25 citations
- University of DelhiIN6 papers
- Deen Dayal Upadhyaya CollegeIN3 papers
- Deen Dayal Upadhyay HospitalIN3 papers
- St. Stephen's CollegeIN3 papers
- Universidade Federal de Campina GrandeBR2 papers
- Universidade Federal de SergipeBR2 papers
- Universidade Federal do Rio Grande do NorteBR2 papers
- Jadavpur UniversityIN1 paper
- National Centre for Radio AstrophysicsIN1 paper
- Tata Institute of Fundamental ResearchIN1 paper
- University of California, Santa CruzUS1 paper
- University of HyderabadIN1 paper
9 papers
Testing the Constancy of Type Ia Supernova Luminosities with Gaussian Process
Akshay Rana
Type Ia supernovae (SNe~Ia) are central to studies of cosmic expansion, under the assumption that their absolute magnitude does not evolve with redshift. Even small drifts in…
The effective speed of sound in cosmological perturbation theory
Sanil Unnikrishnan
In a multi-field/fluid cosmological system consisting of minimally coupled canonical scalar fields, non-canonical scalar fields, and barotropic perfect fluids, we introduce a new d…
Wormhole formation in massive gravity: An analytic description
Ayanendu Dutta, Dhritimalya Roy, Nihal Jalal Pullisseri +1
The present study analyses the wormhole solution both in the dRGT- massive gravity and Einstein massive gravity. In both the models, the anisotropic pressure solution in…
Constraints on the Transition Redshift using Hubble Phase Space Portrait
Darshan Kumar, Deepak Jain, Shobhit Mahajan +2
One of the most significant discoveries in modern cosmology is that the universe is currently in a phase of accelerated expansion after a switch from a decelerated expansion. The r…
A non-parametric test of variability of Type Ia supernovae luminosity and CDDR
Darshan Kumar, Akshay Rana, Deepak Jain +3
The first observational evidence for cosmic acceleration appeared from Type Ia supernovae (SNe Type Ia) Hubble diagram from two different groups. However, the empirical treatment o…
Strong lensing systems and galaxy cluster observations as probe to the cosmic distance duality relation
R. F. L. Holanda, F. S. Lima, Akshay Rana +1
{In this paper, we use large scale structure observations to test the redshift dependence of cosmic distance duality relation (CDDR), }, with $D…