activity
20112025
most citedDepth of Maximum of Air-Shower Profiles at the Pierre Auger Observatory: Composition Implications

309 citations · 3.3k across the 62 of their papers we have counts for

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40 papers · 1 filter

astro-ph.HE2025

Deterministic and Stochastic Study of the X-ray Emission from the TeV Blazar Mrk~421

Radim Pánis, Gopal Bhatta, Tek P. Adhikari +6

We present a comprehensive timing analysis of X-ray data from the {\it XMM-Newton} satellite, examining 50 light curves covering 17 years of observations of the blazar Mrk~421. Thi…

astro-ph.HE2025

Search for High Energy Neutrino Sources using IceCube Neutrino Events and \textit{Fermi}/LAT Observations

Rajendra Neupane, Niraj Dhital

Context. The sources of high-energy astrophysical neutrinos remain largely unknown. Multi-wavelength observational campaignshave identified a few plausible candidates, but their nu…

astro-ph.HE2024

Probing X-ray Timing and Spectral Variability in the Blazar PKS 2155-304 Over a Decade of XMM-Newton Observations

Gopal Bhatta, Suvas C. Chaudhary, Niraj Dhital +5

Blazars, a class of active galactic nuclei (AGN) powered by supermassive black holes, are known for their remarkable variability across multiple timescales and wavelengths. Despite…

astro-ph.HE2023

Simulation of the isotropic ultra-high energy photons flux in the solar magnetic field and a comparison with observations made by the HAWC and Fermi-LAT observatories

David Alvarez-Castillo, Piotr Homola, Bożena Poncyljusz +37

In this contribution we study the possibility of the formation of cosmic ray ensembles (CRE) created by the interaction of ultra-high energy (UHE) photons with the magnetic field o…

astro-ph.HE2023

Constraining X-ray variability of the blazar 3C 273 using XMM-Newton observations over two decades

Adithiya Dinesh, Gopal Bhatta, Tek P. Adhikari +5

Blazars exhibit relentless variability across diverse spatial and temporal frequencies. The study of long- and short-term variability properties observed in the X-ray band provides…

astro-ph.HE2022★ 4 cited

Simulation of the isotropic ultra-high energy photons flux in the solar magnetic field

Bożena Poncyljusz, Tomasz Bulik, Niraj Dhital +17

Both the lack of observation of ultra-high energy (UHE) photons and the limitations of the state-of-the-art methodology being applied for their identification motivate studies on a…