(776 pages 187 illustrations, 19 illustrations in color.)
SERIES
Series Title
Astrophysics and space science library, 187.
CONTENTS NOTE
Text of Note
Editorial. Part 1: I. Achievements of the Present Generation of Space Observatories. II. Achievements of the Present Generation of Ground--Based Telescopes. III. Stars. IV. Interstellar Medium and Galaxies. V. Cosmology. VI. Observations at Many Wavelengths: Panel Discussion on Coordination of Observations at Many Wavelengths. VII. The New Generation of Large Ground--Based Telescopes. VIII. The New Generation Space Telescopes. IX. New Technologies for Astronomy. X. Summary, Priorities and Objectives for the 21st Century. Part 2: XI. Stars. XII. Interstellar Medium and Galaxies. XIII. New Technologies for Astronomy. Index.
SUMMARY OR ABSTRACT
Text of Note
Introduction The extragalactic X-ray background (XRB), discovered about 30 years ago, has been studied extensively with many X-ray experiments, in particular with the satel- lites HEAO I and II (see ego Boldt 1987) and with ROSAT (e.