Zobrazeno 1 - 10
of 352
pro vyhledávání: '"SESHADRI, T. R."'
We analyze the volume-limited subsamples extracted from the sixteenth data release of the SDSS-IV eBOSS quasar survey spanning a redshift interval of $0.8 < z < 2.2$, to estimate the scale of transition to homogeneity in the Universe. The multi-fract
Externí odkaz:
http://arxiv.org/abs/2404.09197
We present here timing and spectral analyses of SGR J1830$-$0645 based on an AstroSat observation carried out on 2020 October 16, about a week after the onset of its first detected X-ray outburst. Using data taken with the Soft X-ray Telescope (SXT)
Externí odkaz:
http://arxiv.org/abs/2310.04079
Publikováno v:
Int.J.Mod.Phys.D 33 (2024) 2450006
Cosmological models with inflation and those with bounce have their own strengths and weaknesses. Here we construct a model in which a phase of bounce is followed by a viable inflationary phase. This incorporates several advantages of both and hence,
Externí odkaz:
http://arxiv.org/abs/2302.13698
Molecular clouds are sites of star formation. Magnetic fields are believed to play an important role in their dynamics and shaping morphology. We aim to study any possible correlation that might exist between the magnetic fields orientation inside th
Externí odkaz:
http://arxiv.org/abs/2209.01509
Autor:
Bagla, Jasjeet Singh, Bhattacharya, Krishnakanta, Chakraborty, Sumanta, Engineer, Sunu, Faraoni, Valerio, Kolekar, Sanved, Kothawala, Dawood, Lochan, Kinjalk, Modak, Sujoy, Nair, V. Parameswaran, Paranjape, Aseem, Parattu, Krishnamohan, Rajeev, Sarada G., Majhi, Bibhas Ranjan, Choudhury, Tirthankar Roy, Sami, Mohammad, Sarkar, Sudipta, Sengupta, Sandipan, Seshadri, T. R., Shankaranarayanan, S., Singh, Suprit, Singh, Tejinder P., Sriramkumar, L., Yajnik, Urjit
Thanu Padmanabhan was a renowned Indian theoretical physicist known for his research in general relativity, cosmology, and quantum gravity. In an extraordinary career spanning forty-two years, he published more than three hundred research articles, w
Externí odkaz:
http://arxiv.org/abs/2110.03208
Astrophysical magnetic fields decay primarily via two processes namely, ambipolar diffusion and turbulence. Constraints on the strength and the spectral index of non-helical magnetic fields have been derived earlier in the literature through the effe
Externí odkaz:
http://arxiv.org/abs/2010.08836
Implications of baryon-dark matter interaction on IGM temperature and tSZ effect with magnetic field
We show that the combined effect of cosmic magnetic field and a possible non-standard interaction between baryons and dark matter has interesting consequences on the thermal Sunyaev$-$Zel${'}$dovich (tSZ) effect depending on the temperature and the i
Externí odkaz:
http://arxiv.org/abs/2006.07901
Publikováno v:
Phys. Rev. D 101, 103526 (2020)
Generation of magnetic fields during inflation is a promising mechanism for the origin of the observed large scale magnetic fields in the universe. Among several attempts, a popular model is one where the inflaton and the electromagnetic field are co
Externí odkaz:
http://arxiv.org/abs/1912.12089
Magnetic fields have been observed in galaxy clusters with strengths of the order of $\sim \mu$G. The non-thermal pressure exerted by magnetic fields also contributes to the total pressure in galaxy clusters and can in turn affect the estimates of th
Externí odkaz:
http://arxiv.org/abs/1909.07847
Publikováno v:
International Journal of Modern Physics D Vol. 29, No. 3 (2020) 2050029
We study the possibility of reheating the universe in its early stages through the evaporation of Primordial Black Holes (PBHs) that are formed due to the collapse of the inhomogeneities that were generated during inflation. By using the current resu
Externí odkaz:
http://arxiv.org/abs/1805.10859