Abstract:
A new antenna system with a digital spectro-correlator that provides high temporal, spectral, and amplitude
resolutions has been commissioned at the Gauribidanur Observatory near Bangalore in India. Presently, it is
used for observations of the solar coronal transients in the scarcely explored frequency range ≈30–15 MHz.
The details of the antenna system, the associated receiver setup, and the initial observational results are
reported. Some of the observed transients exhibited quasi-periodicity in their time profiles at discrete frequencies.
Estimates of the associated magnetic field strength (B) indicate that B ≈ 0.06–1 G at a typical frequency such as
19.5 MHz.
