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Article: The high-frequency characteristics of solar radio bursts
Title | The high-frequency characteristics of solar radio bursts |
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Authors | |
Issue Date | 1992 |
Publisher | Springer 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? |
Abstract | We 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 Identifier | http://hdl.handle.net/10722/174622 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.804 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lim, J | en_US |
dc.contributor.author | White, SM | en_US |
dc.contributor.author | Kundu, MR | en_US |
dc.contributor.author | Gary, DE | en_US |
dc.date.accessioned | 2012-11-26T08:46:34Z | - |
dc.date.available | 2012-11-26T08:46:34Z | - |
dc.date.issued | 1992 | en_US |
dc.identifier.citation | Solar Physics, 1992, v. 140 n. 2, p. 343-368 | en_US |
dc.identifier.issn | 0038-0938 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/174622 | - |
dc.description.abstract | We 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.language | eng | en_US |
dc.publisher | Springer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0038-0938 | en_US |
dc.relation.ispartof | Solar Physics | en_US |
dc.title | The high-frequency characteristics of solar radio bursts | en_US |
dc.type | Article | en_US |
dc.identifier.email | Lim, J: jjlim@hku.hk | en_US |
dc.identifier.authority | Lim, J=rp00745 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1007/BF00146317 | en_US |
dc.identifier.scopus | eid_2-s2.0-0000824286 | en_US |
dc.identifier.volume | 140 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 343 | en_US |
dc.identifier.epage | 368 | en_US |
dc.identifier.isi | WOS:A1992JK75300008 | - |
dc.publisher.place | Netherlands | en_US |
dc.identifier.scopusauthorid | Lim, J=7403453870 | en_US |
dc.identifier.scopusauthorid | White, SM=7404079906 | en_US |
dc.identifier.scopusauthorid | Kundu, MR=7102095820 | en_US |
dc.identifier.scopusauthorid | Gary, DE=7005231589 | en_US |
dc.identifier.issnl | 0038-0938 | - |