High resolution X-ray spectroscopy of active galactic nucleiAfter a brief review of the principal problems of AGN research, selected potential high-resolution observations are discussed with a view toward assessing their scientific value and the degree of resolution they will require. Two classes of observations pertaining directly to AGNs are discussed. Fe K-alpha spectroscopy relevant to the dynamical and thermal character of the emission line zones; and measurement of resonance line absorption by highly-ionized species in BL Lac objects, which should provide information about entrainment of interstellar material by relativistic jets. A third class of potentially important observations uses AGNs as background light sources in order to directly measure the distance to clusters of galaxies.
Document ID
19910071693
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Krolik, Julian H. (Johns Hopkins University Baltimore, MD, United States)