Comptonization of the Lyman edge in active galactic nuclei

Details Comptonization of the Lyman edge in active galactic nuclei Comptonization of the Lyman edge in active galactic nuclei

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.249..634c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 249, April 15, 1991, p. 634-639.

Astronomy and Astrophysics

Astronomy

33

Active Galactic Nuclei, Compton Effect, Interstellar Gas, Lyman Spectra, Relativistic Particles, Astronomical Spectroscopy, Cold Gas, Galactic Radiation

Scientific paper

Recent X-ray observations indicate the presence of both relativistic particles and cold gas very close to the center of active galactic nuclei. However, the UV radiation from this cold gas does not exhibit the Lyman edge predicted by many accretion disk models. Here, it is shown that Comptonization of the intrinsic spectrum by gas in the form of a hot corona at the intermediate temperatures (T about 10 to the 8th K) can efficiently smear out the Lyman edge without destroying the observed iron K-fluorescent line.

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