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Article: The high-frequency characteristics of solar radio bursts

TitleThe high-frequency characteristics of solar radio bursts
Authors
Issue Date1992
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0038-0938
Citation
Solar Physics, 1992, v. 140 n. 2, p. 343-368 How to Cite?
AbstractWe compare the millimeter, microwave, and soft X-ray emission from a number of solar flares in order to determine the properties of the high-frequency radio emission of flares. The millimeter observations use a sensitive interferometer at 86 GHz which offers much better sensitivity and spatial resolution than most previous high-frequency observations. We find a number of important results for these flares: (i) the 86 GHz emission onset appears often to be delayed with respect to the microwave onset; (ii) even in large flares the millimeter-wavelength emission can arise in sources of only a few arc sec dimension; (iii) the millimeter emission in the impulsive phase does not correlate with the soft X-ray emission, and thus is unlikely to contain any significant thermal bremsstrahlung component; and (iv) the electron energy distributions implied by the millimeter observations are much flatter (spectral indices of 2.5 to 3.6) than is usual for microwave or hard X-ray observations. © 1992 Kluwer Academic Publishers.
Persistent Identifierhttp://hdl.handle.net/10722/174622
ISSN
2015 Impact Factor: 2.862
2015 SCImago Journal Rankings: 2.485
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLim, Jen_US
dc.contributor.authorWhite, SMen_US
dc.contributor.authorKundu, MRen_US
dc.contributor.authorGary, DEen_US
dc.date.accessioned2012-11-26T08:46:34Z-
dc.date.available2012-11-26T08:46:34Z-
dc.date.issued1992en_US
dc.identifier.citationSolar Physics, 1992, v. 140 n. 2, p. 343-368en_US
dc.identifier.issn0038-0938en_US
dc.identifier.urihttp://hdl.handle.net/10722/174622-
dc.description.abstractWe compare the millimeter, microwave, and soft X-ray emission from a number of solar flares in order to determine the properties of the high-frequency radio emission of flares. The millimeter observations use a sensitive interferometer at 86 GHz which offers much better sensitivity and spatial resolution than most previous high-frequency observations. We find a number of important results for these flares: (i) the 86 GHz emission onset appears often to be delayed with respect to the microwave onset; (ii) even in large flares the millimeter-wavelength emission can arise in sources of only a few arc sec dimension; (iii) the millimeter emission in the impulsive phase does not correlate with the soft X-ray emission, and thus is unlikely to contain any significant thermal bremsstrahlung component; and (iv) the electron energy distributions implied by the millimeter observations are much flatter (spectral indices of 2.5 to 3.6) than is usual for microwave or hard X-ray observations. © 1992 Kluwer Academic Publishers.en_US
dc.languageengen_US
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0038-0938en_US
dc.relation.ispartofSolar Physicsen_US
dc.titleThe high-frequency characteristics of solar radio burstsen_US
dc.typeArticleen_US
dc.identifier.emailLim, J: jjlim@hku.hken_US
dc.identifier.authorityLim, J=rp00745en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/BF00146317en_US
dc.identifier.scopuseid_2-s2.0-0000824286en_US
dc.identifier.volume140en_US
dc.identifier.issue2en_US
dc.identifier.spage343en_US
dc.identifier.epage368en_US
dc.identifier.isiWOS:A1992JK75300008-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridLim, J=7403453870en_US
dc.identifier.scopusauthoridWhite, SM=7404079906en_US
dc.identifier.scopusauthoridKundu, MR=7102095820en_US
dc.identifier.scopusauthoridGary, DE=7005231589en_US

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