Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.3902p&link_type=abstract
American Astronomical Society Meeting 203, #39.02; Bulletin of the American Astronomical Society, Vol. 35, p.1264
Astronomy and Astrophysics
Astronomy
Scientific paper
We present an updated analysis of 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. from the ROSAT All-Sky Survey, which protrudes beyond the blast wave on the east 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 analysis has been updated to account for the spatially non-uniform contamination layer on the ACIS instrument. We will use the imaging and spectral capabilities of the Chandra/ACIS instrument to distinguish between these competing explanations.
This work was supported in part by NASA contract NAS8-03060 and NASA grant GO0-1127X.
Blair William Patrick
Edgar Richard J.
Gaetz Terrance J.
Plucinsky Paul P.
Slane Patrick O.
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