Name: Shubham Ghatul
Affiliation: Indian Institute of Astrophysics Bengaluru
Conference ID : ASI2022_65
Title : Development of Spectrograph in FUV region for a possible ISRO flight
Authors : Ghatul S.1, Bharat C.1, Nair B. 1, Shanti Prabha1, Rai R.1, Mohan R.1, Safonova M.1, Jayant Murthy1, S. Diebold2, J. Barnstedt2, L. Conti2, N. Kappelmann2, B. Stelzer2, K. Werner2 1Indian Institute of Astrophysics, Bengaluru 2Institute for Astronomy and Astrophysics, University of Tübingen
Abstract Type: Poster
Abstract Category : Instrumentation and Techniques
Abstract : The FUV (900-1800 Å) is the richest part of the spectrum in terms of emission lines – O VI (1032/1038 Å) and C IV (1548/1550 Å) from hot gas, C III (977 Å) and N III (1750 Å) from warm gas, and the Lyman and Werner bands of molecular hydrogen from cold gas. We plan a proposal-driven mission of emission line spectroscopy of extended sources in the FUV with a spectral resolution, sufficient to separate the O VI doublet and to resolve the molecular hydrogen bands. Our long-slit spectrograph will take simultaneous spectra of multiple locations to track different phases of the gas in extended regions from nebulae to galaxy clusters. The proposed spectral range necessitates a windowless detector for which we have begun a collaboration with the Institute of Astronomy and Astrophysics (IAAT) at the University of Tubingen. They will provide a 40 mm X 40 mm GaN detector with a peak efficiency of 70%. The name of this mission has hence been chosen to be Tubingen-IIA Nebular Investigator (TINI).