Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.1302k&link_type=abstract
American Astronomical Society, AAS Meeting #212, #13.02; Bulletin of the American Astronomical Society, Vol. 40, p.206
Other
Scientific paper
We present X-ray images from Chandra and ROSAT along with narrow-band optical images of the mixed-morphology supernova remnant W28. We spatially compare these data with VLA maps that have been previously published in the literature. While the radio observations clearly reveal a non-thermal shell, the ROSAT and Chandra observations confirm that the X-ray emission is centrally concentrated and primarily thermal in origin; the contrasting X-ray and radio morphologies are characteristic of mixed-morphology SNRs. Narrow-band optical images from the Curtis Schmidt telescope at Cerro Tololo International Observatory reveal complex filamentary structure. There is a relative enhancement of [S II] compared to H-alpha in the regions of known shock/cloud interactions and the converse is true in the central X-ray emitting region. Our Chandra image details the shape and extent of the central emission, revealing a bright knotty region approximately 5-10 arcmin in size. Spatially resolved spectroscopy shows that the diffuse X-ray emission has uniform temperature in the regions covered by our Chandra observations, as it typical of other mixed-morphology SNRs. The Chandra data also reveal a hard X-ray point source coincident with the southwestern shell. This hard source is most likely unrelated to W28: we argue that confusing emission from this source may be responsible for spectral variations reported previously for W28 based on prior X-ray observations.
Borkowski Kazimierz J.
Keohane Jonathan W.
Pannuti Thomas G.
Rho Jeonghee
Winkler Frank P.
No associations
LandOfFree
A Multiwavelength Study Of The Mixed-Morphology Supernova Remnant W28 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 A Multiwavelength Study Of The Mixed-Morphology Supernova Remnant W28, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Multiwavelength Study Of The Mixed-Morphology Supernova Remnant W28 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1395233