Observational characteristics of weak polarized microwave spikes

Details Observational characteristics of weak polarized microwave spikes Observational characteristics of weak polarized microwave spikes

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999soph..189..331w&link_type=abstract

Solar Physics, v. 189, Issue 2, p. 331-344 (1999).

Physics

5

Scientific paper

Eleven microwave spike events observed with the 2.6-3.8 GHz spectrometer of Beijing Astronomical Observatory (BAO) are analysed. The polarization degrees of spikes are variable, some spikes have frequency drift with the drift rate of several GHz s^-1. In particular, the time delay (8 ms) between the two polarization modes of spike is detected, which is different from previous results. According to the leading spot rule, we conclude that the o-modes arrive first. Moreover, the reversal of polarization sense versus frequency is also found. A change of the emission mode may be the cause of the polarization reversal.

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