New optical observations of 2S 0921-630 and its relation to other X-ray binaries

1981 ◽  
Vol 30 (1-4) ◽  
pp. 365-366
Author(s):  
C. Chevalier ◽  
S. A. Ilovaisky
Keyword(s):  
Optical Observations ◽  
X Ray ◽  
X Ray Binaries

scholarly journals X-Ray Determination of the Black-Hole Mass in Cygnus X-1

1998 ◽  
Vol 188 ◽  
pp. 388-389
Author(s):  
A. Kubota ◽  
K. Makishima ◽  
T. Dotani ◽  
H. Inoue ◽  
K. Mitsuda ◽  
...  
Keyword(s):  
Black Hole ◽  
Compact Object ◽  
Optical Observations ◽  
Black Hole Mass ◽  
X Ray ◽  
Upper Limit ◽  
Supergiant Star ◽  
X Ray Binaries ◽  
Two Bodies

About 10 X-ray binaries in our Galaxy and LMC/SMC are considered to contain black hole candidates (BHCs). Among these objects, Cyg X-1 was identified as the first BHC, and it has led BHCs for more than 25 years(Oda 1977, Liang and Nolan 1984). It is a binary system composed of normal blue supergiant star and the X-ray emitting compact object. The orbital kinematics derived from optical observations indicates that the compact object is heavier than ~ 4.8 M⊙ (Herrero 1995), which well exceeds the upper limit mass for a neutron star(Kalogora 1996), where we assume the system consists of only two bodies. This has been the basis for BHC of Cyg X-1.

scholarly journals Optical Observations of X-Ray Binaries

1977 ◽  
Vol 4 (1) ◽  
pp. 129-136
Author(s):  
J.B. Hutchings
Keyword(s):  
Recent Progress ◽  
Critical Assessment ◽  
Optical Observations ◽  
X Ray ◽  
The Masses ◽  
X Ray Binaries ◽  
Binary Sources

Recent progress in identifying the optical counterparts of X-ray sources has been slow, mostly because candidates are faint and X-ray data show no periodicities by which the identification can be confirmed. This report therefore deals with the investigation of some candidates to seek confirmation of their identity with the X-ray emitters, as well as details which are new or important concerning the few known binary sources. I shall also make some general remarks on the properties of the sources as they now appear, but leave a critical assessment of the masses to the next speaker.

High-mass X-ray binaries: Evolutionary population synthesis modeling

2018 ◽  
Vol 14 (S346) ◽  
pp. 455-458
Author(s):  
Zhao-yu Zuo
Keyword(s):  
High Resolution ◽  
Luminosity Function ◽  
Optical Observations ◽  
High Mass ◽  
Population Synthesis ◽  
X Ray ◽  
Star Forming ◽  
Common Envelope ◽  
X Ray Binaries

AbstractUsing an evolutionary population synthesis code, we modeled the universal, featureless X-ray luminosity function of high-mass X-ray binaries (HMXBs) in star-forming galaxies. We put constraints on the natal kicks, super-Eddington accretion factor, as well as common envelope prescriptions usually adopted (i.e., the αCE formalism and the γ algorithm), and presented the detailed properties of HMXBs under different models, which may be investigated further by future high-resolution X-ray and optical observations.

scholarly journals Simulating the X-ray evolution of late-type galaxies with population synthesis

2012 ◽  
Vol 8 (S290) ◽  
pp. 375-376
Author(s):  
Zhao-yu Zuo ◽  
Xiang-dong Li
Keyword(s):  
High Resolution ◽  
Physical Properties ◽  
Stellar Mass ◽  
Optical Observations ◽  
Population Synthesis ◽  
Late Type ◽  
X Ray ◽  
Global Emission ◽  
X Ray Binaries ◽  
Cosmic History

AbstractUsing an evolutionary population synthesis code, we modeled the global emission of X-ray binaries in late-type galaxies, its relations with other physical properties (i.e., optical luminosity, stellar mass, etc.) of the galaxies, and their evolution with redshift over the cosmic history, which may be investigated further by future high-resolution X-ray and optical observations.

scholarly journals Optical properties of High-Mass X-ray Binaries (HMXBs) in the Small Magellanic Cloud

2008 ◽  
Vol 4 (S256) ◽  
pp. 367-372
Author(s):  
M. J. Coe ◽  
R. H. D. Corbet ◽  
K. E. McGowan ◽  
V. A. McBride ◽  
M. P. E. Schurch ◽  
...  
Keyword(s):  
Milky Way ◽  
Optical Observations ◽  
High Mass ◽  
Optical Data ◽  
X Ray ◽  
Tidal Interactions ◽  
Exciting Opportunity ◽  
Be Star ◽  
Direct Results ◽  
X Ray Binaries

AbstractThe SMC represents an exciting opportunity to observe the direct results of tidal interactions on star birth. One of the best indicators of recent star birth activity is the presence of significant numbers of High-Mass X-ray Binaries (HMXBs) — and the SMC has them in abundance! We present results from nearly 10 years of monitoring these systems plus a wealth of other ground-based optical data. Together they permit us to build a picture of a galaxy with a mass of only a few percent of the Milky Way but with a more extensive HMXB population. However, as often happens, new discoveries lead to some challenging puzzles — where are the other X-ray binaries (e.g., black hole systems) in the SMC? And why do virtually all the SMC HMXBs have Be star companions? The evidence arising from these extensive optical observations for this apparently unusual stellar evolution are discussed.

Binary X-ray sources in the LMC

1991 ◽  
Vol 148 ◽  
pp. 285-290 ◽  
Author(s):  
J. B. Hutchings ◽  
A. P. Cowley
Keyword(s):  
Black Hole ◽  
Point Source ◽  
Optical Observations ◽  
High Mass ◽  
X Ray ◽  
Long Period ◽  
Low Mass ◽  
Black Hole Binary ◽  
X Ray Binaries

We report new results on the X-ray binaries in the LMC since IAU Symposium 108 (see review by Hutchings 1984). These include an update of the point source identifications after further optical observations and a reprocessing of the Einstein database. We report major new results on several specific systems. Among low-mass systems (LMXB), we report periods and orbital determinations for LMC X-2 (long period), CAL 83, and CAL 87 (eclipsing black-hole binary). For the high-mass X-ray binaries (MXRB), we announce an ˜ 99 day (precession?) period in LMC X-3 and discuss orbital determinations for LMC X-1 and 0538–66.

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