The Crab-like Supernova Remnant G21.5-0.9 at Millimeter Wavelengths

Details The Crab-like Supernova Remnant G21.5-0.9 at Millimeter Wavelengths The Crab-like Supernova Remnant G21.5-0.9 at Millimeter Wavelengths

2001-10-05

arxiv.org/abs/astro-ph/0110128v1

ApJ, 561, L203, 2001

Astronomy and Astrophysics

Astrophysics

5 pages including 2 figures; ApJL, in press

Scientific paper

10.1086/324703

We present a BIMA image of the supernova remnant G21.5-0.9 at 94 GHz with angular resolution 8.6" x 4.5". On scales larger than our synthesized beam, our results do not indicate any radial or local variations in the acceleration or synchrotron loss processes for the relativistic particles emitting at radio wavelengths. However, the FWHM size of the radio remnant is significantly greater than that of the X-ray remnant. Either any low-frequency spectral break is distributed across the remnant, or more probably the break frequency is in fact higher than ~100 GHz.

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