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Agrawal, P. C.
- B. V. Sreekantan: A Versatile and Humane Scientist
Abstract Views :217 |
PDF Views:73
Authors
Affiliations
1 UM-DAE Center for Excellence in Basic Sciences Mumbai University Campus, Vidhyanagari, Kalina Mumbai 400 098, IN
1 UM-DAE Center for Excellence in Basic Sciences Mumbai University Campus, Vidhyanagari, Kalina Mumbai 400 098, IN
Source
Current Science, Vol 108, No 9 (2015), Pagination: 1731-1740Abstract
No Abstract.Full Text
- Large Area X-Ray Proportional Counter Instrument on AstroSat
Abstract Views :199 |
PDF Views:69
Authors
Affiliations
1 Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, IN
2 UM-DAE Centre of Excellence for Basic Sciences, University of Mumbai, Kalina, Mumbai 400 098, IN
3 University of Mumbai, Kalina, Mumbai 400 098, IN
4 Department of Astronomy and Astrophysics, Raman Research Institute, Bengaluru 560 080, IN
5 Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune 411 007, IN
1 Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, IN
2 UM-DAE Centre of Excellence for Basic Sciences, University of Mumbai, Kalina, Mumbai 400 098, IN
3 University of Mumbai, Kalina, Mumbai 400 098, IN
4 Department of Astronomy and Astrophysics, Raman Research Institute, Bengaluru 560 080, IN
5 Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune 411 007, IN
Source
Current Science, Vol 113, No 04 (2017), Pagination: 591-594Abstract
Large Area X-ray Proportional Counter (LAXPC) is one of the major AstroSat payloads. The instrument will provide high time-resolution X-ray observations in 3-80 keV energy band with moderate energy resolution. A cluster of three co-aligned identical LAXPC detectors is used in AstroSat to provide large collection area of more than 6000 sq. cm. The large detection volume (15 cm depth) filled with xenon gas at ~2 atm pressure, results in detection efficiency greater than 50% above 30 keV. With its broad energy range and fine-time resolution (10 μs), LAXPC instrument is well suited for timing and spectral studies of a wide variety of known and transient X-ray sources in the sky. We have done extensive calibration of all LAXPC detectors using radioactive sources as well as GEANT4 simulation of LAXPC detectors. We describe in brief some of the results obtained during the payload verification phase along with LAXPC capabilities.Keywords
Energy- and Time-Resolution, Payloads, Space Observatory, X-Ray Sources.Full Text
References
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- Yadav, J. S. et al., Large area X-ray proportional counter (LAXPC) instrument onboard AstroSat. SPIE, 2016, 9905, 99051D-1–99051D-15.
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- Antia, H. M. et al., Calibration of the large area X-ray proportional counter (LAXPC) instrument on-board AstroSat. ApJS, 2017, 231(10), 29.
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- Paul, B., Agrawal, P. C., Rao, A. R., Vahia, M. N., Yadav, J. S. Seetha, S. and Kasturirangan, K., Quasi-regular X-ray bursts from GRS 1915+105 observed with the IXAE: possible evidence for matter disappearing into the event horizon of the black hole. ApJ, 1998, 492, L63–L66.