Paper list

Refereed papers

2004

"Unusual X-ray transients in the Galactic Centre"
Masaaki Sakano, Robert S. Warwick, Anne Decourchelle, and Q. Daniel Wang,
2004, MNRAS, in press (preprint: tar.gz(2.90MB), pdf.gz(498kB)) (astro-ph/0412236)
"XMM-Newton observations of Sagittarius A East"
Masaaki Sakano, Robert S. Warwick, Anne Decourchelle, and Peter Predehl,
2004, MNRAS, 350, 129--139 (preprint: tar.gz(1.20MB), pdf.gz(601kB)) (astro-ph/0312541)
"Three years progress of the XMM-Newton Galactic Centre/Plane Survey"
Masaaki Sakano, Robert S. Warwick, Alex Hands, and Anne Decourchelle,
2004, Memorie della Societa' Astronomica Italiana, 75, N.3, 498--499
(Proc. of EPIC Consortium 2003, held at Palermo, Sicilia, Italy, 14--16 October 2003) (tar.gz(1.6MB), pdf.gz(159kB))
"Sgr A East and its surroundings observed in X-rays"
Masaaki Sakano, Robert S. Warwick, and Anne Decourchelle,
2004, Advances in Space Research, 33, 403--408 (tar.gz(765kB), pdf.gz(255kB)) (astro-ph/0308373)

2003

"The discovery of a new non-thermal X-ray filament near the Galactic Centre"
Masaaki Sakano, Robert S. Warwick, Anne Decourchelle, and Peter Predehl,
2003, MNRAS, 340, 747--751 (preprint: tar.gz(765kB), pdf.gz(255kB)) (astro-ph/0211572)

2002

"ASCA X-ray source catalog in the Galactic Center region"
Masaaki Sakano, Katsuji Koyama, Hiroshi Murakami, Yoshitomo Maeda, and Shigeo Yamauchi,
2002, Astrophysical Journal Supplement, 138, 19--34 (tar.gz(3.7MB), pdf.gz(1.1MB))
"OH (1720 MHz) masers and mixed-morphology supernova remnants"
F. Yusef-Zadeh, M. Wardle, J. Rho, and M. Sakano,
2002, ApJ, 585, 319--323 (astro-ph/0211191)

2001

"X-ray source population of the Galactic center region obtained with ASCA"
Masaaki Sakano, Katsuji Koyama, Hiroshi Murakami, Yoshitomo Maeda, Shigeo Yamauchi, and The ASCA Galactic plane/center survey team,
2001, pp.314--315 (ASP Conf. Ser. 251; proceeding of 'New Century of X-ray Astronomy', Yokohama, Japan, 6-8 March 2001, eds. H. Inoue and H. Kunieda) (tar.gz(10kB), ps.gz(39kB))
"Diffuse hard X-ray emission in the Galactic Bulge"
Motohide Kokubun, Kazuo Makishima, Masaaki Sakano, Shigeo Yamauchi, and Ken Ebisawa,
2001, pp.304--305 (ASP Conf. Ser. 251; proceeding of 'New Century of X-ray Astronomy', Yokohama, Japan, 6-8 March 2001, eds. H. Inoue and H. Kunieda)
"A Chandra observation of the X-ray reflection nebula Sgr B2"
Hiroshi Murakami, Katsuji Koyama, Yoshitomo Maeda, and Masaaki Sakano,
2001, pp.310--311 (ASP Conf. Ser. 251; proceeding of 'New Century of X-ray Astronomy', Yokohama, Japan, 6-8 March 2001, eds. H. Inoue and H. Kunieda)
"Development of the engineering model of the X-ray CCD camera of MAXI experiment on the ISS/JEM"
T. Kamazuka, C. Natsukari, E. Miyata, H. Tsunemi, H. Tomida, M. Matsuoka, S. Ueno, M. Sakano, M. Jobashi, and I. Tanaka,
2001, pp.552--553 (ASP Conf. Ser. 251; proceeding of 'New Century of X-ray Astronomy', Yokohama, Japan, 6-8 March 2001, eds. H. Inoue and H. Kunieda)
"The status of the MAXI project for ISS: Monitor of All-sky X-ray Image"
Shiro Ueno, Masaru Matsuoka, Shigenori Komatsu, Kenichi Torii, Mutsumi Sugizaki, Hiroshi Tomida, Yuji Shirasaki, Masaaki Sakano, Weimin Yuan, Nobuyuki Kawai, Atsumasa Yoshida, Tatehiro Mihara, Hitoshi Negoro, Hiroshi Tsunemi, and Emi Miyata,
2001, pp.598--599 (ASP Conf. Ser. 251; proceeding of 'New Century of X-ray Astronomy', Yokohama, Japan, 6-8 March 2001, eds. H. Inoue and H. Kunieda)
"Estimation of central black hole masses in low-luminosity active galactic nuclei"
Hisamitsu Awaki, Yuichi Terashima, Kiyoshi Hayashida, Masaaki Sakano,
2001, Pub. Astr. Soc. Japan, 53 (No.4), 647-652

2000

"Discovery of a Slow X-Ray Pulsator, AX J1740.1-2847, in the Galactic Center Region"
M. Sakano, Ken'ichi Torii, K. Koyama, Y. Maeda, and S. Yamauchi,
2000, Pub. Astr. Soc. Japan, 52 (No.6), 1141--1145 (tar.gz(89kB), ps.gz(123kB))
``X-ray population of the Galactic Center region'',
Masaaki Sakano,
Ph.D. thesis,
Kyoto University (2000)
""ASCA Observations of the Jet Source XTE J1748-288"
T. Kotani, N. Kawai, F. Nagase, M. Namiki, M. Sakano, T. Takeshima, Y. Ueda, K. Yamaoka, R. M. Hjellming
2000, Astrophysical Journal, 543, L133-L136
"Observation of Fe-line emission from Sagittarius B2 -- Evidence for past activities of our Galaxy"
H. Murakami, K. Koyama, Y. Maeda, M. Sakano, M. Nishiuchi, and M. Tsujimoto,
2000b, Advances in Space Research, 25(3/4), 575--578
"X-ray detection from shell-like SNR G359.1-0.5"
J. Yokogawa, M. Sakano, K. Koyama, and S. Yamauchi,
2000, Advances in Space Research, 25(3/4), 571--574
``Results from the ASCA Large Sky Survey --- Nature of faint X-ray sources and the implications for the origin of the CXB'',
Y. Ueda, M. Akiyama, G. Hasinger, H. Inoue, Y. Ishisaki, K. Makishima, Y. Ogasaka, K. Ohta, M. Sakano, T. Takahashi, T. Tsuru, W. Voges, T. Yamada,
Advances in Space Research, (2000) 25(3-4), pp.839-844
"Optical Identification of the ASCA Large Sky Survey"
M. Akiyama, K. Ohta, T. Yamada, N. Kashikawa, M. Yagi, W. Kawasaki, M. Sakano, T. Tsuru, Y. Ueda, T. Takahashi, I. Lehmann, G. Hasinger, and W. Voges,
2000, Astrophysical Journal, 532, 700--727 (ADS)
``The hardest X-ray source discovered in the ASCA Large Sky Survey: Implications to the cosmic X-ray background'',
M. Sakano, K. Koyama, T. Tsuru, H. Awaki, Y. Ueda, T. Takahashi, M. Akiyama, K. Ohta, T. Yamada,
(Advances in Space Research, 2000, 25(3-4), pp.849--852)
"Diffuse X-ray emission around the Galactic Center"
M. Sakano, K. Koyama, Y. Maeda, and the ASCA Galactic Plane Survey team,
2000, Advances in Space Research, 25(3/4), 575--578
``Ground Calibration of X-Ray CCD Camera XIS Onboard ASTRO-E'',
Tsuru, T.; Nishiuchi, M.; Awaki, H.; Hamaguchi, K.; Koyama, K.; Tomida, H.; Sakano, M.; ASTRO-E XIS Team,
Advances in Space Research, (2000) 25(3-4), pp.885-888
"Deep X-Ray Observations of Supernova Remnants G359.1-0.5 and G359.0-0.9 with ASCA"
A. Bamba, J. Yokogawa, M. Sakano, and K. Koyama,
2000, Pub. Astr. Soc. Japan, 52, 259--266 (ADS)
"AX J1747.1-2845 and the Galactic Center Region"
H. Murakami, M. Sakano, K. Koyama, T. Furusho, and T. Sakamoto,
2000, IAU Circ., 7379, 3 (ADS)
"AX J1740.2-2848"
M. Sakano and K. Koyama,
2000, IAU Circ., 7364, 2 (ADS)
"ASCA Observations of the Sagittarius B2 Cloud: An X-Ray Reflection Nebula"
H. Murakami, K. Koyama, M. Sakano, M. Tsujimoto, and Y. Maeda,
2000, Astrophysical Journal, 534, 283--290 (ADS)
"ASCA observations of the new jet system XTE J1748-288"
T. Kotani, N. Kawai, F. Nagase, M. Namiki, M. Sakano, T. Takeshima, Y. Ueda, and M. Matsuoka,
2000, Astrophysical Letters and Communications, submitted

1999

"The X-ray global view of the Galactic Center region with the ASCA survey"
M. Sakano, K. Koyama, M. Nishiuchi, J. Yokogawa, and Y. Maeda,
1999c, Astron. Nachr., 320, 330
"Mass estimation of cold matters in the Galactic Center region using bright hard X-ray sources"
M. Sakano, K. Koyama, M. Nishiuchi, J. Yokogawa, and Y. Maeda,
1999b, Advances in Space Research, 23(5/6), 969--972
"An X-ray reflection nebula Sgr B2 -- A New Category of X-ray Astronomy"
H. Murakami, K. Koyama, Y. Maeda, and M. Sakano,
1999, Astron. Nachr., 320, 325
"X-ray activities in the galactic center region"
Y. Maeda, K. Koyama, K. Imanishi, H. Murakami, M. Nishiuchi, M. Sakano, M. Tsujimoto, J. Yokogawa, S. Yamauchi, and The ASCA Galactic Plane Survey team,
1999, Astronomische Nachrichten, 320, 177--178 (ADS)
"Time variability of low-luminosity AGNs"
H. Awaki, M. Sakano, Y. Terashima, and K. Hayashida,
1999, Astronomische Nachrichten, 320, 308--308 (ADS)
"The X-ray global view of the Galactic Center region with the ASCA survey"
M. Sakano, K. Koyama, J. Yokogawa, H. Murakami, M. Nishiuchi, Y. Maeda, and S. Yamauchi,
1999, Astronomische Nachrichten, 320, 330--330 (ADS)
"Nature of hard X-ray sources from optical identifications of the ASCA Large Sky Survey"
M. Akiyama, K. Ohta, T. Yamada, Y. Ueda, T. Takahasi, M. Sakano, T. Tsuru, I. Lehmann, and G. Hasinger,
1999, Astronomische Nachrichten, 320, 255--256 (ADS)
"Mass estimation of cold matters in the galactic center region using bright hard X-ray sources"
M. Sakano, K. Koyama, M. Nishiuchi, J. Yokogawa, and Y. Maeda,
1999, Advances in Space Research, 23(5-6), 969--972 (ADS)
"LOG N-LOG S Relations and Spectral Properties of Sources from the ASCA Large Sky Survey: Their Implications for the Origin of the Cosmic X-Ray Background (CXB)"
Y. Ueda, T. Takahashi, H. Inoue, T. Tsuru, M. Sakano, Y. Ishisaki, Y. Ogasaka, K. Makishima, T. Yamada, M. Akiyama, and K. Ohta,
1999, Astrophysical Journal, 518, 656--671 (ADS)
"Further Studies of 1E 1740.7-2942 with ASCA"
M. Sakano, K. Imanishi, M. Tsujimoto, K. Koyama, and Y. Maeda,
1999, Astrophysical Journal, 520, 316--323 (ADS)
"An X-ray reflection nebula Sgr B2 - a new category of X-ray astronomy"
H. Murakami, K. Koyama, Y. Maeda, M. Sakano, and M. Tsujimoto,
1999, Astronomische Nachrichten, 320, 325--325 (ADS)

1998

"The Hardest X-Ray Source in the ASCA Large Sky Survey: Discovery of a New Type 2 Seyfert"
M. Sakano, K. Koyama, T. Tsuru, H. Awaki, Y. Ueda, T. Takahashi, M. Akiyama, K. Ohta, and T. Yamada,
1998, Astrophysical Journal, 505, 129--133 (ADS)
"Sky surveys with ASCA -- Large Sky Survey"
Y. Ueda, T. Takahashi, H. Inoue, T. Tsuru, M. Sakano, K. Ohta, K. Akiyama, Y. Ishisaki, Y. Ogasaka, K. Makishima, and T. Yamada,
1998, Astronomische Nachrichten, 319, 47--50 (ADS)
"Optical Identification of the Hardest X-Ray Source in the ASCA Large-Sky Survey"
M. Akiyama, K. Ohta, T. Yamada, M. Eracleous, J.~P. Halpern, N. Kashikawa, M. Yagi, W. Kawasaki, M. Sakano, T. Tsuru, Y. Ueda, and T. Takahashi,
1998, Astrophysical Journal, 500, 173--180 (ADS)
"Optical follow-up observations of the ASCA Large Sky Survey"
M. Akiyama, K. Ohta, T. Yamada, Y. Ueda, T. Takahashi, M. Sakano, T. Tsuru, and R. Boyle,
1998, Astronomische Nachrichten, 319, 63--63 (ADS)
"Discovery of a 220 Second X-Ray Pulsar, AX J1749.2-2725"
K. Torii, K. Kinugasa, K. Katayama, T. Kohmura, H. Tsunemi, M. Sakano, M. Nishiuchi, K. Koyama, and S. Yamauchi,
1998, Astrophysical Journal, 508, 854--858 (ADS)
"A population of faint galaxies that contribute to the cosmic X-ray background"
Y. Ueda, T. Takahashi, H. Inoue, T. Tsuru, M. Sakano, Y. Ishisaki, Y. Ogasaka, K. Makishima, T. Yamada, K. Ohta, and M. Akiyama,
1998, Nature, 391, 866--868 (ADS)

1997

"GRS 1737-31"
Y. Ueda, T. Dotani, S. Uno, H. Inoue, F. Nagase, Y. Maeda, M. Sakano, P. Durouchoux, and J.~H. Swank,
1997, IAU Circ., 6627, 2 (ADS)
"ASCA Observations of Eta Carinae"
Y. Tsuboi, K. Koyama, M. Sakano, and R. Petre,
1997, Pub. Astr. Soc. Japan, 49, 85--92 (ADS)

1996

"Broad-Band X-Ray Observations of the Orion Region with ASCA"
S. Yamauchi, K. Koyama, M. Sakano, and K. Okada,
1996, Pub. Astr. Soc. Japan, 48, 719--737 (ADS)
"A New Eclipsing X-Ray Burster near the Galactic Center: A Quiescent State of the Old Transient A1742-289"
Y. Maeda, K. Koyama, M. Sakano, T. Takeshima, and S. Yamauchi,
1996, Pub. Astr. Soc. Japan, 48, 417--423 (ADS)

1995

"AX J2315-592"
K. Misaki, Y. Kamata, Y. Terashima, K. Isobe, H. Kunieda, Y. Tawara, T. Tsuru, Y. Maeda, M. Sakano, M. Akiyama, H. Sogawa, M. Ishida, and R. Fujimoto,
1995, IAU Circ., 6260, 1 (ADS)

Conference proceedings etc.

2003

"A new population of X-ray transients in the Galactic Centre",
Masaaki Sakano, Robert S. Warwick, Anne Decourchelle, and Q. Daniel Wang,
2004, Proc. of IAU Symp. 218 'Young Neutron Stars and Their Environments', July 2003, Sydney, Australia (tar.gz(71kB), pdf.gz(49kB)) (astro-ph/0310140)

2002

"Sgr A East and its surroundings --- a view with XMM-Newton",
Masaaki Sakano, Robert S. Warwick, and Anne Decourchelle,
2003, Astron. Nachr., 324, No. S1, Proc. of "the Galactic Center Workshop 2002 -- The central 300 parsecs of the Milky Way", eds., A.Cotera, H.Falcke, T.R.Geballe, S.Markoff, held on 3-8 November 2002, Kona, Hawaii, USA, pp.197--203 (tar.gz(863kB), pdf.gz(288kB))
"Discovery of a non-thermal X-ray filament in the Galactic Centre",
Masaaki Sakano, Robert S. Warwick, and Anne Decourchelle,
2003, Astron. Nachr., 324, No. S1, Proc. of "the Galactic Center Workshop 2002 -- The central 300 parsecs of the Milky Way", eds., A.Cotera, H.Falcke, T.R.Geballe, S.Markoff, held on 3-8 November 2002, Kona, Hawaii, USA, pp.235--239 (tar.gz(676kB), pdf.gz(153kB))
"Thermal SiO observations of a shell attached to the nonthermal filaments in Sgr A",
Toshihiro Handa, Masaaki Sakano, Masato Tsuboi,
2003, Astron. Nachr., 324, No. S1, Proc. of "the Galactic Center Workshop 2002 -- The central 300 parsecs of the Milky Way", eds., A.Cotera, H.Falcke, T.R.Geballe, S.Markoff, held on 3-8 November 2002, Kona, Hawaii, USA, pp.217--221
"The XMM-Newton view of the Galactic Centre",
Masaaki Sakano, Robert S. Warwick, and Anne Decourchelle,
Proc. of 'Workshop on Galaxies and Clusters of Galaxies', eds., Takaya Ohashi and Noriko Y. Yamasaki, JSPS (Tokyo), pp.9-12, held on 29-31 October 2002, Shuzenji, Japan (tar.gz(1.4MB), pdf.gz(175kB)) (astro-ph/0212464) (ADS)

2001

"SSC of MAXI experiment",
M. Sakano, H. Tomida, M. Matsuoka, S. Ueno, S. Komatsu, Y. Shirasaki, M. Sugizaki, K. Torii, W. Yuan, E. Miyata, H. Tsunemi, T. Kamazuka, C. Natsukari, M. Jobashi, I. Tanaka, N. Kawai, T. Mihara, H. Negoro, and A. Yoshida,
2001, Proc. of 'MAXI Workshop on AGN Variability', 10-11 March 2001, Nikko, Japan (tar.gz(1.5MB), ps.gz(1.5MB))

1999

``Cold matter in the Galactic Center region measured with the X-ray satellite ASCA'',
M. Sakano, Y. Maeda, M. Nishiuchi, K. Koyama, J. Yokogawa,
Proc. of ``The Central Parsecs, Galactic Center Workshop 1998'',
(1999) eds. H. Falcke, A. Cotera, W. Huschl, F. Melia, and M. Rieke, (ASP Conf. Ser. 186; pp.569--577)
M. Sakano, K. Imanishi, M. Tsujimoto, K. Koyama, Y. Maeda,
``Long-term ASCA results of 1E 1740.7-2942'',
Proceeding (by CD) of the 19th Texas symposium on high energy astrophysics (1999)

1998

``SNRs in the Galactic Center region observed with ASCA
'' M. Sakano, J. Yokogawa, H. Murakami, K. Koyama, Y. Maeda, The ASCA Galactic Plane/Center Survey team,
(in Proc. of Japanese-German Workshop on High Energy Astrophysics (MPE Report 270; pp.113--118; 1999) (Gzipped PS(in English), 6page; 272kB))
M. Sakano, M. Nishiuchi, Y. Maeda, K. Koyama, J. Yokogawa
Absorption Columns with Bright X-ray sources near the Galactic Center: --- Mass Estimation in the Galactic Center region
(IAU symp.184, "The Central Regions of the Galaxy and Galaxies", ed. Y.Sofue, 1997.8, at Kyoto, pp.443--444) in Proceeding (Gzipped PS(in English), 2page; 31K)
M. Sakano, M. Nishiuchi, Y. Maeda, K. Koyama, & J. Yokogawa,
Bright X-ray stars near the Galactic Center
(IAU symp.188, "The Hot Universe", eds. K.Koyama, 1997.8, at Kyoto, pp.366-367) in Proceeding (Gzipped PS(in English), 2page; 28K)
Y. Maeda, K. Koyama, H. Murakami, M. Sakano, K. Ebisawa, T. Takeshima, S. Yamauchi,
``ASCA Observations of the Sgr~A Region'', IAU symp.188, "The Hot Universe", eds. K.Koyama, S.Kitamoto & M.Itoh,
Dordrecht: Kluwer Academic, pp.352--353 (1998)
M. Akiyama, K. Ohta, T. Yamada, Y. Ueda, T. Takahashi, M. Sakano, T. Tsuru, B. Boyle,
``Optical follow-up observations of the ASCA Large Sky Survey'', IAU symp.188, ``The Hot Universe'', eds. K.Koyama, S.Kitamoto & M.Itoh,
Dordrecht: Kluwer Academic, pp.366--367 (1998)

1997

The hardest X-ray source detected in the ASCA Large Sky Survey
(Summer school with young astrophysists, Aug., 1997, at Hotel RUBINO Kyoto Horikawa)
proceeding (Gzipped PS(in Japanese), 1page; 30K)
ASCA study of 1E 1740.7-2942 --- a prototype of microquasar ---
Master thesis, 1997.2, Kyoto University (Gzipped PS(in Japanese), 92page; 2.8M)
ASCA Observation of 3 bright X-ray stars near the Galactic Center
(Astrophysics by line X-ray & Gamma-ray (IV), 1997.1, at ISAS)
proceeding (Gzipped PS(in Japanese), 5page; 744K)
Y. Maeda, K. Koyama, M. Sakano, T. Takeshima, S. Yamauchi,
``A New Eclipsing Burster Near The Galactic Center'', (Proceeding of "All-Sky X-ray Observations in the Next Decade", Wako, Japan, pp.117--122 (1997))

1996

Black hole---the Great Annihilator---and the X-ray filament structure
(High energy seminar at Hayama, 1996.12, at Hayama) Proceeding (Gzipped ps (in Japanese), 6page; 201K)
M. Sakano, K. Koyama, Y. Maeda
ASCA Observations of the Great Annihilator near the Galactic Center
Proc. of 'X-ray Imaging and Spectroscopy of Cosmic Hot Plasmas', 1996.3, at Waseda Univ., Universal Academy Press, Inc., Tokyo, eds., F. Makino and K. Mitsuda (1997), pp.489--490)
(Gzipped ps (in English), 2page; 48K)

1995

Cosmic X-ray Background(CXB) -- in particular, the latest results with ASCA
(Theoretical astrophysics reserch seminor, 1995.12, at Yukawa Institute)
proceeding (Gzipped PS(in Japanese), 3page; 158K)
ASCA Large Sky Survey I -- The Approach for CXB
(Astrophysics by line X-ray & Gamma-ray (IV), 1995.12, at ISAS)
proceeding (Gzipped PS(in Japanese), 5page; 731K)
Source Finding applied to LSS(ASCA Large Sky Survey)
(Space Area reserch seminor, 1995.3, at Hakone)
proceeding ( text(in Japanese); 4K)

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Masaaki (Masa) Sakano, Dr. (E-mail: mas@star.le.ac.uk)