W49B
| W49B SNR G043.3-00.2 3C 398 |
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The nebula W49B as imaged by the Chandra X-Ray Observatory (blue) and the Palomar 200-inch (5.1 m) telescope (red, green)
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| 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 |
| Peak magnitude (V) | ? |
| Distance | 26,000 ly |
W49B (also known as SNR G043.3-00.2 or 3C 398) is a nebula resulting from a type Ib or Ic supernova.[1] If the supernova was visible from Earth it would have been seen around 1000 AD (the remnant "is about a thousand years old") which may have produced a gamma-ray burst[2] and may have produced a black hole.[3]
W49B is barrel-shaped and located roughly 26,000 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 before throwing off hot, gaseous rings, creating a bubble, and exploding.
See also
References
- ↑ "The Galactic Supernova Remnant W49B Likely Originates from a Jet-driven, Core-collapse Explosion" by Laura A. Lopez et al. 2013 Astrophysical Journal 764 50
- ↑ W49B: Did An Explosion Create Our Galaxy's Youngest Black Hole? February 13th 2013
- ↑ "Baby black hole is swaddled in a supernova remnant" by Flora Graham, New Scientist on line, Feb. 15, 2013
External links
- (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". doi:10.1086/509311
- The Astrophysical Journal. ISSN 0004-637X & ISSN 0067-0049
- SIMBAD: SNR G043.3-00.2 -- SuperNova Remnant 2013.02.15 CET 18:00:16
- Image W49B Aladin previewer
- The Galactic Supernova Remnant W49B Likely Originates from a Jet-driven, Core-collapse Explosion - Abstract - The Astrophysical Journal - IOPscience, Issue 1 (2013 February 10) doi:10.1088/0004-637X/764/1/50
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