayuki Takahashi20, Shiníchiro Takeda60, Yoh Takei20, Toru Tamagawa55, Takayuki Tamura20, Takaaki Tanaka49, Yasuo Tanaka73, Yasuyuki T Tanaka26, Makoto S Tashiro68, Yuzuru Tawara37, Yukikatsu Terada68, Yuichi Terashima9, Francesco Tombesi7,62, Hiroshi Tomida20, Yohko Tsuboi45, Masahiro Tsujimoto20, Hiroshi Tsunemi38, Takeshi Go Tsuru49, Hiroyuki Uchida49, Hideki Uchiyama74, Yasunobu Uchiyama40, Shutaro Ueda20, Yoshihiro Ueda21, Shiníchiro Uno75, C Megan Urry17, Eugenio Ursino28, Shin Watanabe20, Norbert Werner76,77,26, Dan R Wilkins4, Brian J Williams54, Shinya Yamada23, Hiroya Yamaguchi7, Kazutaka Yamaoka3, Noriko Y Yamasaki20, Makoto Yamauchi36, Shigeo Yamauchi64, Tahir Yaqoob35, Yoichi Yatsu46, Daisuke Yonetoku25, Irina Zhuravleva4,5, Abderahmen Zoghbi59, Toshio Terasawa55, Mamoru Sekido78, Kazuhiro Takefuji78, Eiji Kawai78, Hiroaki Misawa79, Fuminori Tsuchiya79, Ryo Yamazaki71, Eiji Kobayashi71, Shota Kisaka71, Takahiro Aoki80.
Abstract
To search for giant X-ray pulses correlated with the giant radio pulses (GRPs) from the Crab pulsar, we performed a simultaneous observation of the Crab pulsar with the X-ray satellite Hitomi in the 2 - 300 keV band and the Kashima NICT radio observatory in the 1.4 - 1.7 GHz band with a net exposure of about 2 ks on 25 March 2016, just before the loss of the Hitomi mission. The timing performance of the Hitomi instruments was confirmed to meet the timing requirement and about 1,000 and 100 GRPs were simultaneously observed at the main and inter-pulse phases, respectively, and we found no apparent correlation between the giant radio pulses and the X-ray emission in either the main or inter-pulse phases. All variations are within the 2 sigma fluctuations of the X-ray fluxes at the pulse peaks, and the 3 sigma upper limits of variations of main- or inter-pulse GRPs are 22% or 80% of the peak flux in a 0.20 phase width, respectively, in the 2 - 300 keV band. The values become 25% or 110% for main or inter-pulse GRPs, respectively, when the phase width is restricted into the 0.03 phase. Among the upper limits from the Hitomi satellite, those in the 4.5-10 keV and the 70-300 keV are obtained for the first time, and those in other bands are consistent with previous reports. Numerically, the upper limits of main- and inter-pulse GRPs in the 0.20 phase width are about (2.4 and 9.3) ×10-11 erg cm-2, respectively. No significant variability in pulse profiles implies that the GRPs originated from a local place within the magnetosphere and the number of photon-emitting particles temporally increases. However, the results do not statistically rule out variations correlated with the GRPs, because the possible X-ray enhancement may appear due to a > 0.02% brightening of the pulse-peak flux under such conditions.Keywords: Giant radio pulses; X-rays:stars; pulsar:individual:B0531+21; radio continuum:stars
Year: 2018 PMID： 32020916 PMCID： PMC6999749 DOI： 10.1093/pasj/psx083
Source DB: PubMed Journal: Publ Astron Soc Jpn Nihon Tenmon Gakkai ISSN： 0004-6264 Impact factor: 5.071