A test of models for the photoionizing continua of quasi-stellar objects

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185672· OSTI ID:7135410

Stein, W A ^[1]

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1. Minnesota Univ., Minneapolis (USA)

An observational test of models for the spectral distribution of the photoionizing continua of QSOs is proposed. It is suggested that the shape of the calculated spectrum may be compared with observations to test models for the visual, UV, and X-ray emission of QSOs. Several models derived from various studies are reviewed. It is proposed that, if the photoionizing continua extend from a wavelength of about 1 micron to low-energy X-rays, broken power laws will fit the data better than thermal accretion disks. 29 refs.

• OSTI ID: 7135410
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 351; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCRETION DISKS
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
EMISSION SPECTRA
ENERGY SPECTRA
IONIZATION
MATHEMATICAL MODELS
PHOTOIONIZATION
QUASARS
SPECTRA
SPECTROSCOPY
TESTING
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY SPECTRA