Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Majumdar, Debasish"'
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 beyond traditional interacting dark energy (IDE) models, we propose a
Externí odkaz:
http://arxiv.org/abs/2411.13379
Autor:
Basu, Rupa, Bhattacharyya, Siddhartha, Sarkar, Anjan Kumar, Banerjee, Shibaji, Majumdar, Debasish
The strength of the HI signal originating from a distant galaxy at a cosmological distance is several orders of magnitude lower than the foreground and background noise and hence it is difficult to observe this signal at a given radio telescope. Howe
Externí odkaz:
http://arxiv.org/abs/2406.17896
We investigate an interacting quintessence dark energy - dark matter scenario and its impact on structure formation by analyzing the evolution of scalar perturbations. The interaction is introduced by incorporating a non-zero source term into the con
Externí odkaz:
http://arxiv.org/abs/2402.18882
Determination of neutrino mass ordering and precision measurement of neutrino oscillation parameters are the foremost goals of the JUNO experiment. Here, we explore the effects of scalar non-standard interactions (sNSI) on the electron neutrino survi
Externí odkaz:
http://arxiv.org/abs/2306.07343
The self-interacting dark matter can affect various cosmological processes. Such interactions can be number conserving (\emph{e.g.} $2 \rightarrow 2$) or number violating (\emph{e.g.} $3 \rightarrow 2,\,4 \rightarrow 2$ etc.). The latter processes wh
Externí odkaz:
http://arxiv.org/abs/2304.06680
Publikováno v:
Mod. Phys. Lett. A 37, 2250233 (2022)
The Weakly Interacting Massive Particles (WIMPs) so far remain one of the most popular candidates for dark matter. If captured gravitationally inside the core of the Sun, these WIMPs may produce high energy neutrinos as the end product in case they u
Externí odkaz:
http://arxiv.org/abs/2203.13697
Publikováno v:
JCAP 10, 099 (2022)
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 signal originated from the neutral Hydrogen atoms. In this work, we have
Externí odkaz:
http://arxiv.org/abs/2203.13008
The evaporations of Primordial Black Holes (PBH) (via Hawking radiation) can produce electrons/positrons ($e^-/e^+$) in the Galactic Centre (GC) region which under the influence of the magnetic field of Centre region can emit synchrotron radiation. T
Externí odkaz:
http://arxiv.org/abs/2109.14955
Publikováno v:
JCAP 10, 033 (2021)
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 leptons or $\gamma$ as end products. Although these could be rare decays, t
Externí odkaz:
http://arxiv.org/abs/2105.14356