Zobrazeno 1 - 10
of 187
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:
Universe, Vol 9, Iss 9, p 401 (2023)
It has been suggested that primordial planets could have formed in the early universe and the missing baryons in the universe could be explained by primordial free-floating planets of solid hydrogen. Many such planets were recently discovered around
Externí odkaz:
https://doaj.org/article/48d4c444e47841489781f311982fc930
Publikováno v:
Physical Sciences Forum, Vol 7, Iss 1, p 24 (2023)
Black Holes are not expected to form in the mass range of 60 M⊙ to 130 M⊙ because of the Pair-Instability Supernova (PISN). However, the recent observational evidence of GW190521 does not comply with the existing theory. Here, we have looked into
Externí odkaz:
https://doaj.org/article/60ffdb86fa6f433c9eeefcf36adef94f
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:
Physical Sciences Forum, Vol 7, Iss 1, p 11 (2023)
It is well established from various pieces of observational evidence that the relative abundance of baryonic matter in the Universe is less than 5%. The remaining 95% is made up of dark matter (DM) and dark energy. In view of the negative results fro
Externí odkaz:
https://doaj.org/article/dd7a53754de840c58457f6b71607b745
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