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hep-ph2026
Axion-Photon Conversion in Variable-Domain Magnetic Fields and the Highest-Energy Photons from GRB 221009A
Rick Sundar Garai, Tanmoy Kumar, Sourov Roy
We investigate photon-ALP conversion as a simultaneous explanation of the ultra-high-energy photons observed from GRB 221009A by LHAASO and of the TeV photon reported by…
hep-ph2024★ 2 cited
Signatures of Solar Chameleons in the Earth's Magnetic Field
Tanmoy Kumar, Sourov Roy
Chameleon dark energy models are a popular alternative to the standard cosmological constant model. These models consist of a new light degree of freedom, called chameleon, with a…
hep-ph2022★ 8 cited
Searching for relativistic axions in the sky
Arpan Kar, Tanmoy Kumar, Sourov Roy +1
Relativistic axions produced in decays of dark matter (DM) partially convert to photons after traversing the galactic magnetic field, gi…