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The spectrum and variability of radio emission from AE AquariiThe first detections of the magnetic cataclysmic variable AE Aquarii at millimeter wavelengths are reported. AE Aqr was detected at wavelengths of 3.4 and 1.25 mm. These data are used to show that the time-averaged spectrum is generally well fitted by a power law S(nu) varies as nu exp alpha, where alpha is approximately equal to 0.35-0.60, and that the power law extends to millimeter wavelengths, i.e., the spectral turnover is at a frequency higher than 240 GHz. It is suggested that the spectrum is consistent with that expected from a superposition of flarelike events where the frequency distribution of the initial flux density is a power law f (S0) varies as S0 exp -epsilon, with index epsilon approximately equal to 1.8. Within the context of this model, the high turnover frequency of the radio spectrum implies magnetic field strengths in excess of 250 G in the source.
Document ID
19930049526
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Abada-Simon, Meil
(NASA Headquarters Washington, DC United States)
Lecacheux, Alain
(Paris Observatoire, Meudon, France)
Bastian, Tim S.
(National Radio Astronomy Observatory Socorro, NM, United States)
Bookbinder, Jay A.
(Harvard-Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Dulk, George A.
(Paris, Observatoire, Meudon, France; Colorado Univ. Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
April 1, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 406
Issue: 2
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A33523
Funding Number(s)
CONTRACT_GRANT: NAGW-1994
CONTRACT_GRANT: NSF INT-89-14412
Distribution Limits
Public
Copyright
Other

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