Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Pankaj Kushwaha"'
Autor:
Alok C. Gupta, Pankaj Kushwaha, Mauri J. Valtonen, Sergey S. Savchenko, Svetlana G. Jorstad, Ryo Imazawa, Paul J. Wiita, Minfeng Gu, Alan P. Marscher, Zhongli Zhang, Rumen Bachev, G. A. Borman, Haritma Gaur, T. S. Grishina, V. A. Hagen-Thorn, E. N. Kopatskaya, V. M. Larionov, E. G. Larionova, L. V. Larionova, D. A. Morozova, T. Nakaoka, A. Strigachev, Yulia V. Troitskaya, I. S. Troitsky, M. Uemura, A. A. Vasilyev, Z. R. Weaver, A. V. Zhovtan
Publikováno v:
The Astrophysical Journal Letters, Vol 957, Iss 1, p L11 (2023)
We study the optical flux and polarization variability of the binary black hole blazar OJ 287 using quasi-simultaneous observations from 2015 to 2023 carried out using telescopes in the USA, Japan, Russia, Crimea, and Bulgaria. This is one of the mos
Externí odkaz:
https://doaj.org/article/4386a01033bb441a9e21f8c1d6df1ce8
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 173 (2023)
The continuous monitoring capability of Fermi-LAT has enabled the exploration of quasiperiodic oscillations (QPOs) in the γ -ray light curve of blazars that has given a new perspective to probe these sources over a wide range of timescales. We repor
Externí odkaz:
https://doaj.org/article/db1657f098224cf88a16a5a80ed1f5f4
Autor:
Q. Yuan, Pankaj Kushwaha, Alok C. Gupta, Ashutosh Tripathi, Paul J. Wiita, M. Zhang, X. Liu, Anne Lähteenmäki, Merja Tornikoski, Joni Tammi, Venkatessh Ramakrishnan, L. Cui, X. Wang, M. F. Gu, Cosimo Bambi, A. E. Volvach
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 47 (2023)
We perform correlation and periodicity search analyses on long-term multiband light curves of the flat-spectrum radio quasar PKS 1510−089 observed by the space-based Fermi-Large Area Telescope in γ -rays, the SMARTS and Steward Observatory telesco
Externí odkaz:
https://doaj.org/article/6ec1d940f76b469ebc9c7ef4a6c99f70
Autor:
Pankaj Kushwaha, Main Pal
Publikováno v:
Galaxies, Vol 8, Iss 3, p 66 (2020)
We explored the statistical properties of short-term X-ray variability using long-exposure XMM-Newton data during high X-ray variability phases of blazars S5 0716+714 and PKS 2155-304. In general, the hardness ratio shows correlated variations with t
Externí odkaz:
https://doaj.org/article/4155850cd74e42048a96a281f4c3055d
Autor:
Pankaj Kushwaha
Publikováno v:
Galaxies, Vol 8, Iss 1, p 15 (2020)
A diverse range of observational results and peculiar properties across the domains of observation have made OJ 287 one of the best-explored BL Lac objects on the issues of relativistic jets and accretion physics as well as the strong theory of gravi
Externí odkaz:
https://doaj.org/article/7d9e4a8a38304b4d8e661bc34802ca6a
Intra-night optical flux and polarization variability of BL Lacertae during its 2020–2021 high state
Autor:
Rumen Bachev, Tushar Tripathi, Alok C Gupta, Pankaj Kushwaha, Anton Strigachev, Alexander Kurtenkov, Yanko Nikolov, Svetlana Boeva, Goran Damljanovic, Oliver Vince, Milan Stojanovic, Shubham Kishore, Haritma Gaur, Vinit Dhiman, Junhui Fan, Nibedita Kalita, Borislav Spassov, Evgeni Semkov
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 522:3018-3035
In this work, we report the presence of rapid intra-night optical variations in both -- flux and polarization of the blazar BL Lacertae during its unprecedented 2020--2021 high state of brightness. The object showed significant flux variability and s
Publikováno v:
South Asian Journal of Experimental Biology. 13:20-32
The Aloe vera commonly known as Gwarpatha or Ghrit Kumari is considered as a universal panacea. It is a gifted plant for the health, beauty, medicinal and skincare industry. However, considering the multiple uses of it in other sectors also, it neede
Publikováno v:
South Asian Journal of Experimental Biology. 11:768-774
Chlorophytum borivilianum (Safed Musli), a member of the Liliaceae family is a well-known plant in India for its aphrodisiac and adaptogenic activities. The present study was carried out to identify the novel compounds based new medicinal properties
Autor:
Lt. Col Pankaj Kushwaha
Publikováno v:
International Journal for Research in Applied Science and Engineering Technology. 9:3009-3021
Li-ion battery technology has become very important in recent years as these batteries show great promise as power source. They power most of today’s portable devices and seem to overcome the psychological barriers against the use of such high ener
Autor:
Alok C. Gupta, Pankaj Kushwaha, L. Carrasco, Haiguang Xu, Paul J. Wiita, G. Escobedo, A. Porras, E. Recillas, Y. D. Mayya, V. Chavushyan, Beatriz Villarroel, Zhongli Zhang
We present the most extensive and well-sampled long-term multi-band near-infrared (NIR) temporal and spectral variability study of OJ 287, considered to be the best candidate binary supermassive black hole blazar. These observations were made between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a745ce89b547424c79e4d063dcc7d6dd
http://arxiv.org/abs/2205.03618
http://arxiv.org/abs/2205.03618