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3 papers
Axion-Photon Conversion In Magnetized Universe: Impact On The Global 21-cm Signal
Pravin Kumar Natwariya, Vivekanand Mohapatra, Hriditi Howlader
The reported anomalous global 21-cm signal from the cosmic dawn era by Experiment to Detect the Global Epoch of Reionisation Signature (EDGES) could hint towards new phy…
Bounds on decaying sterile neutrinos via magnetic dipole moment from COB intensity
Hriditi Howlader, Vivekanand Mohapatra, Alekha C. Nayak +1
A recent observation by Long Range Reconnaissance Imager (LORRI) mounted on NASA's New Horizons yielded the most accurate measurement of the cosmic optical background (COB). The re…
Geometric optics analysis in Lorentz violating Chern-Simons electrodynamics
Arpan Das, Hriditi Howlader, Alekha C. Nayak
We study the geometric optics limit of the electrodynamics in the presence of Lorentz violating Chern-Simons term in (3+1) dimensions. The Chern-Simons term couples the dual electr…