Zobrazeno 1 - 10
of 312
pro vyhledávání: '"Kumari, Neeraj"'
Publikováno v:
Bull. Soc. R. Sci. Liege, 2024, 93(2), 657-669
We present the findings from our study of the Be/X-ray binary 1A 0535+262/HD 245770 during the giant X-ray outburst in October 2020. We utilized the 1.2-m telescope at Mount Abu Infrared observatory for optical observations of the Be companion star.
Externí odkaz:
http://arxiv.org/abs/2407.14753
Autor:
Layek, Narendranath, Nandi, Prantik, Naik, Sachindra, Kumari, Neeraj, Jana, Arghajit, Chhotaray, Birendra
We present a long-term X-ray study of a nearby Active Galactic Nucleus Mrk 6, utilizing observations from XMM-Newton, Suzaku, Swift and NuSTAR observatories, spanning 22 years from 2001 to 2022. From timing analysis, we estimated variance, normalized
Externí odkaz:
http://arxiv.org/abs/2401.16780
Autor:
Chhotaray, Birendra, Jaisawal, Gaurava K., Nandi, Prantik, Naik, Sachindra, kumari, Neeraj, Ng, Mason, Gendreau, Keith C.
We present the results obtained from detailed X-ray timing and spectral studies of X-ray pulsar Swift J0243.6+6124 during its giant and normal X-ray outbursts between 2017 and 2023 observed by the Neutron star Interior Composition Explorer (NICER). W
Externí odkaz:
http://arxiv.org/abs/2401.15058
Autor:
Jana, Arghajit, Chatterjee, Arka, Chang, Hsiang-Kuang, Nandi, Prantik, K., Rubinur, Kumari, Neeraj, Naik, Sachindra, Safi-Harb, Samar, Ricci, Claudio
We studied the broadband X-ray spectra of {\it Swift}/BAT selected low-accreting AGNs using the observations from {\it XMM-Newton}, {\it Swift}, and {\it NuSTAR} in the energy range of $0.5-150$~keV. Our sample consists of 30 AGNs with Eddington rati
Externí odkaz:
http://arxiv.org/abs/2307.07966
We performed a detailed broadband spectral and timing analysis of a small flaring event of ~120 ks in a narrow-line Seyfert 1 galaxy NGC 4051 using simultaneous XMM-Newton and NuSTAR observations. The ~300 ks long NuSTAR observation and the overlappi
Externí odkaz:
http://arxiv.org/abs/2303.11799
Autor:
Chhotaray, Birendra, Jaisawal, Gaurava K., Kumari, Neeraj, Naik, Sachindra, Kumar, Vipin, Jana, Arghajit
We report results obtained from the optical and X-ray studies of the Be/X-ray binary 1A 0535+262/HD 245770 during the 2020 October giant X-ray outburst, using the 1.2 m telescope at Mount Abu Infrared observatory and AstroSat, respectively. The peak
Externí odkaz:
http://arxiv.org/abs/2211.09491
Autor:
Jana, Arghajit, Ricci, Claudio, Naik, Sachindra, Tanimoto, Atsushi, Kumari, Neeraj, Chang, Hsiang-Kuang, Nandi, Prantik, Chatterjee, Arka, Safi-Harb, Samar
We present a detailed study of the highly obscured active galaxy NGC 4507, performed using four Nuclear Spectroscopic Telescope Array (NuSTAR) observations carried out between May and August in 2015 (~ 130 ks in total). Using various phenomenological
Externí odkaz:
http://arxiv.org/abs/2203.10550
Autor:
Jana, Arghajit, Naik, Sachindra, Jaisawal, Gaurava K., Chhotaray, Birendra, Kumari, Neeraj, Gupta, Shivangi
We present the results obtained from broadband X-ray timing and spectral analysis of black hole candidate MAXI J1803-298 using an AstroSat observation on May 11-12, 2021. Four periodic absorption dips with a periodicity of $7.02 \pm 0.18$ hour are de
Externí odkaz:
http://arxiv.org/abs/2202.00479
Publikováno v:
In Chemical Physics Impact December 2024 9
We present the results obtained from timing and spectral studies of the highly obscured low luminosity active galactic nucleus NGC~4941 using data obtained from the {\it Nuclear Spectroscopic Telescope Array} and the {\it Neil Gehrels Swift} Observat
Externí odkaz:
http://arxiv.org/abs/2111.13508