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

D. C.J. Bock | Zendy; M. C. H. Wright | Zendy; John R. Dickel | Zendy

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

Author(s) -

D. C.J. Bock,

M. C. H. Wright,

John R. Dickel

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/324703

Subject(s) - supernova remnant , millimeter , physics , astrophysics , wavelength , synchrotron , full width at half maximum , acceleration , radio spectrum , supernova , resolution (logic) , radio frequency , beam (structure) , angular resolution (graph drawing) , astronomy , angular diameter , optics , telecommunications , mathematics , classical mechanics , combinatorics , artificial intelligence , computer science , stars

We present a BIMA image of the supernova remnant G21.5-0.9 at 94 GHz withangular resolution 8.6" x 4.5". On scales larger than our synthesized beam, ourresults do not indicate any radial or local variations in the acceleration orsynchrotron loss processes for the relativistic particles emitting at radiowavelengths. However, the FWHM size of the radio remnant is significantlygreater than that of the X-ray remnant. Either any low-frequency spectral breakis distributed across the remnant, or more probably the break frequency is infact higher than ~100 GHz.Comment: 5 pages including 2 figures; ApJL, in pres

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