Astronomy:GRB 111209A
From HandWiki
| Duration | at least 7 hours |
|---|---|
| Right ascension | 00h 57m 22.63s |
| Declination | −46° 48′ 03.8″ |
GRB 111209A is the longest lasting gamma-ray burst (GRB) detected by the Swift Gamma-Ray Burst Mission, observed on December 9, 2011.[1] Its duration is longer than 7 hours, implying this event has a different kind of progenitor than normal long GRBs. It was first proposed that the progenitor of this event was a blue supergiant star with low metallicity. Later, it was also proposed that this event is the prototype of a new class of GRBs, ultra-long GRBs.
The GRB was associated with the magnetar-powered supernova 2011kl, an object of intermediate luminosity between conventional GRB supernovae and superluminous supernovae.[2]
See also
References
- ↑ Gendre, B.; Stratta, G.; Atteia, J. L.; Basa, S.; Boër, M.; Coward, D. M.; Cutini, S.; D'Elia, V. et al. (2013). "The Ultra-long Gamma-Ray Burst 111209A: The Collapse of a Blue Supergiant?". Astrophysical Journal 766 (1): 30. doi:10.1088/0004-637X/766/1/30. Bibcode: 2013ApJ...766...30G.
- ↑ Greiner, J. (2015). "A very luminous magnetar-powered supernova associated with an ultra-long γ-ray burst". Nature 523 (7559): 189–192. doi:10.1038/nature14579. PMID 26156372. Bibcode: 2015Natur.523..189G.
Coordinates: 
00h 57m 22.63s, −46° 48′ 03.8″
| Preceded by GRB 060218 |
Longest gamma-ray burst 2011 – |
Succeeded by current |
2011 in space | ||
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