I thank all my supervisors, colleagues (domestic and international), graduate students and post-doc fellows. I am deeply indebted to you for the honor.

I thank all my supervisors , colleagues (domestic and international), graduate students and post-doc fellows .I am deeply indebted to you for the honor of “purple ribbon medal”.These in mind, I will review my collaborativework with you.

My Research Career 　（ Pre-history ： Graduate School)

Nuclear PhysicsKoyama

Sato

TomonagaYukawa

Research Fellow of JSPS（ Institute For Nuclear Science)

YokomizoVice Director of JAERI

YamadaA 　 21 COE Leader ofRitsumeikan University

“Training course” of

ExperimentalPhysics

　　　 X-Ray Research 　 (History) ISAS （ 1975) Nagoya(1988) Kyoto(1991) 　　 Success of 4 Satellites and Failure of 2

The ISAS Rocket M3C （ Feb. 1976 ）　 failed to launch CORSA, to be the first astronomical satellite o ｆ Japan, due to a miss–operation of attitude control of the 2-nd, 3-rd stage motors.

This accident was rooted deep in human factors.Why did we not decide to stop the launch operation despite of a signature of attitude error. I learned that the space program requires tough heart, swift decision, carefulness and etc.

The failure of CORSA gave me time to developGas Scintillation Proportional Counter (GSPC)

Our Rocket Flight (K10-13; Sep. 1977) discovered OVII lines from The Local Hot bubble.

Oriented me to the study of “the X Ray Spectroscopy or “Iron Line Astronomy”.

Inoue

Koyama

MaeMamiya

Hakucho (1979)the first astronomical satellite o ｆJapan

M. Oda

K. Koyama

A. Sono

M. Matsuoka

Y. Ogawara

Hakucho Symposium after The 16-th Cosmic Ray Conference

Hayakawa Lewin Ogawara Truemper MacCammon Giacconi Nishimura Matsuoka Nagase Tanaka Makino Hoshi Yamashita Miyamoto Seward Oda

The Asahi Prize and the “Hakucho Widows”

Tanaka

Tawara

Inoue

Sugimoto

Koyama

Makishima

Matsuoka

Oda

Makishima

Koyama

GSFC/NASA

● 　 Multi-Wire Proportional Counter (P.Serlemitsos Ginga)

● 　 Spectral Study of X-ray binaries (J. Swank 　 Tenma )

● 　 Met many friends with whom I have collaborated here after

S. Holt N. White R. Mushotzky

1983

HoltSunyaev

Mushotzky

Keep Continuous ActivityＱｕｉｃｋ　ｉｓ　ｂｅａｕｔｉｆｕｌ！ (Freeman　 Ｄｙｓｏｎ )Frequent　is　essential　　　　　　　　　　　　(Frank　McDonald)International　Colaboration

Swank

Koyama

Ogawara

Martin Turner ：

Koyama

Mitsuda Turner

In this year, we will launch ＡＳＴＲＯ - Ｅ２ .

ASCA

Ri ｃ ker

Doty

SerlemitsosKinieda

Next year is 2006, the millennium of 　 SN1006. To discuss on the results from Astro E2, I would like to have an International Symposium in Kyoto, because Fujiwara Teika, an ancestor of our Emperor, wrote very valuable note on the Supernova Event in 1006.

Supernova Events noted by Fujiwara Teika (1161-1241) in his diary “Meigetsuki”

3C58(1181) Crab (1054) SN1006