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

Abstract

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.

5 pages including 2 figures; ApJL, in press

References in corpus (1)

• X-Ray Observations of the supernova remnant G21.5-0.9

Cited by in corpus (16)

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• Study of Four Young TeV Pulsar Wind Nebulae with a Spectral Evolution Model
• The Expansion and Radio Spectral Index of G21.5-0.9: Is PSR J1833-1034 the Youngest Pulsar?
• Time-dependent Modeling of Pulsar Wind Nebulae
• The nature of the X-ray halo of the plerion G21.5-0.9 unveiled by XMM-Newton and Chandra
• Discovery of the energetic pulsar J1747-2809 in the supernova remnant G0.9+0.1
• The Radio Properties and Magnetic Field Configuration in the Crab-like Pulsar Wind Nebula G54.1+0.3
• Measurement of Spectral Breaks in Pulsar Wind Nebulae with Millimeter-wave Interferometry
• Thermal radio absorption as a tracer of the interaction of SNRs with their environments
• Gravitational microlensing of gamma-ray blazars
• The Nonstandard Properties of a "Standard" PWN: Unveiling the Mysteries of PWN G21.5-0.9 Using its IR and X-ray emission
• Outflow and Emission Model of Pulsar Wind Nebulae with the Back-reaction of Particle Diffusion
• The Deepest Radio Study of the Pulsar Wind Nebula G21.5-0.9: Still No Evidence for the Supernova Shell
• Timing analysis of the core of the Crab-like SNR G21.5-0.9
• Detection of thermal X-ray emission in the halo of the plerionic supernova remnant G21.5-0.9