2 papers
astro-ph.CO2025
Constraining the Hubble parameter with the 21 cm brightness temperature signal in a universe with inhomogeneities
Subhadeep Mukherjee, Shashank Shekhar Pandey, A. S. Majumdar
We consider the 21\,cm brightness temperature as a probe of the Hubble tension in the framework of an inhomogeneous cosmological model. Employing Buchert's averaging formalism to s…
astro-ph.CO2019
Stochastic gravitational wave background from accreting primordial black hole binaries during early inspiral stage
Arnab Sarkar, K. Rajesh Nayak, A. S. Majumdar
We investigate the stochastic gravitational wave background produced by primordial black hole binaries during their early inspiral stage while accreting high-density radiation surr…