PSR B1259-63
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Crux |
| Right ascension | 13h 02m 47.65s[1] |
| Declination | –63° 50′ 08.7″[1] |
| Astrometry | |
| Proper motion (μ) | RA: -2.90[1] mas/yr Dec.: -6.40[1] mas/yr |
| Absolute magnitude (MV) | 10.68[citation needed] |
| Distance | Approx. 7500 ly.[2] |
| Orbit[3] | |
| Companion | SS 2883 |
| Period (P) | 1237 days yr |
| Semi-major axis (a) | 70 AU[citation needed]" |
| Eccentricity (e) | 0.87 |
| Inclination (i) | 36° |
| Other designations | |
| Database references | |
| SIMBAD | data |
PSR B1259-63 is a pulsar and member of an eclipsing binary star system with the blue B2e-class star SS 2883. The pair has an eccentric orbit that is inclined to the line of sight from Earth by about 36°, leading to a 40 day eclipse each time the pulsar passes behind the star.[3] The pulsar has a period of about 48 ms and a luminosity of 8.3 × 1035 erg/s. It emits very high energy gamma rays that vary on a time scale of several days.[4]
The star SS 2883 has about 10 solar masses and is 6 solar radii in size. The rate of rotation is about 280 km/s at the equator, or 70% of the breakup velocity.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "TYC 8997-1597-1 -- Pulsar". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-01-06.
- ↑ ScienceDaily Discovery of Structure of Radio Source from a Pulsar Orbiting a Massive Star
- ↑ 3.0 3.1 3.2 Wang N.; Johnston S.; Manchester R. N. (June 2004). "13 years of timing of PSR B1259-63". Monthly Notices of the Royal Astronomical Society 351 (2): 599–606. arXiv:astro-ph/0403612. Bibcode:2004MNRAS.351..599W. doi:10.1111/j.1365-2966.2004.07806.x.
- ↑ Aharonian, F. et al. (2005). "Discovery of the Binary Pulsar PSR B1259-63 in Very-High-Energy Gamma Rays around Periastron with H.E.S.S.". Astronomy & Astrophysics 442: 1–10. arXiv:astro-ph/0506280. Bibcode:2005A&A...442....1A. doi:10.1051/0004-6361:20052983.
External links
- http://jumk.de/astronomie/special-stars/psr-b-1259-63.shtml
- http://tevcat.uchicago.edu/?mode=1;id=93
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