Abstract Details
| Name: Shyama Narendranath Affiliation: ISAC, Bengaluru Conference ID: ASI2019_119 Title : FIP bias variations in solar flares using soft X ray spectroscopy Authors and Co-Authors : S. Narendranath , P. Sreekumar , Netra S Pillai , S. Panini , K. Sankarasubramanian Abstract Type : Oral Abstract Category : Sun and the Solar System Abstract : The coronal plasma is known to have elemental abundances different from that of the photosphere. Time resolved soft X ray spectroscopy allows estimation of elemental abundances in the coronal plasma during flares. We present new results on FIP bias variations during flares from analysis of spectra from XSM on SMART-1 and SAX-MESSENGER. We show that FIP bias reduces during the peak of the flare indicative of a deeper mixing of the plasma with that of the lower layers of the Sun. These results are first of its kind and point to the need for imaging high resolution spectroscopy of the Sun especially in the < 2 keV region (see abstract on “ A quiet Sun imager: Design and Science prospects). |