Zobrazeno 1 - 10
of 413
pro vyhledávání: '"SAKAMOTO, Takanori"'
A new type of cosmological transient, dubbed fast radio bursts (FRBs), was recently discovered. The source of FRBs is still unknown. One possible scenario of an FRB is the collapse of a spinning supra-massive neutron star. Zhang (2014) suggests that
Externí odkaz:
http://arxiv.org/abs/2406.18104
Autor:
Ogino, Naoki, Arimoto, Makoto, Hamidani, Hamid, Sakamoto, Takanori, Yonetoku, Daisuke, Sawano, Tatsuya, Serino, Motoko, Asano, Katsuaki, Kawai, Nobuyuki
The detection of the short gamma-ray burst (SGRB) 050709 by the HETE-2 satellite opened a new window into understanding the nature of SGRBs, offering clues about their emission mechanism and progenitors, with the crucial aid of optical follow-up obse
Externí odkaz:
http://arxiv.org/abs/2404.02627
Autor:
Ogino, Naoki, Arimoto, Makoto, Sawano, Tatsuya, Yonetoku, Daisuke, Shen, Hsien-chieh, Sakamoto, Takanori, Hiraga, Junko S., Yatsu, Yoichi, Mihara, Tatehiro
We developed an FPGA-based high-speed readout system for a complementary metal-oxide-semiconductor (CMOS) image sensor to observe soft X-ray transients in future satellite missions, such as HiZ-GUNDAM. Our previous research revealed that the CMOS ima
Externí odkaz:
http://arxiv.org/abs/2403.10409
Autor:
Obayashi, Kaori, Toriyama, Ayumu, Murakoshi, Mayu, Sato, Yuri, Tanaka, Shuta J., Sakamoto, Takanori, Yamazaki, Ryo
Publikováno v:
Journal of High Energy Astrophysics, 41, 1-12 (2024)
We present a possible theoretical interpretation of the observed afterglow emission of long gamma-ray burst GRB 080710. While its prompt GRB emission properties are normal, the afterglow light curves in the optical and infrared bands are exceptional
Externí odkaz:
http://arxiv.org/abs/2310.08900
Autor:
Takahashi, Shuta, Arimoto, Makoto, Goto, Hatsune, Kondo, Ryuji, Yonetoku, Daisuke, Hartmann, Robert, Strüder, Lothar, Holl, Peter, Ogino, Naoki, Sawano, Tatsuya, Hiraga, Junko, Sato, Masataka, Sakamoto, Takanori, Shen, Hsien-Chieh, Hatori, Satoshi, Ishigami, Ryoya, Doi, Akihiro, Matsuhara, Hideo
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A July 2024 1064
Autor:
Enoto, Teruaki, Ng, Mason, Hu, Chin-ping, Guver, Tolga, Jaisawal, Gaurava K., O'Connor, Brendan, Gogus, Ersin, Lien, Amy, Kisaka, Shota, Wadiasingh, Zorawar, Majid, Walid A., Pearlman, Aaron B., Arzoumanian, Zaven, Bansal, Karishma, Blumer, Harsha, Chakrabarty, Deepto, Gendreau, Keith, Ho, Wynn C. G., Kouveliotou, Chryssa, Ray, Paul S., Strohmayer, Tod E., Younes, George, Palmer, David M., Sakamoto, Takanori, Akahori, Takuya, Eie, Sujin
The soft gamma-ray repeater Swift J1555.2-5402 was discovered by means of a 12-ms duration short burst detected with Swift BAT on 2021 June 3. Then 1.6 hours after the first burst detection, NICER started daily monitoring of this X-ray source for a m
Externí odkaz:
http://arxiv.org/abs/2108.02939
Autor:
Arimoto, Makoto, Asada, Hideki, Cherry, Michael L., Fujii, Michiko S., Fukazawa, Yasushi, Harada, Akira, Hayama, Kazuhiro, Hosokawa, Takashi, Ioka, Kunihito, Itoh, Yoichi, Kanda, Nobuyuki, Kawabata, Koji S., Kawaguchi, Kyohei, Kawai, Nobuyuki, Kobayashi, Tsutomu, Kohri, Kazunori, Koshio, Yusuke, Kotake, Kei, Kumamoto, Jun, Machida, Masahiro N., Matsufuru, Hideo, Mihara, Tatehiro, Mori, Masaki, Morokuma, Tomoki, Mukohyama, Shinji, Nakano, Hiroyuki, Narikawa, Tatsuya, Negoro, Hitoshi, Nishizawa, Atsushi, Ohgami, Takayuki, Omukai, Kazuyuki, Sakamoto, Takanori, Sako, Shigeyuki, Sasada, Mahito, Sekiguchi, Yuichiro, Serino, Motoko, Soda, Jiro, Sugita, Satoshi, Sumiyoshi, Kohsuke, Susa, Hajime, Suyama, Teruaki, Takahashi, Hirotaka, Takahashi, Kazuya, Takiwaki, Tomoya, Tanaka, Takahiro, Tanaka, Masaomi, Tanikawa, Ataru, Tominaga, Nozomu, Uchikata, Nami, Utsumi, Yousuke, Vagins, Mark R., Yamada, Kei, Yoshida, Michitoshi
The detections of gravitational waves (GW) by LIGO/Virgo collaborations provide various possibilities to physics and astronomy. We are quite sure that GW observations will develop a lot both in precision and in number owing to the continuous works fo
Externí odkaz:
http://arxiv.org/abs/2104.02445
Autor:
Obayashi, Kaori, Toriyama, Ayumu, Murakoshi, Mayu, Sato, Yuri, Tanaka, Shuta J., Sakamoto, Takanori, Yamazaki, Ryo
Publikováno v:
In Journal of High Energy Astrophysics March 2024 41:1-12
We analyze the ultraviolet (UV) and X-ray data of NGC 1275 obtained with {\it Swift}/UVOT, XRT, BAT and {\it Fermi} Large Area Telescope over about 10 years to investigate the origin of the nuclear emission from NGC 1275. We confirm that the UV and s
Externí odkaz:
http://arxiv.org/abs/2011.10299
Autor:
Hu, Chin-Ping, Begicarslan, Beste, Guver, Tolga, Enoto, Teruaki, Younes, George, Sakamoto, Takanori, Ray, Paul S., Strohmayer, Tod E., Guillot, Sebastien, Arzoumanian, Zaven, Palmer, David M., Gendreau, Keith C., Malacaria, C., Wadiasingh, Zorawar, Jaisawal, Gaurava K., Majid, Walid A.
We report on the hard X-ray burst and the first ~100 days NICER monitoring of the soft X-ray temporal and spectral evolution of the newly-discovered magnetar Swift J1818.0-1607. The burst properties are typical of magnetars with a duration of $T_{90}
Externí odkaz:
http://arxiv.org/abs/2009.00231