XTE_J1650-500

XTE J1650−500

XTE J1650−500

X-ray binary star in the constellation Ara

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.

Quick Facts Constellation, Right ascension ...
The location of XTE J1650−500 (circled in red)

The binary period of the black hole and its companion is 0.32 days.[5]

See also

References

  1. [1]
    "XTE J1650-500". SIMBAD. Centre de données astronomiques de Strasbourg.
  2. [2]
    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
  3. [3]
    Smallest, lightest black hole identified Technology & science - Space - Space.com By Andrea Thompson, updated 4/1/2008 4:32:08 PM ET
  4. [4]
    Andrea Thompson (1 April 2008). "Smallest Black Hole Found". Space.com.
  5. [5]
    Orosz, J.A. et al. (2004) ApJ 616,376-382.
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