Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event

Details Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010soph..261..281k&link_type=abstract

Solar Physics, Volume 261, Issue 2, pp.281-294

Physics

4

Sun: Flares, Sun: Radio Radiation, Methods: Data Analysis

Scientific paper

Radio pulsations observed during the 11 April 2001 event at six single frequencies (237, 327, 408, 610, 1420, and 2695 MHz) by the Trieste radio-polarimeter with a time resolution 10 ms are analyzed. A wavelet analysis method as well as time delay and polarization measurements are used. Both methods reveal pulsations with a period of about 0.1 s at all observed frequencies. Furthermore, the 0.1 s pulsations drift toward higher and lower frequencies, starting at about 1420 MHz. The polarization of pulsations increases with frequency and time. The remarkable fact that the detected 0.1 s period of pulsations does not depend on frequency in a very broad frequency range is discussed in terms of existing models of pulsations.

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