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4 papers
Lensing contribution to the 21cm intensity bispectrum
Rahul Kothari, Roy Maartens
Intensity maps of the 21cm emission line of neutral hydrogen are lensed by intervening large-scale structure, similar to the lensing of the cosmic microwave background temperature…
Full-sky bispectrum in redshift space for 21cm intensity maps
Ruth Durrer, Mona Jalilvand, Rahul Kothari +2
We compute the tree-level bispectrum of 21cm intensity mapping after reionisation. We work in the directly observable angular and redshift space, focusing on equal-redshift correla…
B-Mode auto-bispectrum due to matter bounce
Rahul Kothari, Debottam Nandi
Primordial Gravitational waves leave polarization imprints on the Cosmic Microwave Background (CMB). In this article, we investigate polarization bispectrum, which is also referred…
Torsion driven Inflationary Magnetogenesis
M. V. S. Saketh, R. Kothari, P. Jain
We show that breaking of the conformal invariance of electromagnetic Lagrangian which is required for inflationary magnetogenesis arises naturally in the Poincar{é} Gauge Theory. W…