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    • Fulltext

       

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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

       
      Published
      3 July 2021
      Manuscript received
      7 November 2020
      Accepted
      22 April 2021
      Final version published online
      3 July 2021

  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      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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      Posted on July 25, 2019

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