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Soft X-Ray Focusing Telescope Aboard Astrosat:Early Results


Affiliations
1 Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India
2 Inter-University Centre for Astronomy and Astrophysics, Pune 411 007, India
3 Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom
4 Technical University of Denmark, National Space Institute, Denmark
 

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.
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  • 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.


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  • Soft X-Ray Focusing Telescope Aboard Astrosat:Early Results

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Authors

K. P. Singh
Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India
G. C. Dewangan
Inter-University Centre for Astronomy and Astrophysics, Pune 411 007, India
S. Chandra
Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India
S. Bhattacharayya
Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India
V. Chitnis
Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India
G. C. Stewart
Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom
N. J. Westergaard
Technical University of Denmark, National Space Institute, Denmark

Abstract


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





DOI: https://doi.org/10.18520/cs%2Fv113%2Fi04%2F587-590