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80 papers · 1 filter
Equipartition of energy in the horizon degrees of freedom and the emergence of gravity
T. Padmanabhan
It is possible to provide a physical interpretation for the field equations of gravity based on a thermodynamical perspective. The virtual degrees of freedom associated with the ho…
Quasars probing intermediate redshift star-forming galaxies
P. Noterdaeme, R. Srianand, V. Mohan
We present a sample of 46 [OIII]-emitting galaxies at z<0.8 detected in the fibre spectra of quasars from the SDSS-DR7 through an automatic search procedure. We also detect [OII] a…
Bipolar Harmonic encoding of CMB correlation patterns
Nidhi Joshi, Sanjay Jhingan, Tarun Souradeep +1
Deviations from statistical isotropy can be modeled in various ways, for instance, anisotropic cosmological models (Bianchi models), compact topologies and presence of primordial m…
Features in the primordial power spectrum? A frequentist analysis
Jan Hamann, Arman Shafieloo, Tarun Souradeep
Features in the primordial power spectrum have been suggested as an explanation for glitches in the angular power spectrum of temperature anisotropies measured by the WMAP satellit…
A Physical Interpretation of Gravitational Field Equations
T. Padmanabhan
It is possible to provide a thermodynamic interpretation for the field equations in any diffeomorphism invariant theory of gravity. This insight, in turn, leads us to the possibili…
Primordial magnetic fields and the HI signal from the epoch of reionization
Shiv K. Sethi, Kandaswamy Subramanian
The implication of primordial magnetic-field-induced structure formation for the HI signal from the epoch of reionization is studied. Using semi-analytic models, we compute both th…