Extended x-ray observations of Scorpius X-1 with a Bragg crystal spectrometer

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

DOI:https://doi.org/10.1086/156607· OSTI ID:6136760

Long, K S; Kestenbaum, H L

Observations covering multiple orbital periods of the x-ray source Sco x-1 were carried out in 1975 and 1976 with the graphite crystal spectrometer aboard OSO 8. Time-averaged continuum spectra are featureless and are reasonably well described in terms of a Comptonized thermal bremsstrahlung spectrum in which kT approx. 1.5 to 2 keV and in which the number of electron scatterings that each photon is assumed to have undergone is of order 100. Line limits, typically with equivalent widths of a few electron volts, are established for important emission lines of Si/sub XIII, SI/sub XIV/, S/sub XV/, S/sub XVI/, and Fe/sub XXV/, as a function of binary phase. 4 figures, 2 tables.

• Research Organization: Columbia Univ., New York, NY
• OSTI ID: 6136760
• 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
BREMSSTRAHLUNG
CHARGED PARTICLES
COMPTON EFFECT
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY RANGE
INTERACTIONS
IONS
IRON IONS
KEV RANGE
KEV RANGE 01-10
ORBITING SOLAR OBSERVATORIES
RADIATIONS
REFLECTION
SATELLITES
SCATTERING
SILICON IONS
SPECTRA
SULFUR IONS
X-RAY SPECTRA