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- Indian Institute of Technology GandhinagarIN282 papers
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- Centre National de la Recherche ScientifiqueFR100 papers
- Indian Institute of AstrophysicsIN92 papers
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- Aryabhatta Research Institute of Observational SciencesIN66 papers
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5 papers · 2 filters
Large peculiar motion of the solar system from the dipole anisotropy in sky brightness due to distant radio sources
Ashok K. Singal
According to the cosmological principle, the Universe should appear isotropic, without any preferred directions, to an observer whom we may consider to be fixed in the co-moving co…
Deep GMRT 150 MHz observations of the DEEP2 fields: Searching for High Red-shift Radio Galaxies Revisited
Susanta Kumar Bisoi, C. H. Ishwara-Chandra, S. K. Sirothia +1
High red-shift radio galaxies are best searched at low radio frequencies, due to its steep radio spectra. Here we present preliminary results from our programme to search for high…
Cosmological Implications of Unimodular Gravity
Pankaj Jain, Atul Jaiswal, Purnendu Karmakar +2
We consider a model of gravity and matter fields which is invariant only under unimodular general coordinate transformations (GCT). The determinant of the metric is treated as a se…
Lorentz invariant dark-spinor and inflation
Abhishek Basak, Jitesh R. Bhatt
We investigate the possibility of the inflation driven by a Lorentz invariant non-standard spinor field. As these spinors are having dominant interaction via gravitational field on…
Optical Intraday Variability Studies of Ten Low Energy Peaked Blazars
Bindu Rani, Alok C. Gupta, U. C. Joshi +2
We have carried out optical (R band) intraday variability (IDV) monitoring of a sample of ten bright low energy peaked blazars (LBLs). Forty photometric observations, of an average…