Structure of the interstellar medium around Cas A

Details Structure of the interstellar medium around Cas A Structure of the interstellar medium around Cas A

2008-01-21

arxiv.org/abs/0801.3267v1

Astronomy and Astrophysics

Astrophysics

29 pages including 10 figures; accepted by The Astrophysical Journal

Scientific paper

10.1086/533426

We present a three-year series of observations at 24 microns with the Spitzer Space Telescope of the interstellar material in a 200 x 200 arcmin square area centered on Cassiopeia A. Interstellar dust heated by the outward light pulse from the supernova explosion emits in the form of compact, moving features. Their sequential outward movements allow us to study the complicated three-dimensional structure of the interstellar medium (ISM) behind and near Cassiopeia A. The ISM consists of sheets and filaments, with many structures on a scale of a parsec or less. The spatial power spectrum of the ISM appears to be similar to that of fractals with a spectral index of 3.5. The filling factor for the small structures above the spatial wavenumber k ~ 0.5 cycles/pc is only ~ 0.4%.

Affiliated with

Also associated with

No associations

Rating

Structure of the interstellar medium around Cas A 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 Structure of the interstellar medium around Cas A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structure of the interstellar medium around Cas A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-94599