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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/042/0070

    • Keywords

       

      Proportional counter; position sensitive X-ray detector; sky monitor; X-ray sky; codedmask; X-ray transient.

    • Abstract

       

      SSM onboard AstroSat is designed to monitor X-ray sky in the energy range 2.5–10 keV to detect and locate X-ray sources in outburst. SSM with its three almost identical 1D-proportional counters mounted on a rotating platform, scans the sky in step and stare mode of operation. It observes the X-ray skyand generates light curves for X-ray sources detected. Here, we discuss the positional calibration to carry out imaging with SSM. Onboard calibration of SSM has been carried out with Crab, the standard X-ray source. SSM observations of Crab are compared with that of MAXI on ISS for cross calibration of the instrument.

    • Author Affiliations

       

      ABHILASH R. SARWADE1 M. C. RAMADEVI1 B. T. RAVISHANKAR1 BRAJPAL SINGH1 BLESSY ELIZABETH BABY1 DIPANKAR BHATTACHARYA2 S. SEETHA3

      1. Space Astronomy Group, ISITE Campus, U.R. Rao Satellite Centre, Outer Ring Road, Marathahalli, Bengaluru 560 037, India.
      2. Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune 411 007, India.
      3. Department of Astronomy and Astrophysics, Raman Research Institute, Sadashivanagar, Bengaluru 560 080, India.
    • Dates

       
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