X-ray spectra of A0620-00 obtained with a Bragg crystal spectrometer

Journal Article · Wed Nov 15 04:00:00 EST 1978 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/156606· OSTI ID:6310880

Long, K S; Kestenbaum, H L

The OSO 8 graphite crystal spectrometer was used to obtain observations, in 1975 October and 1976 January, of the transient x-ray source A0620-00, which yield upper limits less than or approx. = to 10 eV to the equivalent widths of narrow emission lines of Si/sub XIII/, Si/sub XIV/, S/sub XV/, and S/sub XVI/. Photoionization is unlikely to alter the principal conclusion that the electron scattering in the source is substantial. High-resolution spectra obtained in 1975 October reveal a featureless continuum which is better characterized as blackbody (kT approx. 0.5 keV) than as thin bremsstrahlung emission. 2 figures, 2 tables.

• Research Organization: Columbia Univ., New York, NY
• OSTI ID: 6310880
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 226:1; 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
ATOMIC IONS
BASIC INTERACTIONS
BRAGG REFLECTION
CHARGED PARTICLES
COMPTON EFFECT
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
INTERACTIONS
IONS
LINE WIDTHS
NOVAE
ORBITING SOLAR OBSERVATORIES
REFLECTION
SATELLITES
SCATTERING
SILICON IONS
SPECTRA
STARS
SULFUR IONS
TRANSIENTS
VARIABLE STARS
X-RAY SPECTRA