Continuum of QSOs and the nature of the broad 3600 A emission feature

Journal Article · Tue Jun 15 04:00:00 EDT 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/160006· OSTI ID:6650852

Puetter, R C; Burbidge, E M; Smith, H E; Stein, W A

Models to explain the shape of the 3600 A blue emission feature in QSO spectra are derived that depend only on a nonthermal, featureless power-law and Balmer continuum from emission-line clouds. These models require a rather flat power-law component with F(v)proportionalv/sup -0.5/ to explain data observed on 3C 273 at visual and ultraviolet wavelengths. The required synchrotron--self-Compton radiation is consistent with X-ray and ..gamma..-ray emission. The models are an alternative to those requiring an entirely new component of visual and ultraviolet emission from a thermal accretion region.

• Research Organization: Center for Astrophysics and Space Science, University of California, San Diego
• OSTI ID: 6650852
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 257:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BALMER LINES
BASIC INTERACTIONS
BREMSSTRAHLUNG
COMPTON EFFECT
COSMIC RADIO SOURCES
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
INTERACTIONS
QUASARS
RADIATION FLUX
RADIATIONS
SCATTERING
SPECTRA
SYNCHROTRON RADIATION
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA