output
19922026
most citedNeutrino Masses and Leptogenesis with Heavy Higgs Triplets

518 citations

Showing 2023 · astro-ph.HEShow all

5 papers · 2 filters

astro-ph.HE2023★ 11 cited

Coronal Properties of Low-Accreting AGNs using Swift, XMM-Newton and NuSTAR Observations

Arghajit Jana, Arka Chatterjee, Hsiang-Kuang Chang +6

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 rang…

astro-ph.HE2023★ 12 cited

The X-ray corona in the black-hole binary GRO J1655--40 from the properties of non-harmonically related quasi-periodic oscillations

Sandeep K. Rout, Mariano Mendez, Federico Garcia

The study of quasi periodic oscillations (QPOs) plays a vital role in understanding the nature and geometry of the Comptonizing medium around black-hole X-ray binaries. The spectra…

astro-ph.HE2023★ 16 cited

High hard X-ray polarization in Cygnus X-1 confined to the intermediate hard state: evidence for a variable jet component

Tanmoy Chattopadhyay, Abhay Kumar, A. R. Rao +7

Cygnus X-1, the well-known accreting black hole system, exhibits several observational features hinting at an intricate interplay between the accretion disk, its atmosphere known a…

astro-ph.HE2023★ 8 cited

Investigation of a small X-ray flaring event in NLS1 galaxy NGC 4051

Neeraj Kumari, Arghajit Jana, Sachindra Naik +1

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 NuST…

astro-ph.HE2023★ 14 cited

On the cyclotron absorption line and evidence of the spectral transition in SMC X-2 during 2022 giant outburst

G. K. Jaisawal, G. Vasilopoulos, S. Naik +7

We report comprehensive spectral and temporal properties of the Be/X-ray binary pulsar SMC X-2 using X-ray observations during the 2015 and 2022 outbursts. The pulse profile of the…