Wednesday 24 August 2016
to 14:30 at
Rohit Sharma ( NCRA-TIFR, Pune)
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.