38 citations · 133 across the 21 of their papers we have counts for
9 papers · 1 filter
Viscous Dark Energy and Mass-Varying Dark Matter in Lyra Manifold: Cosmological Dynamics and Observational Constraints
Giridhari Deogharia, Madhurima Pandey, Ashadul Halder
We investigate the cosmological dynamics of a universe described by Lyra's geometry in the presence of dark energy (DE) and dark matter (DM). Dark energy is modeled as a quintessen…
Exploring the effects of dark matter - dark energy interaction on cosmic evolution in viscous dark energy scenario
Ashadul Halder, Madhurima Pandey, Rupa Basu +1
We explore the influence of interactions between dark matter (DM) and dark energy (DE) on the cosmic evolution of the Universe within a viscous dark energy (VDE) framework. Moving…
Addressing the self-interaction for ELDER dark matter from the 21-cm signal
Rupa Basu, Debasish Majumdar, Ashadul Halder +1
The self-interacting dark matter can affect various cosmological processes. Such interactions can be number conserving (\emph{e.g.} ) or number violating (\emph{e.…
Global 21-cm brightness temperature in viscous dark energy models
Ashadul Halder, Shashank Shekhar Pandey, A. S. Majumdar
We investigate the global 21-cm brightness temperature in the context of viscous dark energy (VDE) models. The bulk viscosity of dark energy perturbs the Hubble evolution of the Un…
Constraining PBH mass distributions from 21cm brightness temperature results and an analytical mapping between probability distribution of 21cm signal and PBH masses
Upala Mukhopadhyay, Debasish Majumdar, Ashadul Halder
The evaporation of Primordial Black Hole (PBH) via Hawking radiation influences the evolution of Inter Galactic Medium by heating up the latter and consequently affects the 21cm si…
Exploring multimessenger signals from heavy dark matter decay with EDGES 21-cm result and IceCube
Ashadul Halder, Madhurima Pandey, Debasish Majumdar +1
The primordial heavy or superheavy dark matter that could be created during the reheating or preheating stage of the Universe can undergo QCD cascade decay process to produce lepto…
Bounds on abundance of primordial black hole and dark matter from EDGES 21-cm signal
Ashadul Halder, Shibaji Banerjee
The redshifted 21cm radio signal has emerged as an important probe for investigating the dynamics of the dark age Universe (recombination to reionization). In the current analysis,…
Probing the effects of primordial black holes on 21-cm EDGES signal along with interacting dark energy and dark matter - baryon scattering
Ashadul Halder, Madhurima Pandey
21-cm radio signal has emerged as an important probe in investigating the dark age of the Universe (recombination to reionization). In the current analysis, we explore the combined…
Addressing -ray emissions from dark matter annihilations in 45 milky way satellite galaxies and in extragalactic sources with particle dark matter models
Ashadul Halder, Shibaji Banerjee, Madhurima Pandey +1
The mass to luminosity ratio of the dwarf satellite galaxies in the Milky Way suggests that these dwarf galaxies may contain substantial dark matter. The dark matter at the dense r…