XTE J1650−500 is a binary system containing a stellar-mass black hole candidate and 2000–2001 transient binary X-ray source located in the constellation Ara. In 2008, it was claimed that this black hole had a mass of 3.8±0.5 solar masses,[3] which would have been the smallest found for any black hole; smaller than GRO 1655−40, the then known smallest of 6.3 M☉.[4] However, this claim was subsequently retracted;[2] the more likely mass is 5–10 solar masses.
 Artist's impression of XTE J1650−500 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 16h 50m 00.98s[1] |
| Declination | −49° 57′ 43.6″[1] |
| Characteristics | |
| Spectral type | K2V[1] |
| Astrometry | |
| Distance | 3300±700[2] pc |
| Details | |
| Black hole | |
| Mass | 9.7±1.6[2] M☉ |
| Other designations | |
INTREF 720 | |
| Database references | |
| SIMBAD | data |
The binary period of the black hole and its companion is 0.32 days.[5]
See also
editReferences
edit- ^ a b c "XTE J1650-500". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ a b c Determination of Black Hole Masses in Galactic Black Hole Binaries Using Scaling of Spectral and Variability Characteristics Shaposhnikov, Nickolai; Titarchuk, Lev; The Astrophysical Journal, Volume 699, Issue 1, pp. 453-468 (2009) doi:10.1088/0004-637X/699/1/453 Pdf
- ^ Smallest, lightest black hole identified Technology & science - Space - Space.com By Andrea Thompson, updated 4/1/2008 4:32:08 PM ET
- ^ Andrea Thompson (1 April 2008). "Smallest Black Hole Found". Space.com.
- ^ Orosz, J.A. et al. (2004) ApJ 616,376-382.
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