Complex Spectrum Circle Centroid for Microphone-Array-Based Noisy Speech Recognition (2007)
Shigeki Sagayama, Takashi Okajima, Yutaka Kamamoto, Takuya Nishimoto
We propose a novel principle based on Complex Spectrum Circle Centroid (CSCC) for restoring complex spectrum of the target signal from multiple microphone input signals in a noisy environment. If...
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...
Revealing the high energy emission from the obscured Seyfert galaxy MCG−5–23–16 with Suzaku (2007)
Reeves, James N., Awaki, Hisamitsu, Dewangan, Gulab C., Fabian, Andy C., Fukazawa, Yasushi, Gallo, Luigi, ...
The X-ray telescope onboard Suzaku (2007)
Serlemitsos, Peter J., Soong, Yang, Chan, Kai-Wing, Okajima, Takashi, Lehan, John P., Maeda, Yoshitomo, ...
The X-ray observatory Suzaku (2007)
Mitsuda, Kazuhisa, Bautz, Mark, Inoue, Hajime, Kelley, Richard L., Koyama, Katsuji, Kunieda, Hideyo, ...
Suzaku observation of 1H0707-495: puzzling spectral drop around 7 keV (2007)
Hayashida, Kiyoshi, Anabuki, Naohisa, Gallo, Luigi, Iwasawa, Kazushi, Tanaka, Yasuo, Miniutti, Giovanni, ...
On-orbit performance of the X-ray telescopes and thermal wobbling of the Suzaku satellite (2007)
Maeda, Yoshitomo, Ebara, Masatoshi, Fujimoto, Ryuichi, Hayashi, Takayuki, Inoue, Hirohiko, Ishisaki, Yoshitaka, ...
A Stellar-mass Black Hole in the Ultra-luminous X-ray Source M82 X-1? (2006)
Okajima, Takashi, Ebisawa, Ken, Kawaguchi, Toshihiro
We have analyzed the archival XMM-Newton data of the bright Ultra-Luminous X-ray Source (ULX) M82 X-1 with an 105 ksec exposure when the source was in the steady state. Thanks to the high photon...
Revealing the High Energy Emission from the Obscured Seyfert Galaxy MCG -5-23-16 with Suzaku (2006)
Reeves, James N., Awaki, Hisamitsu, Dewangan, Gulab C., Fabian, Andy C., Fukazawa, Yasushi, Gallo, Luigi, ...
We report on a 100 ks Suzaku observation of the bright, nearby (z=0.008486) Seyfert 1.9 galaxy MCG -5-23-16. The broad-band (0.4-100 keV) X-ray spectrum allows us to determine the nature of the high...
Yaqoob, Tahir, Murphy, Kendrah D., Griffiths, Richard E., Haba, Yoshito, Inoue, Hajime, Itoh, Takeshi, ...
We present detailed time-averaged X-ray spectroscopy in the 0.5--10 keV band of the Seyfert~1.9 galaxy NGC 2992 with the Suzaku X-ray Imaging Spectrometers (XIS). We model the complex continuum in...
Itoh, Kei, Kunieda, Hideyo, Maeda, Yoshitomo, Misaki, Kazutami, Serlemitos, Peter J., Shibata, Ryo, ...
Ho, Luis C., Terashima, Yuichi, Okajima, Takashi
The globular cluster M15 has recently been found to host a possible central black hole with a mass of ~2000 solar masses. A deep, high-resolution Chandra image failed to detect the "nucleus" of the...