Stuff in the works for Cas A

Cas A - The Movie
Now in MPEG!

This is the world famous movie of the 6 cm radio evolution of Cas A spanning 16 years from 1978 to 1994. It has now been converted into mpeg format. The reference for the movie is Rudnick et al., 1996, BAAS, 188.7403.

2000-2001 VLA 6 cm FITS image

Multiwavelength Study

Forward Shock Proper Motion Paper:


paper (ps) The First Measurement of Cassiopeia A's Forward Shock Expansion Rate (12 Feb 2003)
figures are embedded in the paper and listed by figure number below
ApJ vol. 589, p. 818, 2003 June 1
astro-ph/0303399
fig 1 (ps)(gif): 2002 Chandra X-ray image
fig 2 (ps)(gif): difference image between 2002 and 2000 X-ray images
fig 3 (eps)(gif): plot of expansion rate vs. azimuth for forward shock fragments
fig 4 (eps)(gif): angle averaged brightness and derived emissivity profiles for 1985 and 1994 radio maps
fig 5 (eps)(gif): dynamical simulatons of Truelove & McKee normalized to Cas A parameters
fig 6 (eps)(gif): plot of velocity vs. radius for forward shock fragments
fig 7 (ps)(gif): simulated motion vs. real motion toward the projected center of the remnant


Radio Spectral Index:


20-90 cm spectral index (gif)blue=flat, red=steep (13 nov 2001)
90-400 cm spectral index (gif) blue=flat, red=steep (13 nov 2001)


Absorption Studies:

(DeLaney, Bowden, Rudnick, Kassim, Perley)
blue=no absorption, red=lots of absorption, brightness=image listed
absorption res=18.5 arcsec, X-ray res=1 arcsec, radio res=1.5 arcsec
FOR DISCUSSION PURPOSES ONLY, PLEASE DO NOT DISTRIBUTE
image 1 (gif): absorption with whole X-ray image
image 2 (gif): absorption with central X-ray image
image 3 (gif): absorption with whole 20 cm radio image
image 4 (gif): absorption with central 20 cm radio image
image 5 (gif): grayscale absorption image (white more absorbed) with coordinate axes
image 6 (jpg): 450 micron SCUBA image from Dunne et al. 2003, Nature, 424, 285