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On the radio emission of the preflare active regions

Published online by Cambridge University Press:  14 March 2005

L. V. Yasnov ,
V. M. Bogod ,
Y. Yan  and
V. S. Kotelnikov
L. V. Yasnov
Affiliation:
Radiophysics Research Institute, Saint-Petersburg State University, Saint-Petersburg, Russia email: [email protected]
V. M. Bogod
Affiliation:
Special Astrophysical Observatory RAS, Saint-Petersburg, Russia email: [email protected]
Y. Yan
Affiliation:
National Astronomical Observatories CAS, Beijing, China email: [email protected]
V. S. Kotelnikov
Affiliation:
Radiophysics Research Institute, Saint-Petersburg State University, Saint-Petersburg, Russia email: [email protected]
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This work is devoted to the new phenomena appearing in radio emission in preflare active regions that were found with the use of radio telescope RATAN-600. The first is the complicated spectral-polarization behavior in narrow frequency range and, in particularly, the double changing of the polarization emission sign in active region at the time interval of several days before big flare. The second, the detection of regular decreasing of radio brightness radio darkening of active regions, which is also observed in a few days prior to flare [Tokhchukova & Bogod (2003)].To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS223 , June 2004 , pp. 493 - 494
Copyright
© 2004 International Astronomical Union