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Westergaard, N. J.
- Soft X-Ray Focusing Telescope Aboard Astrosat:Early Results
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PDF Views:111
Authors
K. P. Singh
1,
G. C. Dewangan
2,
S. Chandra
1,
S. Bhattacharayya
1,
V. Chitnis
1,
G. C. Stewart
3,
N. J. Westergaard
4
Affiliations
1 Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, IN
2 Inter-University Centre for Astronomy and Astrophysics, Pune 411 007, IN
3 Department of Physics and Astronomy, University of Leicester, Leicester, GB
4 Technical University of Denmark, National Space Institute, DK
1 Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, IN
2 Inter-University Centre for Astronomy and Astrophysics, Pune 411 007, IN
3 Department of Physics and Astronomy, University of Leicester, Leicester, GB
4 Technical University of Denmark, National Space Institute, DK
Source
Current Science, Vol 113, No 04 (2017), Pagination: 587-590Abstract
The Soft X-ray focusing Telescope (SXT) is a moderate-resolution X-ray imaging spectrometer supplementing the ultraviolet and hard X-ray payloads for broadband studies of cosmic sources with AstroSat. Well suited for observing bright X-ray sources, SXT observations of nearby active galactic nuclei (AGN), binary star systems with compact companions, active stars, etc. are producing long soft X-ray light curves and high-quality spectra. The strong X-ray variability and multiple spectral components exhibited by SXT observations of nearby Seyfert 1 galaxies show excellent promise to probe accretion disks and central engines in AGN through multi-band variability and spectroscopy.Keywords
Active Galactic Nuclei, Stars, Supernova Remnants, X-Ray Astronomy.References
- Singh, K. P. et al., AstroSat Mission. Proc. SPIE, 9144, Space Telescopes and Instrumentation 2014: UV to Gamma Ray, at Montreal; doi:10.1117/12.2062667 (2014).
- Wolter, H., Grazing incidence mirror systems as imaging optics for X-rays. Ann. Phys., 1952, 10, 94; 286.
- Singh, K. P. et al., In-orbit performance of SXT aboard AstroSat. Proc. SPIE, 2016, 9905, 99051E.
- Singh, K. P. et al., Soft X-ray focusing telescope aboard AstroSat: design, characteristics and performance. J. Astrophys. Astron., 2017, 38, 29.
- Decourchelle, A. et al., XMM-Newton observation of the Tycho supernova remnant. A&A, 2001, 365, L218.
- Lalitha, S. and Schmitt, J. H. M. M., X-ray activity cycle on the active ultra-fast rotator AB Doradus A? Implication of corrected coronal and photometric variability. A&A, 2013, 559, A119.