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- Manju Sudhakar
- Anuj Nandi
- M. C. Ramadevi
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- Arjun Dey
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Journals
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Sankarasubramanian, K.
- X-Ray Spectrometers On-Board Aditya-L1 for Solar Flare Studies
Abstract Views :213 |
PDF Views:66
Authors
K. Sankarasubramanian
1,
Manju Sudhakar
1,
Anuj Nandi
1,
M. C. Ramadevi
1,
Abhijit Avinash Adoni
1,
Ankur Kushwaha
1,
Anil Agarwal
1,
Arjun Dey
1,
Bhuwan Joshi
2,
Brajpal Singh
1,
V. Girish
1,
Ishan Tomar
1,
Kamal Kumar Majhi
1,
Kumar
1,
Manjunath Olekar
1,
Monoj Bug
1,
Manohar Pala
1,
Mukund Kumar Thakur
1,
Rajeev R. Badagandi
1,
B. T. Ravishankar
1,
Sarthak Garg
1,
N. Sitaramamurthy
1,
N. Sridhara
1,
C. N. Umapathy
1,
Vinod Kumar Gupta
1,
Vivek Kumar Agrawal
1,
B. Yougandar
1
Affiliations
1 ISITE Campus, ISRO Satellite Centre, Outer Ring Road, Marathahalli, Bengaluru 560 037, IN
2 Udaipur Solar Observatory, Physical Research Laboratory, Udaipur 313 004, IN
1 ISITE Campus, ISRO Satellite Centre, Outer Ring Road, Marathahalli, Bengaluru 560 037, IN
2 Udaipur Solar Observatory, Physical Research Laboratory, Udaipur 313 004, IN
Source
Current Science, Vol 113, No 04 (2017), Pagination: 625-627Abstract
Aditya-L1 mission will carry two high-spectral resolution X-ray spectrometers to study solar flares. The soft X-ray spectrometer will cover the energy range from 1 to 30 keV, while the hard X-ray spectrometer will cover from 10 to 150 keV. These two instruments together will provide opportunities to study the plasma parameters during solar flares as well as acceleration mechanisms of energetic particles during the flaring time.Keywords
Coronal Heating, Solar Flares, X-Ray Spectrometers.References
- Benz, A. O., Flare observations. Living Rev. Sol. Phys., 2017, 14(2), 1–59.
- Hannah, I. G. et al., Microflares and the statistics of X-ray flares. Space Sci. Rev., 2011, 159, 263–300.
- Narendranath, S. et al., Elemental abundances in the solar corona as measured by the X-ray solar monitor onboard Chandrayaan-1. Sol. Phys., 2014, 289, 1585–1595.
- Joshi, B. et al., Pre-flare activity and magnetic reconnection during the evolutionary stages of energy release in a solar eruptive flare. ApJ, 2011, 743, 195–208.
- Rao, A. R. et al., RT-2 detection of quasi-periodic pulsations in the 2009 July 5 solar hard X-ray flare. ApJ, 2010, 714, 1142–1148.
- Yashiro, S. et al., Spatial relationship between solar flares and coronal mass ejections. ApJ, 2008, 673, 1174–1180.
- Chifor, C. et al., The early phases of a solar prominence eruption and associated flare: a multi-wavelength analysis. A&A, 2006, 458, 965–973.
- Warmuth, A. et al., Rapid changes of electron acceleration characteristics at the end of the impulsive phase of an X-class solar flare. ApJ, 2009, 699, 917.
- SoLEXS Team, SoLEXS PDR document, ISRO-ISACADITYA-L1RR-1343, 2016.
- HEL1OS Team, HEL1OS PDR document, ISRO-ISAC-ADITYA-L1RR-1342, 2016.
- National Large Solar Telescope
Abstract Views :222 |
PDF Views:78
Authors
Affiliations
1 Indian Institute of Astrophysics, Bengaluru 560 034, IN
1 Indian Institute of Astrophysics, Bengaluru 560 034, IN
Source
Current Science, Vol 113, No 04 (2017), Pagination: 696-700Abstract
The National Large Solar Telescope (NLST) aims primarily to carry out observations of the solar atmosphere with high spatial, spectral and temporal resolution. A comprehensive site characterization programme, that commenced in 2007, has identified an excellent site in the Ladakh region at the Pangong lake, India. With an innovative optical design, NLST is an on-axis Gregorian telescope with a low number of optical elements to reduce the number of reflections and yield a high throughput with low polarization. In addition, it uses high-order adaptive optics to produce close to diffraction limited performance. To control atmospheric and thermal perturbations of the observations, the telescope will function with a fully open dome, to achieve its full potential atop a 25 m tower. The post-focus instruments include broadband and tuneable Fabry-Perot narrow band imaging instruments and a high-resolution spectropolarimeter.Keywords
Adaptive Optics, High Angular Resolution, Magnetic Fields, Solar Telescope.References
- Shelyag, S., Keys, P., Mathioudakis, M. and Keenan, F. P., Vorticity in the solar photosphere. Astron. Astrophys., 2011, 526(A5), 1–7.
- Hasan, S. S., Soltau, D., Kärcher, H., Süss, M. and Berkefeld, T., NLST – India’s National Large Solar Telescope. Astron. Nachr., 2010, 331, 628–635.
- Hasan, S. S., Indian National Large Solar Telescope. ASP Conf. Ser., 2012, 463, 395–403.
- Khomenko, E., Collados, M., Solanki, S. K., Lagg, A. and Trujillo Bueno, J., Quiet-Sun inter-network magnetic fields observed in the infrared. Astron. Astrophys., 2003, 408, 1115–1135.
- Solanki, S. K., Livingston, W. L. and Ayres, T., New light on the heart of darkness of the solar chromosphere. Science, 1994, 263, 64–66.
- Ravindra, B. and Banyal, B., A dual Fabry–Perot based narrow band imager for the National Large Solar Telescope. ASI Conf. Ser., 2011, 2, 47–53.
- Elmore, D. F. et al., The advanced stokes polarimeter – a new instrument for solar magnetic field research. SPIE, 1992, 1746, 22–23.
- Hasan, S. S., Bagare, S. P. and Rangarajan, K. E., Solar astronomy at high altitude. Proc. Indian Natl. Sci. Acad., 2014, 80, 815–825.