- RX J0852.0-4622
Supernova
name = RX J0852.0-4622 or Vela Junior
caption =
epoch =J2000.0
type = SN
SNRtype = ?
host =
constellation =Vela
ra =08h 52m
dec = -46° 22'
gal = 286.9460 +42.4568 (34" W, 10" S)
discovery =
iauc =
mag_v = ?
distance = 700Ly
notes = Could be associated withPSR J0855-4644 .
central object in SNR RX J0852.0-4622 =AX J0851.9-4617 .RX J0852.0-4622 (also known as G266.2−1.2) is a recently discovered
supernova remnant . The distance to this object is controversial, but some scientists argue that the supernova remnant is only 650-700 light years away, and exploded comparatively recently, only about 1400 years ago. The remnant is located in the southern sky in the constellation Vela ("sail"), and sits (in projection) inside the much larger and olderVela Supernova Remnant . For this reason, RX J0852.0-4622 is often referred to as Vela Junior.X-ray astronomers and gamma-ray astronomers of the Max Planck Institute for Extraterrestrial Physics in Garching, Germany, discovered this supernova remnant in 1998 (Nature, Vol. 396, 12 November 1998).
If the remnant is indeed young and nearby, its corresponding
supernova should have been visible from the Earth in about the year 1250. One difficulty with this interpretation is that there are no contemporary written reports of any supernova at that time or in that part of the sky.References
* Discovery reference: "Nature, Vol. 396", 12 November 1998
* http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/981112c.html
* http://adsabs.harvard.edu/abs/2004astro.ph.10372I
* [http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=RX+J0852.0-4622&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id Simbad]
Wikimedia Foundation. 2010.