Nordita Astrophysics seminars

New radio solar emission at meterwavelentghs

by Mr Rohit Sharma (Research Scholor)

122:026 ()


Murchison Widefield Array (MWA) located in western Australia is an excellent interferometer in producing high-dynamic range spectroscopic imaging maps at meterwavelengths (80-300 MHz). The MWA solar dynamic spectra show faint features, typically spanning less than 1 MHz and lasting a few seconds. These features are seen even during periods of low solar activity and their short temporal and spectral spans strongly indicate a non-thermal origin. They are unlike any of the usual known types of solar bursts in their characteristics, but come closest to being highly scaled down versions of type III like bursts. We quantify these new features in frequency time space. In this talk, I will focus on the characteristics of these emission features, along with some imaging results.