Abstract Details
| Name: Firoza Sutaria Affiliation: Indian Institute of Astrophysics Conference ID: ASI2018_597 Title : UV studies of X-ray and optically bright SNRs. Authors and Co-Authors : A. Ray (TIFR, Mumbai), J. Murthy (IIA, Bangalore), N. K. Rao (IIA, Bangalore) Abstract Type : Contributed Talk Abstract Category : Stars,ISM and the Galaxy Abstract : Galactic Supernovae Remnants (SNRs) provide a unique opportunity to study the very late term evolution of the shock-ISM interaction from a supernova explosion. We present here results from our program to image and study a few, well resolved, x-ray and optically bright, SNRs of varying ages ( $(18000 \pm 9000)$ yr (Vela) to 5000-8000 yr (Cygnus loop) to 1000 yr (Crab)) in the Astrosat/UVIT FUV and NUV bands. The FUV and NUV broad band filters allow mapping of the [C IV] (1550 Ang.), [He II] (1640 Ang.), and [Mg II] (2800 Ang.) emission features, thus identifying and isolating hot (10$^{4-5}$ K) and intermediate (5000- 8000 K) temperature regions in these SNRs. The Astrosat/SXT allows simultaneous mapping of the same regions in the soft x-ray (0.2-10 keV) bands, at temperatures of ($10^{6-7}$) K. Coupling these observations with high-resolution, soft x-ray, observations of these regions from {\it Chandra} and XMM-{\it Newton}, and cool, optical regions from archival data, we study the temporal evolution of SNRs from different classes of SNe, in a varying range of environments, in the UV. |