Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281l..33r&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 281, June 1, 1984, p. L33-L35.
Astronomy and Astrophysics
Astronomy
35
Nonthermal Radiation, Novae, Radio Sources (Astronomy), Stellar Radiation, Relativistic Particles, Supernova Remnants, Synchrotron Radiation, Very Large Array (Vla)
Scientific paper
Physical processes that accelerate relativistic electrons and enhance the magnetic field in young supernova remnants such as Cas A or Tycho should also operate, on a smaller scale, in old nova shells. A report is presented of the detection of nonthermal radio emission from the remnant of GK Persei (Nova Persei 1901) with the Very Large Array (VLA); observations at 1465 and 4835 MHz imply a spectrum S-nu = 24.0 /(nu/1 GHz) to the -(2/3) power/ mJy. The emission has a partial shell morphology and coincides with the brightest portion of the optical shell. It is found that a minimum of about 1 percent of the original approximately 10 to the 45th ergs in the explosion has gone into relativistic electrons and magnetic field. This minimum efficiency is about an order of magnitude larger than that found in young supernova remnants.
Chevalier Roger A.
Reynolds Stephen P.
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