Special fine structures of solar radio bursts on April 15 1998

Details Special fine structures of solar radio bursts on April 15 1998 Special fine structures of solar radio bursts on April 15 1998

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...364..853n&link_type=abstract

Astronomy and Astrophysics, v.364, p.853-858 (2000)

Astronomy and Astrophysics

Astrophysics

5

Sun: Activity, Sun: Radio Radiation

Scientific paper

The 2.60-3.80 GHz spectrometer in Beijing Astronomical Observatory (BAO) recorded two remarkable ``decimetric pulsation" events (DCIM) around the time 1998 0415 0800 UT. High resolution dynamic spectra revealed various new fine structures during the rising phase of the second DCIM, which seem different from ``zebra patterns" well known at lower frequencies. The high frequency limit of the second DCIM is delineated by 1 to 3 narrow and continuous emission bands whose frequencies fluctuate in parallel, and which occasionally split and merge. They look like the ``evolving emission line" (EEL) reported by Chernov et al. (1998) at lower frequencies. It is the second time that such a feature has been recorded, and the first time above 1 GHz.

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