Soft X-ray Focusing Telescope Aboard AstroSat: Design, Characteristics and Performance
K. P. Singh G. C. Stewart N. J. Westergaard S. Bhattacharayya S. Chandra V. R. Chitnis G. C. Dewangan A. T. Kothare I. M. Mirza K. Mukerjee V. Navalkar H. Shah A. F. Abbey A. P. Beardmore S. Kotak N. Kamble S. Vishwakarama D. P. Pathare V. M. Risbud J. P. Koyande T. Stevenson C. Bicknell T. Crawford G. Hansford G. Peters J. Sykes P. Agarwal M. Sebastian A. Rajarajan G. Nagesh S. Narendra M. Ramesh R. Rai K. H. Navalgund K. S. Sarma R. Pandiyan K. Subbarao T. Gupta N. Thakkar A. K. Singh A. Bajpai
The Soft X-ray focusing Telescope (SXT), India’s first X-ray telescope based on the principle of grazing incidence, was launched aboard the AstroSat and made operational on October 26, 2015. X-rays in the energy band of 0.3–8.0 keV are focussed on to a cooled charge coupled device thus providing medium resolution X-ray spectroscopy of cosmic X-ray sources of various types. It is the most sensitive X-ray instrument aboard the AstroSat. In its first year of operation, SXT has been used to observe objects ranging from active stars, compact binaries, supernova remnants, active galactic nuclei and clusters of galaxies in order to study its performance and quantify its characteriztics. Here, we present an overview of its design, mechanical hardware, electronics, data modes, observational constraints, pipeline processing and its in-orbit performance based on preliminary results from its characterization during the performance verification phase.
K. P. Singh1 G. C. Stewart2 N. J. Westergaard3 S. Bhattacharayya1 S. Chandra1 V. R. Chitnis1 G. C. Dewangan4 A. T. Kothare1 I. M. Mirza1 K. Mukerjee1 V. Navalkar1 H. Shah1 A. F. Abbey2 A. P. Beardmore2 S. Kotak1 N. Kamble1 S. Vishwakarama1 D. P. Pathare1 V. M. Risbud1 J. P. Koyande1 T. Stevenson2 C. Bicknell2 T. Crawford2 G. Hansford2 G. Peters2 J. Sykes2 P. Agarwal5 M. Sebastian5 A. Rajarajan5 G. Nagesh6 S. Narendra6 M. Ramesh6 R. Rai6 K. H. Navalgund6 K. S. Sarma6 R. Pandiyan6 K. Subbarao6 T. Gupta7 N. Thakkar7 A. K. Singh7 A. Bajpai1
Volume 41, 2020
Continuous Article Publishing mode
Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.
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