Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Arun Kenath"'
Autor:
MV, Pradosh Keshav, Arun, Kenath
Publikováno v:
International Journal of Theoretical Physics, Volume 63, Article Number 265, 2024
Alternative dark energy models were proposed to address the limitation of the standard concordance model. Though different phenomenological considerations of such models are widely studied, scenarios where they interact with each other remain unexplo
Externí odkaz:
http://arxiv.org/abs/2410.12887
Publikováno v:
Modern Physics Letters A, 2450073, 2024
The estimation of the Hubble constant in the past few decades has increasingly become more accurate with the advance of new techniques. But its value seems to depend on the epoch at which the measurements are made. The Planck estimate of the Hubble c
Externí odkaz:
http://arxiv.org/abs/2407.18975
Publikováno v:
Indian Journal of Physics, vol. 96, pp. 1289-1292, 2022
Recently much controversy has been raised about the cosmological conundrum involving the discrepancy in the value of the Hubble constant as implied by Planck satellite observations of the CMBR in the early Universe and that deduced from other distanc
Externí odkaz:
http://arxiv.org/abs/2205.14010
Publikováno v:
Advances in Space Research, vol. 68, pp. 2050-2056, 2021
In a recent paper we had discussed possibility of DM at high redshifts forming primordial planets composed entirely of DM to be one of the reasons for not detecting DM (as the flux of ambient DM particles would be consequently reduced). In this paper
Externí odkaz:
http://arxiv.org/abs/2205.13386
Observations have indicated that we do not see neutron stars (NS) of mass near the theoretical upper limit as predicted. Here we invoke the role of dark matter (DM) particles in star formation, and their role in lowering the mass of remnants eventual
Externí odkaz:
http://arxiv.org/abs/1902.08618
Publikováno v:
Astrophysics and Space Science (2018) 363:149
The requirement that their gravitational binding self-energy density must at least equal the background repulsive dark energy density for large scale cosmic structures implies a mass-radius relation of M/R^2 ~ 1g/cm^2, as pointed out earlier. This re
Externí odkaz:
http://arxiv.org/abs/1806.07706
One of the unresolved questions currently in cosmology is that of the non-linear accelerated expansion of the universe. This has been attributed to the so called Dark Energy (DE). The accelerated expansion of the universe is deduced from measurements
Externí odkaz:
http://arxiv.org/abs/1708.09269
Publikováno v:
International Journal of Astrobiology, 2017
The 21 cm hydrogen line is considered a favourable frequency by the SETI programme in their search for signals from potential extra-terrestrial civilizations. The Pioneer plaque, attached to the Pioneer 10 and Pioneer 11 spacecraft, portrays the hype
Externí odkaz:
http://arxiv.org/abs/1707.09259
Publikováno v:
Advances in Space Research, 60, 166 -186, 2017
The nature of dark matter (DM) and dark energy (DE) which is supposed to constitute about 95% of the energy density of the universe is still a mystery. There is no shortage of ideas regarding the nature of both. While some candidates for DM are clear
Externí odkaz:
http://arxiv.org/abs/1704.06155