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Title: The First Low-frequency Radio Observations of the Solar Corona on ≈200 km Long Interferometer Baseline
Authors: Mugundhan, V
Ramesh, R
Kathiravan, C
Gireesh, G. V. S
Anshu Kumari
Hariharan, K
Barve, Indrajit V
Keywords: Instrumentation: high angular resolution;Instrumentation: interferometers;Sun: activity;Sun: corona;Sun: flares;Sun: radio radiation
Issue Date: 1-Mar-2018
Publisher: IOP Publishing
Citation: The Astrophysical Journal Letters, Vol. 855, No. 1, L8
Abstract: The angular size of the smallest, compact radio source that can be observed in the solar atmosphere is one of the intriguing questions in low-frequency radio astronomy. This is important to understand density turbulence in the solar corona and the related angular broadening of the radio source sizes. We used a two-element interferometer with a baseline length of ≈200 km, operating at ≈53 MHz to infer the above limit. Our results indicate that radio sources of angular size ≤15'' exist in the solar corona, where radio emission at the above frequency also originates.
Description: Restricted Access
ISSN: 2041-8205
???metadata.dc.rights???: © The American Astronomical Society
Appears in Collections:IIAP Publications

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