GRB 050709
| Event type | Gamma-ray burst  |
|---|---|
| Constellation | Grus |
| Right ascension | 23h 01m 32.1s |
| Declination | −38° 59′ 27″ |
| Total energy output | 6 × 1049 erg[1] |
| Other designations | GRB 050709 |
GRB 050709 was a
).Observations
GRB 050709 was detected by multiple instruments on board
A radio source was detected on July 11 at a position of R.A.=23h 01m 32.1s, Decl.=−38° 59′ 27″.[3] Optical observations taken 34 hours after the burst revealed an optical afterglow. This was the first discovery of transient optical emission from a short burst.[4]
Ejecta
Analysis of the burst's afterglows suggested two models to explain the burst's afterglow. In the first, the burst's
Host galaxy
GRB 050709's x-ray afterglow associated the burst with a host galaxy at a redshift of z = 0.16. This galaxy's light curve excluded the possibility of a supernova association, a common feature of long bursts. This suggested that short-duration bursts release much less energy than long-duration bursts.
Notes
References
- Cameron, P. B.; Frail, D. A. (2005). "GRB050709: Radio Observations". GCN Circulars. 3578: 1. Bibcode:2005GCN..3578....1C.
- Graziani, Carlo; et al. (2005). "GRB050709: A Possible Short-Hard GRB Localized by HETE". GCN Circulars. 3570: 1. Bibcode:2005GCN..3570....1B.
- Hjorth, Jens; et al. (2005). "The optical afterglow of the short big gamma-ray burst GRB 050709". Nature. 437 (7060): 859–861. PMID 16208365.
- Panaitescu, A. (2006). "The energetics and environment of the short-GRB afterglows 050709 and 050724". .
- Price, P. A.; et al. (2005). "GRB 050709: Spectroscopy". GCN Circulars. 3605: 1. Bibcode:2005GCN..3605....1P.