Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Singam S. Panini"'
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
Soft X-ray spectroscopy of the Sun is an important tool to understand the coronal dynamics and composition. The solar coronal X-ray spectrum below 1 keV is the least explored with high-resolution spectroscopy. Recent observations with Hinode XRT usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30f72b0b5b249d88cad10c53094ddebf
https://www.frontiersin.org/articles/10.3389/fspas.2021.647828/full
https://www.frontiersin.org/articles/10.3389/fspas.2021.647828/full
Autor:
Shyama Narendranath, K. Sankarasubramanian, Singam S. Panini, Juhani Huovelin, P. Sreekumar, Netra S. Pillai
Elemental abundances in the solar corona are known to be different from those observed in the solar photosphere. The ratio of coronal to photospheric abundance shows a dependence on the first ionisation potential (FIP) of the element. We estimate FIP
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08c1c943d6dc21c88656dd3c31bb1788
Autor:
Maheswar Nayak, Singam S. Panini, M. K. Tiwari, P. C. Pradhan, G. S. Lodha, K. C. Shyama Narendranath, P. S. Athiray, P. Sreekumar
Publikováno v:
Journal of Optics. 47:91-95
X-ray reflectivity of single layer coated X-ray mirror is confined to small grazing angles (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bd540981722136c5d56761f7dc3dd91
https://doi.org/10.1007/s12596-017-0444-8
https://doi.org/10.1007/s12596-017-0444-8
Autor:
Vinita Navalkar, Santosh V. Vadawale, Shiv Kumar Goyal, N. P. S. Mithun, R. B. Upadhyay, Singam S. Panini, Chiranjit Karmakar, C. S. Vaishnava, Neeraj Kumar Tiwari, Mansukhlal R. Patel, Biswajit Mondal
Publikováno v:
Astronomy and Computing. 34:100446
Multilayer X-ray mirrors consist of a coating of a large number of alternate layers of high Z and low Z materials with a typical thickness of 10-100 Angstrom, on a suitable substrate. Such coatings play an important role in enhancing the reflectivity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3298dd31e0584220c737f7d82347d0ef
https://doi.org/10.1016/j.ascom.2020.100446
https://doi.org/10.1016/j.ascom.2020.100446
Autor:
Maheswar Nayak, P. S. Athiray, Herman L. Marshall, P. Sreekumar, Shyama Narendranath, Singam S. Panini
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems. 4:1
A simple design of a soft x-ray polarimeter using multilayer mirrors is presented. A multilayer mirror acts as a linear polarization analyzer for x-rays at incidence angles close to the Brewster angle. The instrument consists of an x-ray concentrator
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6899a78a6f535e21b9626e9ce211b3a
https://doi.org/10.1117/1.jatis.4.1.011002
https://doi.org/10.1117/1.jatis.4.1.011002