Zobrazeno 1 - 10
of 837
pro vyhledávání: '"Kokubun M"'
Autor:
Tsuchiya, H., Enoto, T., Iwata, K., Yamada, S., Yuasa, T., Kitaguchi, T., Kawaharada, M., Nakazawa, K., Kokubun, M., Kato, H., Okano, M., Tamagawa, T., Makishima, K.
Publikováno v:
Phys. Rev. Lett. 111, 015001 (2013)
We report the first observation of 3$-$30 MeV prolonged gamma-ray emission that was abruptly terminated by lightning. The gamma-ray detection was made during winter thunderstorms on December 30, 2010 by the Gamma-Ray Observation of Winter THunderclou
Externí odkaz:
http://arxiv.org/abs/1306.2388
Autor:
Tsuchiya, H., Enoto, T., Yamada, S., Yuasa, T., Nakazawa, K., Kitaguchi, T., Kawaharada, M., Kokubun, M., Kato, H., Okano, M., Makishima, K.
The Gamma-Ray Observation of Winter THunderclouds (GROWTH) experiment, consisting of two radiation-detection subsystems, has been operating since 2006 on the premises of Kashiwazaki-Kariwa nuclear power plant located at the coastal area of Japan Sea.
Externí odkaz:
http://arxiv.org/abs/1102.4024
Autor:
Hoshino, A., Henry, J. P., Sato, K., Akamatsu, H., Yokota, W., Sasaki, S., Ishisaki, Y., Ohashi, T., Bautz, M., Fukazawa, Y., Kawano, N., Furuzawa, A., Hayashida, K., Tawa, T., Hughes, J., Kokubun, M., Tamura, T.
We present X-ray observations of the northern outskirts of the relaxed galaxy cluster A1413 with Suzaku, whose XIS instrument has the low intrinsic background needed to make measurements of these low surface brightness regions. We excise 15 point sou
Externí odkaz:
http://arxiv.org/abs/1001.5133
Autor:
Maeda, Y., Uchiyama, Y., Bamba, A., Kosugi, H., Tsunemi, H., Helder, E. A., Vink, J., Kodaka, N., Terada, Y., Fukazawa, Y., Hiraga, J., Hughes, J. P., Kokubun, M., Kouzu, T., Matsumoto, H., Miyata, E., Nakamura, R., Okada, S., Someya, K., Tamagawa, T., Tamura, K., Totsuka, K., Tsuboi, Y., Ezoe, Y., Holt, S. S., Ishida, M., Kamae, T., Petre, R., Takahashi, T.
Suzaku X-ray observations of a young supernova remnant, Cassiopeia A, were carried out. K-shell transition lines from highly ionized ions of various elements were detected, including Chromium (Cr-Kalpha at 5.61 keV). The X-ray continuum spectra were
Externí odkaz:
http://arxiv.org/abs/0912.5020
Autor:
Takahashi, I., Kawaharada, M., Makishima, K., Matsushita, K., Fukazawa, Y., Ikebe, Y., Kitaguchi, T., Kokubun, M., Nakazawa, K., Okuyama, S., Ota, N., Tamura, T.
Publikováno v:
Astrophys.J.701:377-395,2009
X-ray data of the Centaurus cluster, obtained with {\it XMM-Newton} for 45 ksec, were analyzed. Deprojected EPIC spectra from concentric thin shell regions were reproduced equally well by a single-phase plasma emission model, or by a two-phase model
Externí odkaz:
http://arxiv.org/abs/0907.1468
Autor:
Enoto, T., Nakagawa, Y. E., Rea, N., Esposito, P., Gotz, D., Hurley, K., Israel, G. L., Kokubun, M., Makishima, K., Mereghetti, S., Murakami, H., Nakazawa, K., Sakamoto, T., Stella, L., Tiengo, A., Turolla, R., Yamada, S., Yamaoka, K., Yoshida, A., Zane, S.
We present the first Suzaku observation of the new Soft Gamma Repeater SGR 0501+4516, performed on 2008 August 26, four days after the onset of bursting activity of this new member of the magnetar family. The soft X-ray persistent emission was detect
Externí odkaz:
http://arxiv.org/abs/0901.3453
Autor:
Paizis, A., Ebisawa, K., Takahashi, H., Dotani, T., Kohmura, T., Kokubun, M., Rodriguez, J., Ueda, Y., Walter, R., Yamada, S., Yamaoka, K., Yuasa, T.
The broad-band 1-300 keV Suzaku spectrum of IGR J17497-2821, the X-ray transient discovered by INTEGRAL in September 2006, is presented. Suzaku observed IGR J17497-2821 on September 25, eight days after its discovery, for a net exposure of about 53 k
Externí odkaz:
http://arxiv.org/abs/0811.2663
Autor:
Takahashi, T., Kelley, R., Mitsuda, K., Kunieda, H., Petre, R., White, N., Dotani, T., Fujimoto, R., Fukazawa, Y., Hayashida, K., Ishida, M., Ishisaki, Y., Kokubun, M., Makishima, K., Koyama, K., Madejski, G. M., Mori, K., Mushotzky, R., Nakazawa, K., Ogasaka, Y., Ohashi, T., Ozaki, M., Tajima, H., Tashiro, M., Terada, Y., Tsunemi, H., Tsuru, T. G., Ueda, Y., Yamasaki, N., Watanabe, S., team, the NeXT
The NeXT (New exploration X-ray Telescope), the new Japanese X-ray Astronomy Satellite following Suzaku, is an international X-ray mission which is currently planed for launch in 2013. NeXT is a combination of wide band X-ray spectroscopy (3 - 80 keV
Externí odkaz:
http://arxiv.org/abs/0807.2007
Autor:
Tamagawa, T., Hayato, A., Nakamura, S., Terada, Y., Bamba, A., Hiraga, J. S., Hughes, J. P., Hwang, U., Kataoka, J., Kinugasa, K., Kunieda, H., Tanaka, T., Tsunemi, H., Ueno, M., Holt, S. S., Kokubun, M., Miyata, E., Szymkowiak, A., Takahashi, T., Tamura, K., Ueno, D., Makishima, K.
Publikováno v:
Publ.Astron.Soc.Jap. 61 (2009) 167-174
Tycho's supernova remnant was observed by the XIS and HXD instruments onboard the Suzaku satellite on 2006 June 26-29 for 92 ks. The spectrum up to 30 keV was well fitted with a two-component model, consisting of a power-law with photon index of 2.7
Externí odkaz:
http://arxiv.org/abs/0805.3377
Autor:
Tashiro, M. S., Terada, Y., Urata, Y., Onda, K., Kodaka, N., Endo, A., Suzuki, M., Morigami, K., Yamaoka, K., Nakagawa, Y. E., Sugita, S., Fukazawa, Y., Ohno, M., Takahashi, T., Kira, C., Uehara, T., Tamagawa, T., Enoto, T., Miyawaki, R., Nakazawa, K., Makishima, K., Sonoda, E., Yamauchi, M., Maeno, S., Tanaka, H., Hara, R., Kokubun, M., Hong, S. J., Murakami, T., Tajima, H., team, the HXD
Publikováno v:
AIP Conf.Proc.1000:162-165,2008
The Wide-band All-sky Monitor (WAM) is a function of the large lateral BGO shield of the Hard X-ray Detector (HXD) onboard Suzaku. Its large geometrical area of 800 cm^2 per side, the large stopping power for the hard X-rays and the wide-field of vie
Externí odkaz:
http://arxiv.org/abs/0802.4340