W49B

W49B
SNR G043.3-00.2
3C 398

The nebula W49B as imaged by the Chandra X-Ray Observatory (blue) and the Palomar 200-inch (5.1 m) telescope (red, green)
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

This article is issued from Wikipedia - version of the 9/5/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.