Zobrazeno 1 - 10
of 735
pro vyhledávání: '"Ravikumar, C."'
The curvature in blazar spectrum has the potential to understand the particle dynamics in jets. We performed a detailed analysis of simultaneous Swift-XRT (0.3-10 keV) and NuSTAR (3-79 keV)} observations of Mkn 421. Our analysis of NuSTAR observation
Externí odkaz:
http://arxiv.org/abs/2404.15171
The blazar 4C 31.03 recently underwent a major gamma-ray outburst at the beginning of 2023 after a prolonged quiescent phase. Fermi-LAT reported a daily average flux of 5x10^-6 phs cm^-2 s^-1, which is about 60 times its average value. We investigate
Externí odkaz:
http://arxiv.org/abs/2404.09137
The long term broadband spectral study of Flat Spectrum Radio Quasars during different flux states has the potential to infer the emission mechanisms and the cause of spectral variations. To scrutinize this, we performed a detailed broadband spectral
Externí odkaz:
http://arxiv.org/abs/2310.06819
Autor:
Sruthi, K., Ravikumar, C. D.
We present analysis of 63 nearby ($<$ 44 Mpc) early-type galaxies hosting nuclear star clusters using the recently discovered parameter Central Intensity Ratio (CIR$_I$) determined from near-infra-red (3.6 $\mu$m) observations with the Infra-red-arra
Externí odkaz:
http://arxiv.org/abs/2302.12687
We use the recently discovered simple photometric parameter Central Intensity Ratio (CIR, Aswathy & Ravikumar 2018) determined for a sample of 57 nearby (z < 0.02) Seyfert galaxies to explore the central features of galaxies and their possible connec
Externí odkaz:
http://arxiv.org/abs/2302.11897
The radiative loss interpretation for the broken power-law spectra of blazars is often questioned since the difference between the indices does not support this inference. Using the blazar Mkn 421 as a case study, we performed a detailed analysis of
Externí odkaz:
http://arxiv.org/abs/2206.00659
Autor:
Bushramol, S., Ravikumar, C.
Publikováno v:
In Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 15 January 2025 325
Autor:
Dashputra, Anushka, Therkar, Yashasvi, Balpande, Atharva, Khanwani, Nikhil, Wasewar, Aryan, Patil, Ganesh C., Kuthe, Abhaykumar M., Tripathi, Satyendra Chandra, Deshpande, Shilpa, Kannaiyan, Surendar, Ravikumar, C.
Publikováno v:
In Journal of Molecular Liquids 15 November 2024 414 Part B
The convex (concave upward) high-energy X-ray spectra of the blazar PKS\,2155-304, observed by \emph{XMM-Newton}, is interpreted as the signature of sub-dominant inverse Compton emission. The spectra can be well fitted by a superposition of two power
Externí odkaz:
http://arxiv.org/abs/2107.04534
Publikováno v:
In Journal of Molecular Structure 15 April 2024 1302