Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Ken Ebisawa"'
Autor:
XRISM Collaboration, Marc Audard, Hisamitsu Awaki, Ralf Ballhausen, Aya Bamba, Ehud Behar, Rozenn Boissay-Malaquin, Laura Brenneman, Gregory V. Brown, Lia Corrales, Elisa Costantini, Renata Cumbee, Maria Diaz Trigo, Chris Done, Tadayasu Dotani, Ken Ebisawa, Megan E. Eckart, Dominique Eckert, Teruaki Enoto, Satoshi Eguchi, Yuichiro Ezoe, Adam Foster, Ryuichi Fujimoto, Yutaka Fujita, Yasushi Fukazawa, Kotaro Fukushima, Akihiro Furuzawa, Luigi Gallo, Javier A. García, Liyi Gu, Matteo Guainazzi, Kouichi Hagino, Kenji Hamaguchi, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Natalie Hell, Edmund Hodges-Kluck, Ann Hornschemeier, Yuto Ichinohe, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Jelle Kaastra, Timothy Kallman, Erin Kara, Satoru Katsuda, Yoshiaki Kanemaru, Richard Kelley, Caroline Kilbourne, Shunji Kitamoto, Shogo Kobayashi, Takayoshi Kohmura, Aya Kubota, Maurice Leutenegger, Michael Loewenstein, Yoshitomo Maeda, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian McNamara, François Mernier, Eric D. Miller, Jon M. Miller, Ikuyuki Mitsuishi, Misaki Mizumoto, Tsunefumi Mizuno, Koji Mori, Koji Mukai, Hiroshi Murakami, Richard Mushotzky, Hiroshi Nakajima, Kazuhiro Nakazawa, Jan-Uwe Ness, Kumiko Nobukawa, Masayoshi Nobukawa, Hirofumi Noda, Hirokazu Odaka, Shoji Ogawa, Anna Ogorzalek, Takashi Okajima, Naomi Ota, Stephane Paltani, Robert Petre, Paul Plucinsky, Frederick S. Porter, Katja Pottschmidt, Kosuke Sato, Toshiki Sato, Makoto Sawada, Hiromi Seta, Megumi Shidatsu, Aurora Simionescu, Randall Smith, Hiromasa Suzuki, Andrew Szymkowiak, Hiromitsu Takahashi, Mai Takeo, Toru Tamagawa, Keisuke Tamura, Takaaki Tanaka, Atsushi Tanimoto, Makoto Tashiro, Yukikatsu Terada, Yuichi Terashima, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Tsuru, Hiroyuki Uchida, Nagomi Uchida, Yuusuke Uchida, Hideki Uchiyama, Yoshihiro Ueda, Shinichiro Uno, Jacco Vink, Shin Watanabe, Brian J. Williams, Satoshi Yamada, Shinya Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Tahir Yaqoob, Tomokage Yoneyama, Tessei Yoshida, Mihoko Yukita, Irina Zhuravleva, Xin Xiang, Takeo Minezaki, Margaret Buhariwalla, Dimitra Gerolymatou, Scott Hagen
Publikováno v:
The Astrophysical Journal Letters, Vol 973, Iss 1, p L25 (2024)
We present an analysis of the first two XRISM/Resolve spectra of the well-known Seyfert-1.5 active galactic nucleus (AGN) in NGC 4151, obtained in 2023 December. Our work focuses on the nature of the narrow Fe K _α emission line at 6.4 keV, the stro
Externí odkaz:
https://doaj.org/article/5d83f682f7f5495191f4acac34927e55
Autor:
Miki Kurihara, Wataru Buz Iwakiri, Masahiro Tsujimoto, Ken Ebisawa, Shin Toriumi, Shinsuke Imada, Yohko Tsuboi, Kazuki Usui, Keith C. Gendreau, Zaven Arzoumanian
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 135 (2024)
We detected a giant X-ray flare from the RS CVn–type binary star UX Ari using the Monitor of All-sky X-ray Image on 2020 August 17 and started a series of Neutron star Interior Composition Explorer observations 89 minutes later. For a week, the ent
Externí odkaz:
https://doaj.org/article/9f56401a99804efab2491e0df805d39f
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 52 (2023)
Circinus X-1 (Cir X-1) is a neutron star binary with an elliptical orbit of 16.6 days. The source is unique for its extreme youth, providing a key to understanding early binary evolution. However, its X-ray variability is too complex to reach a clear
Externí odkaz:
https://doaj.org/article/1528ce4f35fd4b4990fe18dec1ecaed8
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 46 (2023)
Supersoft X-ray sources (SSSs) are white dwarf (WD) binaries that radiate almost entirely below ∼1 keV. Their X-ray spectra are often complex when viewed with the X-ray grating spectrometers, where numerous emission and absorption features are inte
Externí odkaz:
https://doaj.org/article/6a6c18edc1e240d594650d4bb444ede4
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 47 (2023)
Recent radiation-magnetohydrodynamic simulations of active galactic nuclei predict the presence of the disk winds, which may become unstable and turn into fragmented clumps far from the central black hole. These inner winds and the outer clumps may b
Externí odkaz:
https://doaj.org/article/8aee03e379f14d9b9e0d855a9563749f
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 2, p 92 (2023)
MAXI J1820+070 is a transient black hole binary discovered on 2018 March 11. The unprecedented rich statistics brought by the NICER X-ray telescope allow detailed timing analyses up to ∼1 kHz uncompromised by photon shot noise. To estimate the time
Externí odkaz:
https://doaj.org/article/0db985490f714232944677127e0dc1c6
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 1, Iss 1, Pp 222-226 (2014)
We present the results of X-ray and Near-Infrared observations of the Galactic Ridge X-ray Emission (GRXE). We extracted 2,002 X-ray point sources in the Chandra Bulge Field (l =0°.113, b = 1°.424) down to ~10-14.8 ergscm-2s-1 in 2-8 keV band with
Externí odkaz:
https://doaj.org/article/827fa40b194e4093b47b48ddfb62de31
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 1, Iss 1, Pp 146-150 (2014)
We present systematic X-ray data analysis of the Seyfert galaxies observed by Suzaku to study origin of their hard X-ray (2 - 40 keV) variations. In particular, we examine if the "Variable Partial Covering (VPC) model" proposed by Miyakawa, Ebisawa a
Externí odkaz:
https://doaj.org/article/4dd95b5184f14426881f6284bfe71e95
Autor:
Satoshi Eguchi, Makoto Tashiro, Yukikatsu Terada, Hiromitsu Takahashi, Masayoshi Nobukawa, Tsunefumi Mizuno, Shin'ichiro Uno, Aya Kubota, Kazuhiro Nakazawa, Shin Watanabe, Ryo Iizuka, Rie Sato, Tomokage Yoneyama, Chris Baluta, Ken Ebisawa, Yasushi Fukazawa, Katsuhiro Hayashi, So Kato, Satoru Katsuda, Takao Kitaguchi, Hirokazu Odaka, Masanori Ohno, Naomi Ota, Minami Sakama, Ryohei Sato, Megumi Shidatsu, Yasuharu Sugawara, Tsubasa Tamba, Atsushi Tanimoto, Yuichi Terashima, Yohko Tsuboi, Nagomi Uchida, Yuusuke Uchida, Hideki Uchiyama, Shigeo Yamauchi, Masaaki Sakano, Tessei Yoshida, Satoshi Yamada
Publikováno v:
Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray.
NGC 5548 is a very well-studied Seyfert 1 galaxy in broad wavelengths. Previous multiwavelength observation campaigns have indicated that its multiple absorbers are highly variable and complex. A previous study applied a two-zone partial covering mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa475204449a5fb32907b7adbb14602e
http://arxiv.org/abs/2205.03021
http://arxiv.org/abs/2205.03021