Hot Universe: Proceedings of the 188th Symposium of the International Astronomical Union, Held in Kyoto, Japan, August 26-30, 1997

The present decade opens new frontiers in high energy astrophysics. After the Einstein, Temma, EXOSAT and Ginga X-ray satellites of the 1980s, several satellites are simultaneously in orbit, offering spectacular advances in X-ray imaging at low energies (ROSAT; Yohkoh), as well as at high energies (GRANAT), in spectroscopy with increased bandwidth (ASCA; SAX), and in timing (XTE). While these satellites allow us to study atomic radiation from hot plasmas or energetic electrons, other satellites study nuclear radiation at gamma-ray energies (CGRO), associated with radioactivity or spallation reactions. All these experiments show that the whole universe, from the sun to clusters of galaxies, is emitting X- and gamma rays. This symposium is dedicated to highlighting high energy phenomena, in particular those seen in X- and gamma rays, and is intended to bring together the most recent results, and to discuss and deepen our insight into high energy astrophysics.Koyama, Katsuji is the author of 'Hot Universe: Proceedings of the 188th Symposium of the International Astronomical Union, Held in Kyoto, Japan, August 26-30, 1997' with ISBN 9780792350590 and ISBN 0792350596.