Nordita Astrophysics Seminars

First observations of a solar type-II radio burst from the Murchison Widefield Array

by Divya Oberoi (National Centre for Radio Astrophysics, Tata Institute of Fundamental Research)

122:026 ()


The Murchison Widefield Array (MWA) is a new-technology low frequency (80-300 MHz) SKA precursor located in the radio quiet Western Australian Outback. Solar and Heliospheric science are amongst the key science objectives of the MWA. Its spectroscopic imaging capability with much higher imaging fidelity than the earlier generation of instruments make it especially well suited for following dynamics in solar radio images simultaneously along time, frequency and polarization axes. Type II solar bursts are usually associated with coronal mass ejections and believed to be produced upstream of shock waves driven by coronal mass ejections (CMEs) in the solar corona and solar wind. This talk will use the first such burst observed by the MWA to illustrate the wealth of knowledge which the new generation of low frequency arrays can provide, and compare the observations to the expectations based on the present models.