Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aipc..211...99g&link_type=abstract
IN: High-energy astrophysics in the 21st century; Proceedings of the Workshop, Taos, NM, Dec. 11-14, 1989 (A91-47977 20-90). New
Astronomy and Astrophysics
Astronomy
Background Radiation, X Ray Astronomy, Active Galaxies, Star Formation
Scientific paper
The use of X-ray astronomy is discussed in terms of the observation of significant objects at fluxes that constitute the X-ray background. The development of facilities that can provide the required level of sensitivity is discussed with attention given to deficiencies in present programs. Among the topics mentioned are the X-ray background (XRB) and AGN population, the contribution of star-forming galaxies to XRB, and the significance of blue emission from field galaxies. The sensitivity required for the study of star-forming galaxies at moderate redshift and other such objects is found to be two to three orders of magnitude deeper than that of the AXAF. Specifically, the sensitivity should reach 10 to the -19th ergs/sq cm/s, and instruments for the study described should provide arcsecond angular resolution and large instrumental arrays.
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