Chandra Observations of the Eastern Limb of the Vela Supernova Remnant

Simple item page
dc.creatorPlucinsky, P. P.
dc.creatorSmith, R. K
dc.creatorEdgar, R. J.
dc.creatorGaetz, T. J.
dc.creatorSlane, P. O.
dc.creatorBlair, W. P.
dc.creatorTownsley, L. K.
dc.creatorBroos, P. S.
dc.date2001-12-12
dc.date.accessioned2026-07-07T02:01:51Z
dc.date.available2026-07-07T02:01:51Z
dc.descriptionWe 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.
dc.description4 pages, 4 figures, newpasp style file, To appear in "Neutron Stars in Supernova Remnants" (ASP Conference Proceedings), eds P. O. Slane and B. M.Gaensler
dc.identifierhttps://arxiv.org/abs/astro-ph/0112287
dc.identifierhttp://arxiv.org/abs/astro-ph/0112287
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3901
dc.subjectAstrophysics
dc.titleChandra Observations of the Eastern Limb of the Vela Supernova Remnant
dc.typetext

Files

Collections

arXiv