Astronomy:Bursting Pulsar
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Short description: Star in the constellation Sagittarius
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 17h 44m 33.1s[1] |
| Declination | −28° 44′ 29″[1] |
| Details | |
| Rotation | 2.141 second−1 |
| Other designations | |
2EG J1746-2852, 3EG J1746-2851, INTREF 820, AX J1744.5-2844 | |
| Database references | |
| SIMBAD | data |
The Bursting Pulsar (GRO J1744-28) is a low-mass x-ray binary with a period of 11.8 days. It was discovered in December 1995 by the Burst and Transient Source Experiment on the Compton Gamma-Ray Observatory, the second of the NASA Great Observatories. The pulsar is unique in that it has a "bursting phase" where it emits gamma rays and X-rays peaking at approximately 20 bursts per hour after which the frequency of bursts drops off and the pulsar enters a quiescent phase. After a few months, the bursts reappear, though not yet with predictable regularity.[2]
The Bursting Pulsar is the only known X-ray pulsar that is also a Type II X-ray burster.[1]
References
- ↑ 1.0 1.1 1.2 Daigne, F.; Goldoni, P.; Ferrando, P.; Goldwurm, A.; Decourchelle, A.; Warwick, R. S. (2002). "XMM-Newton observation of the bursting pulsar GRO J1744-28 in quiescence". Astronomy & Astrophysics 386 (2): 531–534. doi:10.1051/0004-6361:20020223. Bibcode: 2002A&A...386..531D.
- ↑ "The Bursting Pulsar". http://imagine.gsfc.nasa.gov/docs/features/news/10jun96.html.
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