Zobrazeno 1 - 10
of 501
pro vyhledávání: '"Kumar, Nagendra"'
Autor:
Kumar, Nagendra
High energies emissions observed in X-ray binaries (XRBs), active galactic nuclei (AGNs) are linearly polarized. The prominent mechanism for X-ray is the Comptonization process. We revisit the theory for polarization in Compton scattering with unpola
Externí odkaz:
http://arxiv.org/abs/2307.08023
In this paper, we consider a dual-hop mixed THz-RF system model for backhaul-fronthaul applications where the link between source and destination is established only through the relay node in which decode-and-forward relaying protocol is used. The TH
Externí odkaz:
http://arxiv.org/abs/2304.10504
Autor:
Banerjee, Anuvab, Negi, Vibhore, Joshi, Ravi, Kumar, Nagendra, Wiita, Paul J., Chand, Hum, Rawat, Nikita, Wu, Xue-Bing, Ho, Luis C.
We investigate the possible presence of quasi-periodic oscillation (QPO) signals in 2103 blazars from the Zwicky Transient Facility (ZTF) time-domain survey. We detect a low-frequency QPO signal in five blazars observed over these 3.8-year-long optic
Externí odkaz:
http://arxiv.org/abs/2210.07266
Autor:
Sahoo, Suryanarayan, Kumar, Nagendra
Publikováno v:
In Physical Communication June 2024 64
Autor:
Raghaw, Chandravardhan Singh, Sharma, Arnav, Bansal, Shubhi, Rehman, Mohammad Zia Ur, Kumar, Nagendra
Publikováno v:
In Computers in Biology and Medicine September 2024 179
Autor:
Dixit, Rajashree, Vrinda Devi, K.V., Biju, K., Kumar, Nagendra, Hinge, A.K., Vetal, Hema, Mukhopadhyay, S.
Publikováno v:
In Applied Radiation and Isotopes September 2024 211
Many astrophysical sources, e.g., cataclysmic variables, X-ray binaries, active galactic nuclei, exhibit a wind outflow, when they reveal a multicolor blackbody spectrum, hence harboring a geometrically thin Keplerian accretion disk. Unlike an advect
Externí odkaz:
http://arxiv.org/abs/2106.06267
Autor:
Kumar, Nagendra, Kushwaha, Pankaj
Blazars host the most powerful persistent relativistic conical jet -- a highly collimated anisotropic flow of material/plasma. Motivated by this, we explore the blazar's broadband spectral energy distribution (SED) in an anisotropic flow of plasma wh
Externí odkaz:
http://arxiv.org/abs/2106.06263
Autor:
Kumar, Nagendra, Karmakar, Sujit
Publikováno v:
In International Journal of Hydrogen Energy 15 February 2024 55:400-413
Publikováno v:
In Expert Systems With Applications February 2024 236