3C 396 provides a morphological middle ground between young remnants whose morphology is obviously shaped by density variations in the circumstellar material, such as 3C 397 and remnants expanding into a relatively empty or smoothly varying regions such as 3C 391 or SN 1006 AD. The small scale "arcs" superimposed upon nearly perfect spherical morphology of 3C 396 can be seen in new high resolution VLA images at 20 and 6 cm. We discuss polarization and its spatial distribution across the remnant. We will examine archival X-ray observations and address the correlations between radio and X-ray images in terms of the dynamical evolution of the remnant and its interaction with the circumstellar medium. We also discuss radio images of 3C 397 and SN 1006 AD in comparison with 3C 396. We will examine possible spectral index variations across the remnant. This research is supported by NASA grant NAG5-7153 and NGT5-65 through the Graduate Student Researchers Program.
American Astronomical Society Meeting Abstracts #194
- Pub Date:
- May 1999