Zobrazeno 1 - 10
of 649
pro vyhledávání: '"Sivaram, C."'
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
In 2016, a star KIC 8462852 caught the world's attention due to a paper by citizen scientists who noticed its seemingly unexplainable brightness variations. The forward theory was offered - KIC 8462852 is surrounded by a Dyson sphere, a megastructure
Externí odkaz:
http://arxiv.org/abs/2309.06562
The presence of dark matter, though well established by indirect evidence, is yet to be observed directly. Various dark matter detection experiments running for several years have yielded no positive results. In view of these negative results, we had
Externí odkaz:
http://arxiv.org/abs/2205.12793
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
There are at least two ways to deduce Einstein's field equations from the principle of maximum force $c^4/4G$ or from the equivalent principle of maximum power $c^5/4G$. Tests in gravitational wave astronomy, cosmology, and numerical gravitation conf
Externí odkaz:
http://arxiv.org/abs/2205.06302
Dark matter (DM) which constitutes five-sixths of all matter is hypothesised to be a weakly interacting non-baryonic particle, created in the early stages of cosmic evolution. It can affect various cosmic structures in the Universe via gravitational
Externí odkaz:
http://arxiv.org/abs/2009.04302
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
The standard model for the formation of structure assumes that there existed small fluctuations in the early universe that grew due to gravitational instability. The origins of these fluctuations are as yet unclear. In this work we propose the role o
Externí odkaz:
http://arxiv.org/abs/1902.01815
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