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astro-ph.HE2025
TeV spectral bump of cosmic-ray protons and helium nuclei: the role of nearby supernova remnants
Sourav Bhadra, Satyendra Thoudam, Biman B Nath +1
The existence of nearby discrete cosmic-ray sources can lead to many interesting effects on the observed properties of cosmic rays. Recent measurements of cosmic rays with the CALE…
astro-ph.HE2024
Breaking into the window of primordial black hole dark matter with x-ray microlensing
Manish Tamta, Nirmal Raj, Prateek Sharma
Primordial black holes (PBHs) in the mass range may constitute all the dark matter. We show that gravitational microlensing of bright x-ray pulsars prov…
astro-ph.HE2023
High-soft to low-hard state transition in black hole X-ray binaries with GRMHD simulations
I. K. Dihingia, Y. Mizuno, P. Sharma
To understand the decaying phase of outbursts in the black hole (BH) X-ray binaries (BH-XRBs), we performed very long general relativistic magneto-hydrodynamic (GRMHD) simulations…