Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-12-01T12:43:23.286Z Has data issue: false hasContentIssue false
  • English
  • Français

Coronal Magnetic Fields Deduced from Radio Methods

Published online by Cambridge University Press:  12 April 2016

A. Krüger  and
J. Hildebrandt
A. Krüger
Affiliation:
Astrophysical Institute Potsdam, An der Sternwarte 16, D-O-1591 Potsdam-Babelsberg, Germany
J. Hildebrandt
Affiliation:
Astrophysical Institute Potsdam, An der Sternwarte 16, D-O-1591 Potsdam-Babelsberg, Germany

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Major problems of the physics of the solar atmosphere and processes of solar activity are due to the poor knowledge of the magnetic fields outside the photosphere. Unique methods to determine magnetic fields in the corona and chromosphere make use of radio observations in close connection with information obtained in other spectral ranges e.g. the optical and X-ray regions. Based on relevant emission and propagation processes, the basic radio methods providing information on the parent magnetic fields are summarized. Signatures in the microwave and meter wave regions are used to derive magnetic field parameters at different levels in the solar atmosphere of active regions during quiet and flaring conditions. Implications on fine and gross structures are briefly discussed and consequences on acting physical processes mentioned.

Type
Session 5. Fields in the Chromosphere and Corona
Information
International Astronomical Union Colloquium , Volume 141: The Magnetic and Velocity Fields of Solar Active Regions , 1993 , pp. 249 - 257
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Alissandrakis, C.E., Kundu, M.R., & Lantos, P. 1980, A&A, 82, 30 Google Scholar
Bandiera, R. 1982, A&A, 112, 52 Google Scholar
Batchelor, D.A., Benz, A.O., & Wiehl, H.J. 1984, ApJ, 280, 879 Google Scholar
Brosius, J.W., & Holman, G.D. 1988, ApJ, 327, 417 Google Scholar
Bruggmann, G., Benz, A.O., Magun, A., & Stehling, W. 1990, A&A, 240, 506 Google Scholar
Cohen, M.H. 1960, ApJ, 131, 664 Google Scholar
Dulk, G.A., & McLean, D.J. 1978, Solar Phys. 57, 279 Google Scholar
Fomichev, V.V., & Chertok, I.M. 1965, AZh, 42, 1256 Google Scholar
Gelfreikh, G.B. 1990, Astron. Nachr., 311, 385 Google Scholar
Gelfreikh, G.B., & Lubyshev, B.I. 1979, AZh, 56, 562 Google Scholar
Hildebrandt, J., Seehafer, N., & Krüger, A. 1984, A&A, 134, 185 Google Scholar
Holman, G.D., & Kundu, M.R. 1985, ApJ, 292, 291 Google Scholar
Hoyng, P., Duijveman, A., van Grunsven, Th.F.J., & Nicholson, D.R. 1980, in Solar and Interplanetary Dynamics, ed. Dryer, M. & Tandberg-Hanssen, E. (Dordrecht:D. Reidel), 299 Google Scholar
Krüger, A. & Hildebrandt, J. 1991, Contribution to the XXI General Assembly of IAU, Buenos Aires.Google Scholar
Krüger, A., Hildebrandt, J., & Fürstenberg, F. 1985, A&A, 143, 72 Google Scholar
Krüger, A., Hildebrandt, J., Bogod, V.M., Korzhavin, A.N., Akhmedov, Sh.B., & Gelfreikh, G.B. 1986, Solar Phys., 105, 111 Google Scholar
Krüger, A., Hildebrandt, J., Kliem, B., Auraß, H., Kurths, J., Fomichev, V.V., Chertok, I.M., & Křivský, L. 1991, Solar Phys., 134, 171 CrossRefGoogle Scholar
Krüger, A., & Urpo, S. 1992, in Eruptive Solar Flares, ed. Švestka, Z., Jackson, B. V., & Machado, M.E. (Berlin:Springer), 214 Google Scholar
Kuijpers, J. 1975, Solar Phys., 44, 173 Google Scholar
Kundu, M.R., & Alissandrakis, C.E. 1984, Solar Phys., 94, 249 Google Scholar
Lang, K.R., Willson, R.F., Smith, K.L., & Strong, K.T. 1987, ApJ, 322, 1044 Google Scholar
Mann, G., & Baumgärtl, K. 1988, ESA SP-285, 153Google Scholar
Melrose, D.B., Dulk, G.A., & Smerd, S.F. 1978, A&A, 66, 315 Google Scholar
Newkirk, G. Jr. 1967, ARA&A, 5, 213 Google Scholar
Peterova, N.G., & Akhmedov, Sh.B. 1973, AZh, 50, 1220 Google Scholar
Peterova, N.G., & Ryabov, B.I. 1981, AZh, 58, 1070 Google Scholar
Pikeiner, S.B., & Gintsburg, M.A. 1963, AZh, 40, 842 Google Scholar
Roberts, J.A. 1959, Aust. J. Phys., 12, 327 Google Scholar
Smerd, S.F., Sheridan, K.V., & Stewart, R.T. 1975, Astrophys. Lett., 16, 22 Google Scholar
Sturrock, P.A. 1961, Nature, 192, 58 Google Scholar
Stenflo, J.O. 1973, Solar Phys., 32, 41 CrossRefGoogle Scholar
Urpo, S., Hildebrandt, J., & Krüger, A. 1987, Solar Phys., 112, 119 Google Scholar
White, S.M., Kundu, M.R., & Gopalswamy, N. 1991, ApJ, 366, L43 Google Scholar
Zheleznyakov, V.V., & Zlotnik, E.Ya. 1975, Solar Phys., 44, 461 Google Scholar