Astronomy and Astrophysics – Astronomy
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978cosp.meetq....g&link_type=abstract
COSPAR, Plenary Meeting, 21st, Innsbruck, Austria, May 29-June 10, 1978, Paper. 22 p.
Astronomy and Astrophysics
Astronomy
Collimators, X Ray Astronomy, X Ray Sources, Binary Stars, Graphs (Charts), Light Curve, Neutron Stars, Novae, Pulse Position Modulation
Scientific paper
The main features and classifications of six transient X-ray sources that have been precisely located with the aid of the modulation collimator on HEAO 1 are discussed. The sources observed include the X-ray nova H 1705-25, the bright transient H 1743-32, two associations between bursters and flaring X-ray sources (MX 1608-52 and MXB 1659-29), the hard pulsating transient 4U 0115+63, and the fast high-latitude transient H 0449-55. Good optical counterparts are found for H 1705-25, MX 1608-52, 4U 0115+63, and H 0449-55. It is hypothesized that the low-mass binary model is applicable to H 1705-25, H 1743-32, MX 1608-52, and MXB 1659-29. 4U 0115+63 is identified with a B-star/neutron-star wide binary system, and an identification with an M-giant system is suggested for H 0449-55.
Bradt Hale
Briel Ulrich
Dower R.
Doxsey Rodger
Fabbiano Giuseppina
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