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X-RAY ASTRONOMY EXPERIMENT ON THE INDIAN SATELLITE IRS-P3 KCI 등재 SCOPUS

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천문학회지 (Journal of The Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

An x-ray astronomy experiment consisting of three collimated proportional counters and an X-ray Sky Monitor (XSM) was flown aboard the Indian Satellite IRS-P3 launched on March 21, 1996 from SHAR range in India. The Satellite is in a circular orbit of 830 km altitude with an orbital inclination of 98° and has three axis stabilized pointing capability. Each pointed-mode Proportional Counter (PPC) is a multilayer, multianode unit filled with P-10 gas (90% Ar + 10% CH4) at 800 torr and having an aluminized mylar window of 25 micron thickness. The three PPCs are identical and have a field of view of 2°×2° defined by silver coated aluminium honeycomb collimators. The total effective area of the three PPCs is about 1200 cm2. The PPCs are sensitive in 2-20 keV band. The XSM consists of a pin-hole of 1 cm2 area placed 16 cm above the anode plane of a 32 cm×32 cm position sensitive proportional counter sensitive in 3-8 keV interval. The position of the x-ray events is determined by charge division technique using nichrome wires as anodes. The principal objective of this experiment is to carry out timing studies of x-ray pulsars, x-ray binaries and other rapidly varying x-ray sources. The XSM will be used to detect transient x-ray sources and monitor intensity of bright x-ray binaries. Observations of black-hole binary Cyg X-1 and few other binary sources were carried out in early May and July-August 1996 period. Details of the x-ray detector characteristics are presented and preliminary results from the observations are discussed.

저자
  • P. C. AGRAWAL(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • B. PAUL(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • A. R. RAO(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • M. R. SHAH(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • K. MCKERJEE(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • M. N. VARIA(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • J. S. YADAV(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • D. K. DEDHIA(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • J. P. MALKAR(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • P. SHAH(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • S. V. DAMLE(Tata Institute of Fundamental Research, Homi Bhabha Road)
  • T. M. K. MARAR(ISRO Satellite Centre, Airport Road)
  • S. SEETHA(ISRO Satellite Centre, Airport Road)
  • V.R. CHITNIS(ISRO Satellite Centre, Airport Road)
  • N. UPADHYAYA(ISRO Satellite Centre, Airport Road)
  • R. K. SHARMA(ISRO Satellite Centre, Airport Road)
  • N.S. MURTHY(ISRO Satellite Centre, Airport Road)
  • C. N. UMAPATHY(ISRO Satellite Centre, Airport Road)
  • L. ABRAHAM(ISRO Satellite Centre, Airport Road)
  • K. KASTURIRANGAN(ISRO Satellite Centre, Airport Road)