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AstroSat‘s first results: hard X-ray polarisation
Prof. A.R. Rao
On the first day of operation of AstroSat scientific payloads, a gamma-ray burst (GRB 151006A) was serendipitously observed and there were hints of hard X-ray polarisation in the data. Subsequent observations and detailed analysis showed very exciting results on change of polarisation angle as a function of pulse phase in the Crab pulsar and spectral state dependent polarisation in the black hole source Cygnus X-1.
First results from the Soft X-ray Telescope aboard AstroSat
Prof. K. P. Singh
The Soft X-ray focusing Telescope has observed a number of sources, as part of its performance verification plan.. These range from sun like active stars, accreting magnetic white dwarfs, supernova remnants, X-ray binaries with accreting neutron stars and black-holes, active galactic nuclei and clusters of galaxies. Some of the results will be presented, and the low background and excellent spectral capabilities of the SXT will be highlighted.
Astrosat/LAXPC performance in orbit and first results
Prof. J.S. Yadav
Astrosat/LAXPC instrument has performed well in orbit and has achieved all parameters proposed initially. We will compare its performance with similar X-ray space instruments world wide. LAXPC instrument has observed variety of X-ray sources in the sky and we will present first results from some of these observations to high light unique timing and spectral capabilities of LAXPC
instrument.
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