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Title:
GINGA observations of the X-ray eclipse of SS 433
Authors:
Kawai, Nobuyuki; Matsuoka, Masaru; Pan, Hong-Chao; Stewart, Gordon C.
Affiliation:
AA(Institute of Physical and Chemical Research, Wako, Japan), AB(Institute of Physical and Chemical Research, Wako, Japan), AC(Leicester, University, England), AD(Leicester, University, England)
Publication:
Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 41, no. 3, 1989, p. 491-507. (PASJ Homepage)
Publication Date:
00/1989
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
COMPANION STARS, ECLIPSING BINARY STARS, GINGA SATELLITE, SATELLITE OBSERVATION, X RAY BINARIES, X RAY SPECTRA, ASTRONOMICAL SATELLITES, JAPANESE SPACE PROGRAM, LIGHT CURVE, X RAY ASTRONOMY
Bibliographic Code:
1989PASJ...41..491K

Abstract

SS 433 was observed by Ginga for five days, and a drop in X-ray intensity centered at the phase of the optical primary minimum was detected. It is concluded that this episode was most likely an eclipse of the X-ray emitting region near the compact object by the companion star. A geometrical analysis of the binary system indicates that the X-ray source is either a fat blue-shifted jet originating from a compact object with a mass larger than 8 solar masses or, alternatively, a thin two-sided jet originating from a compact object with a mass less than 4 solar masses.

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