LS 5039
| Data from LS 5039 X-ray binary star |
|
|---|---|
| Constellation | sign |
|
Position Epoch : J2000.0 Equinox : J2000.0 |
|
| Right ascension | 18 h 26 m 15 s |
| declination | −14 ° 50 ′ 54 ″ |
| Double star system | |
| Type | Massive X-ray binary star, microquasar |
| distance | approx. 2.5 k pc (approx. 8.2 k ly ) |
| Period of circulation | 3.906 d |
| eccentricity | 0.35 ± 0.04 |
| Optical / stellar component | |
| Apparent brightness (V-band) | 11.2 mag |
| Spectral class | O6.5 V |
| radius | approx. 9 R ☉ |
| Dimensions | approx. 23 M ☉ |
| Catalog names | |
| LS 5039, RX J1826.2-1450, HESS J1826-148, V479 Scuti, TYC 5702-1197-1 | |
LS 5039 , also known under the variable name V479 Scuti (short: V479 Sct ), is a massive X-ray binary star and microquasar in the constellation of Shield .
The system consists of a compact object and a blue giant of the spectral class O, which orbit each other in a close orbit in just under 4 days. The exact nature of the compact object in LS 5039 is still the subject of research; it could be a black hole or a neutron star.
The system is a source of X-rays and gamma rays with energies up to the TeV range.
Individual evidence
- ↑ a b c d e Casares et al .: "A possible black hole in the γ-ray microquasar LS 5039"; in: Monthly Notices of the Royal Astronomical Society, Vol. 364, Issue 3, pp. 899ff. bibcode : 2005MNRAS.364..899C
- ↑ Clark et al .: "On the radio emitting high mass X-ray binary LS 5039"; in: Astronomy and Astrophysics, Vol. 376, p. 476ff. bibcode : 2001A & A ... 376..476C