XTE J1650−500
| XTE J1650−500 | |
|---|---|
|
Position epoch : J2000.0 |
|
| Constellation | Era |
| Right ascension | 16 h 50 m 01 s |
| declination | −49 ° 57 ′, 7 |
| X-ray source | |
| Type | Low-mass X-ray binary star |
| Double star system | |
| distance | approx. 3 k pc approx. 10 k ly |
| Period of circulation | 0.32 days |
| Optical / stellar component | |
| Dimensions | approx. 2.7 solar masses |
| Compact component | |
| Type | Black hole |
| Dimensions | 9.7 ± 1.6 solar masses |
| Catalog names | |
| XTE J1650−500; INTREF 720 | |
XTE J1650−500 is an X-ray binary star in the southern constellation Altar that was discovered at the end of 2001 .
In a study published in 2008, the possibility was raised that XTE J1650−500 could contain the lowest mass known black hole , which with a mass of about four solar masses would have been significantly lighter than GRO 1655−40 (six solar masses). Because of this publication, it has also been dubbed "the tiniest black hole known in the universe". This assumption was withdrawn by the authors in a later publication in 2009 and the mass was estimated at just under 10 solar masses.
swell
- Nickolai Shaposhnikov & Lev Titarchuk (2009): Determination of Black Hole Masses in Galactic Black Hole Binaries Using Scaling of Spectral and Variability Characteristics ; in: The Astrophysical Journal 699 (1), pp. 453-468
- Orosz et al. (2004): Orbital Parameters for the Black Hole Binary XTE J1650−500 ; in: The Astrophysical Journal 616 (1), pp. 376-382
Individual evidence
- ↑ Gluttonous cosmic dwarf. Focus Online, April 2, 2008, 3:49 p.m.
- ↑ The little black one. On: Wissenschaft.de from April 3, 2008.
- ↑ Nickolai Shaposhnikov & Lev Titarchuk Determination of Black Hole Masses in Galactic Black Hole Binaries Using Scaling of Spectral and Variability Characteristics ; in: The Astrophysical Journal 699 (1), p. 466