Chandra Observations of the Eastern Limb of the Vela Supernova Remnant

Details Chandra Observations of the Eastern Limb of the Vela Supernova Remnant Chandra Observations of the Eastern Limb of the Vela Supernova Remnant

2001-12-12

arxiv.org/abs/astro-ph/0112287v1

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, newpasp style file, To appear in "Neutron Stars in Supernova Remnants" (ASP Conference Proceedings), eds P

Scientific paper

We present results from two Chandra/ACIS observations of the so-called Vela ``Bullet D'' region on the eastern limb of the Vela supernova remnant. The Bullet D region is a bright X-ray feature, identified by Aschenbach et al. (1995) from the ROSAT All-Sky Survey, which protrudes beyond the blast wave on the eastern side of the remnant. It has been suggested that this feature is a fragment of supernova ejecta which is just now pushing beyond the position of the main blast wave. An alternate explanation is that the feature is a ``break-out'' of the shock in which inhomogeneities in the ambient medium cause the shock to be non-spherical. The Chandra image shows a fragmented, filamentary morphology within this region. The Chandra spectra show strong emission lines of O, Ne, and Mg. Equilibrium ionization models indicate that the O and Ne abundances are significantly enhanced compared to solar values. However, non-equilibrium ionization models can fit the data with solar O abundances and Ne abundances enhanced by only a factor of two. The Chandra data are more consistent with the shock breakout hypothesis, although they cannot exclude the fragment of ejecta hypothesis.

Affiliated with

Also associated with

No associations

Rating

Chandra Observations of the Eastern Limb of the Vela Supernova Remnant does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Chandra Observations of the Eastern Limb of the Vela Supernova Remnant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chandra Observations of the Eastern Limb of the Vela Supernova Remnant will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-82133