Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..565..279d&link_type=abstract
YOUNG SUPERNOVA REMNANTS: Eleventh Astrophysics Conference. AIP Conference Proceedings, Volume 565, pp. 279-282 (2001).
Astronomy and Astrophysics
Astrophysics
Supernova Remnants, Supernovae, X-Ray
Scientific paper
A new epoch of VLA measurements of Kepler's supernova remnant was obtained to make accurate measurements of the proper motions, spectral indices, and other properties. We have combined these new images with Hα, infrared, and X-ray data to decipher the three dimensional structure and dynamics of Kepler, and to better understand the physical relationships between the various nonthermal and thermal plasmas. Spatial variations in the radio spectral index are observed between λ6 and λ20 cm. The spectral indices range from -0.85 to -0.6. The flat spectrum radio emission in the northern and southern parts of the ring is either coincident with or at a larger radius than the steep spectrum emission. In places, the X-ray emission is correlated with the steep spectrum radio emission, in other places, with the flat spectrum radio emission. The Hα and infrared images are remarkably similar. Their leading edges are coincident and are either in front of or coincident with the leading edges of the X-ray and radio emission. .
DeLaney Tracey
Dickel John R.
Koralesky Barron
Rudnick Lawrence
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