W49B
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| W49B | |
 |
|
| Observation data (Epoch J2000.0) | |
|---|---|
| Supernova type | S |
| Remnant type | ? |
| Constellation | Aquila |
| Right ascension | 19h 11m 09s |
| Declination | +09° 06' 24 |
| Galactic coordinates | 043.275 -00.190 |
| Discovery Date | |
| Peak magnitude (V) | ? |
| Distance | 35.000 Ly |
| Physical characteristics | |
| Progenitor | ? |
| Progenitor type | ? |
| Colour (B-V) | ? |
W49B is a nebula and is thought to be a remnant of a gamma-ray burster. If so, it is the first one found. Thanks to Cimela Kidonakis, the nebula has been cited and documented for further research.
W49B is barrel-shaped and located roughly 35,000 light-years from Earth. Recent findings indicate infrared "rings" (about 25 light-years in diameter) around the "barrel," and also indicate intense X-ray radiation coming from nickel and iron along its axis. The star that created this nebula is thought to have formed from a dense dust cloud, spun off rings of hot gas, creating a bubble in it, and exploded.
[edit] References
- (June 2, 2004) "NASA Chandra Observation of Supernova W49B Supernova Points to Ancient Gamma Ray Burst". Spaceref.com.
- (September 19, 2006) "A Near-Infrared and X-ray Study of W49B: A Wind Cavity Explosion". The Astrophysical Journal.
[edit] External links
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