X-ray emission from active galactic nuclei

Details X-ray emission from active galactic nuclei X-ray emission from active galactic nuclei

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985stin...8521088m&link_type=abstract

Presented at the X-Ray Astronomy '84 Meeting, Bologna and UV Emission from Active Galactic Nuclei Meeting, Munich, Jul. 1984

Astronomy and Astrophysics

Astronomy

Active Galactic Nuclei, Bl Lacertae Objects, Seyfert Galaxies, X Ray Spectra, Bremsstrahlung, Energy Absorption, Energy Spectra, Heao 1, Luminosity, Photoionization, Thermal Energy

Scientific paper

It is often held that the X-ray emission from active galactic nuclei (AGN) arises from a region close to the central energy source. Thus X-ray observations may provide the best constraints on the central engine. In particular, the shape of the X-ray continuum gives information about the mechanism for photon generation, X-ray time variability data can constrain the size and mass of the continuum source, and X-ray occultation data give constraints on the relative sizes of the continuum source and the intervening absorbing material (often assumed to be the broad line clouds). In addition, since a fair fraction of the total energy of an AGN is emitted at X-ray wavelengths, direct measurement of the amount and spectral form of this radiation is important for modeling of the optically emitting clouds.

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