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Article: Interferometric observations of solar flares at 3 mm wavelength
Title | Interferometric observations of solar flares at 3 mm wavelength |
---|---|
Authors | |
Issue Date | 1993 |
Publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/asr |
Citation | Advances In Space Research, 1993, v. 13 n. 9, p. 289-293 How to Cite? |
Abstract | We report on the observations of a number of flares at a wavelength of 3.5 mm during the 1991 June solar campaign. Many flares, including small ones, show an impulsive phase at milllimeter wavelengths which indicates the presence of MeV electrons, and the millimeter observations are far more sensitive to such electrons than are current γ-ray detectors. However, these energetic electrons do not always show a good correlation with the lower-energy electrons which produce hard X-rays below 100 keV. The production efficiency of MeV electrons seems to vary considerably from flare to flare. An extended phase similar to the soft X-ray behaviour is also seen at millimeter wavelengths, which we attribute to dense hot material radiating thermal bremsstrahlung. In the impulsive onset the millimeter emission seems to be consistently delayed with respect to the hard X-rays. © 1993. |
Persistent Identifier | http://hdl.handle.net/10722/175134 |
ISSN | 2023 Impact Factor: 2.8 2023 SCImago Journal Rankings: 0.663 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kundu, MR | en_US |
dc.contributor.author | White, SM | en_US |
dc.contributor.author | Gopalswamy, N | en_US |
dc.contributor.author | Lim, J | en_US |
dc.date.accessioned | 2012-11-26T08:49:22Z | - |
dc.date.available | 2012-11-26T08:49:22Z | - |
dc.date.issued | 1993 | en_US |
dc.identifier.citation | Advances In Space Research, 1993, v. 13 n. 9, p. 289-293 | en_US |
dc.identifier.issn | 0273-1177 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/175134 | - |
dc.description.abstract | We report on the observations of a number of flares at a wavelength of 3.5 mm during the 1991 June solar campaign. Many flares, including small ones, show an impulsive phase at milllimeter wavelengths which indicates the presence of MeV electrons, and the millimeter observations are far more sensitive to such electrons than are current γ-ray detectors. However, these energetic electrons do not always show a good correlation with the lower-energy electrons which produce hard X-rays below 100 keV. The production efficiency of MeV electrons seems to vary considerably from flare to flare. An extended phase similar to the soft X-ray behaviour is also seen at millimeter wavelengths, which we attribute to dense hot material radiating thermal bremsstrahlung. In the impulsive onset the millimeter emission seems to be consistently delayed with respect to the hard X-rays. © 1993. | en_US |
dc.language | eng | en_US |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/asr | en_US |
dc.relation.ispartof | Advances in Space Research | en_US |
dc.title | Interferometric observations of solar flares at 3 mm wavelength | 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.scopus | eid_2-s2.0-43949171472 | en_US |
dc.identifier.volume | 13 | en_US |
dc.identifier.issue | 9 | en_US |
dc.identifier.spage | 289 | en_US |
dc.identifier.epage | 293 | en_US |
dc.identifier.isi | WOS:A1993LX18400043 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Kundu, MR=7102095820 | en_US |
dc.identifier.scopusauthorid | White, SM=7404079906 | en_US |
dc.identifier.scopusauthorid | Gopalswamy, N=7005931847 | en_US |
dc.identifier.scopusauthorid | Lim, J=7403453870 | en_US |
dc.identifier.issnl | 0273-1177 | - |