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Title: High dynamic range observations of solar coronal transients at low radio frequencies with a spectro-correlator
Authors: Hariharan, K
Ramesh, R
Kathiravan, C
Abhilash, H. N
Rajalingam, M
Keywords: Instrumentation: interferometers;Instrumentation: polarimeters;Sun: corona;Sun: magnetic fields
Issue Date: Feb-2016
Publisher: IOP Publishing
Citation: The Astrophysical Journal Supplement Series, Vol. 222, No. 2, 21
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.
Description: Restricted Access
ISSN: 0067-0049
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Appears in Collections:IIAP Publications

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