Suzaku observation of the giant radio galaxy 3C 326 (2009)
Isobe, Naoki, Tashiro, Makoto S., Gandhi, Poshak, Hayato, Asami, Nagai, Hiroshi, Hada, Kazuhiro, ...
A Suzaku observation of a giant radio galaxy, 3C 326, which has a physical size of about 2 Mpc, was conducted on 2008 January 19 -- 21. In addition to several X-ray sources, diffuse emission was...
The MAXI Mission on the ISS: Science and Instruments for Monitoring All Sky X-Ray Images (2009)
Matsuoka, Masaru, Kawasaki, Kazuyoshi, Ueno, Shiro, Tomida, Hiroshi, Kohama, Mitsuhiro, Suzuki, Motoko, ...
The MAXI (Monitor of All-sky X-ray Image) mission is the first astronomical payload to be installed on the Japanese Experiment Module-Exposed Facility (JEM-EF) on the ISS. It is scheduled for launch...
Seta, Hiromi, Isobe, Naoki, Tashiro, Makoto S., Yaji, Yuichi, Arai, Akira, Fukuhara, Masayuki, ...
Suzaku observations of the blazar OJ 287 were performed in 2007 April 10--13 and November 7--9. They correspond to a quiescent and a flaring state, respectively. The X-ray spectra can be well...
Suzaku Observation of the Metallicity in the Interstellar Medium of NGC 4258 (2009)
Konami, Saori, Sato, Kosuke, Matsushita, Kyoko, Yamada, Shin'ya, Isobe, Naoki, Senda, Atsushi, ...
The Suzaku X-ray satellite observed the nearby spiral galaxy NGC 4258 for a total good exposure time of 100 ks. We present an analysis of the Suzaku XIS data, in which we confirm that the 0.5--2 keV...
Modeling and Reproducibility of Suzaku HXD PIN/GSO Background (2009)
Fukazawa, Yasushi, Mizuno, Tsunefumi, Watanabe, Shin, Kokubun, Motohide, Takahashi, Hiromitsu, Kawano, Naomi, ...
Suzaku Hard X-ray Detector (HXD) achieved the lowest background level than any other previously or currently operational missions sensitive in the energy range of 10--600 keV, by utilizing PIN...
Spectral transitions of an ultraluminous X-ray source, NGC 2403 Source 3 (2008)
Isobe, Naoki, Makishima, Kazuo, Takahashi, Hiromitsu, Mizuno, Tsunefumi, Miyawaki, Ryouhei, Gandhi, Poshak, ...
Suzaku observation of an ultraluminous X-ray source, NGC 2403 Source 3, performed on 2006 March 16--17, is reported. The Suzaku XIS spectrum of Source 3 was described with a multi-color...
Hard X-Ray Spectrum from West Lobe of Radio Galaxy Fornax A Observed with Suzaku (2008)
Tashiro, Makoto S., Isobe, Naoki, Seta, Hiromi, Matsuta, Keiko, Yaji, Yuichi
An observation of the West lobe of radio galaxy Fornax A (NGC 1316) with Suzaku is reported. Since Feigelson et al. (1995) and Kaneda et al. (1995) discovered the cosmic microwave background boosted...
Kawano, Naomi, Fukazawa, Yasushi, Nishino, Sho, Nakazawa, Kazuhiro, Kitaguchi, Takao, Makishima, Kazuo, ...
Clusters of galaxies are among the best candidates for particle acceleration sources in the universe, a signature of which is non-thermal hard X-ray emission from the accelerated relativistic...
Tokoi, Kazuyo, Sato, Kosuke, Ishisaki, Yoshitaka, Ohashi, Takaya, Yamasaki, Noriko Y., Nakazawa, Kazuhiro, ...
We present results of 120 ks observation of a compact group of galaxies HCG~62 ($z=0.0145$) with Suzaku XIS and HXD-PIN\@. The XIS spectra for four annular regions were fitted with two temperature...
Discovery of a bright transient ultraluminous X-ray source Suzaku J1305-4931 in NGC 4945 (2007)
Isobe, Naoki, Kubota, Aya, Makishima, Kazuo, Gandhi, Poshak, Griffiths, Richard E., Dewangan, Gulab C., ...
This paper reports the discovery of a bright X-ray transient source, Suzaku J1305-4913, in the south-west arm of the nearby Seyfert II galaxy NGC 4945. It was detected at a 0.5 -- 10 keV flux of $2.2...
Suzaku wide-band X-ray Spectroscopy of the Seyfert 2 AGN in NGC 4945 (2007)
Itoh, Takeshi, Done, Chris, Makishima, Kazuo, Madejski, Grzegorz, Awaki, Hisamitsu, Isobe, Naoki, ...
Suzaku observed a nearby Seyfert 2 galaxy NGC4945, which hosts one of the brightest active galactic nuclei above 20 keV. Combining data from the X-ray CCD camera (XIS) and the Hard X-ray Detector...
Wide-band spectroscopy of the Compton thick Seyfert 2 galaxy Mrk 3 with Suzaku (2007)
Awaki, Hisamitsu, Anabuki, Naohisa, Fukazawa, Yasuchi, Gallo, Luigi, Ikeda, Shinya, Isobe, Naoki, ...
We obtained a wide-band spectrum of the Compton-thick Seyfert 2 galaxy Mrk 3 with Suzaku. The observed spectrum was clearly resolved into weak, soft power-law emission, a heavily absorbed power-law...
The X-ray observatory Suzaku (2007)
Mitsuda, Kazuhisa, Bautz, Mark, Inoue, Hajime, Kelley, Richard L., Koyama, Katsuji, Kunieda, Hideyo, ...
Probing the disk-jet connection of the radio galaxy 3C 120 observed with Suzaku (2007)
Kataoka, Jun, Reeves, James N., Iwasawa, Kazushi, Markowitz, Alex G., Mushotzky, Richard F., Arimoto, Makoto, ...
Probing the Disk-jet Connection of the Radio Galaxy 3C120 Observed with Suzaku (2006)
Kataoka, Jun, Reeves, James N., Iwasawa, Kazushi, Markowitz, Alex G., Mushotzky, Richard F., Arimoto, Makoto, ...
Broad line radio galaxies (BLRGs) are a rare type of radio-loud AGN, in which the broad optical permitted emission lines have been detected in addition to the extended jet emission. Here we report on...
Studies of the role of steroid hormone in the regulation of oocyte maturation in cattle (2006)
Wang, Hai, Isobe, Naoki, Kumamoto, Kanako, Yamashiro, Hideaki, Yamashita, Yasuhisa, Terada, Takato
Abstract Background The objective of this study was to investigate whether the steroid hormone(s) secreted from cumulus-oocyte complexes (COCs) is a prerequisite for bovine oocyte maturation and...
Maniwa, Jiro, Izumi, Shunsuke, Isobe, Naoki, Terada, Takato
Abstract Background The objective of this study was to identify substantially increased proteins in bovine cystic follicular fluid (FF) in order to clarify the pathology and etiology of bovine...
Masayuki Shimada, Masahide Nishibori, Naoki Isobe, Natsuko Kawano, Takato Terada
We investigated the formation of LH receptor (LHR) in cumulus cells surrounding porcine oocytes and the role of LHR in meiotic maturation of oocytes. At least three splice variants of LHR mRNA were...
Detection of Excess Hard X-ray Emission from the Group of Galaxies HCG62 (2000)
Fukazawa, Yasushi, Nakazawa, Kazuhiro, Isobe, Naoki, Makishima, Kazuo, Matsushita, Kyoko, Ohashi, Takaya, ...
From the group of galaxies HCG62, we detected an excess hard X-ray emission in energies above $\sim 4$ keV with \A SCA. The excess emission is spatially extended up to $\sim10'$ from the group...
Observations of the BL Lacertae Object OJ 287 in 1997 April and Nov ember (2000)
Isobe, Naoki, Tashiro, Makoto, Sugiho, Masahiko, Makishima, Kazuo
X-ray properties of the BL Lacertae object OJ 287, observed with ASCA on 1997 April 26 and November 17, are reported. The 0.5 -- 10 keV flux was lower than those obtained in previous X-ray...
Studies of the role of steroid hormone in the regulation of oocyte maturation in cattle
Wang, Hai Feng, Isobe, Naoki, Kumamoto, Kanako, Yamashiro, Hideaki, Yamashita, Yasuhisa, Terada, Takato