167 citations
- Raman Research InstituteIN8 papers
- Inter-University Centre for Astronomy and AstrophysicsIN7 papers
- Indian Institute of AstrophysicsIN3 papers
- Indian Institute of Science BangaloreIN3 papers
- Space Research InstituteRU3 papers
- Tata Institute of Fundamental ResearchIN3 papers
- Aryabhatta Research Institute of Observational SciencesIN2 papers
- Ashoka UniversityIN2 papers
- California Institute of TechnologyUS2 papers
- Cochin University of Science and TechnologyIN2 papers
- Government Medical CollegeIN2 papers
- Homi Bhabha National InstituteIN2 papers
7 papers · 1 filter
Primordial blackhole formation: Exploring chaotic potential with a sharp step via the GLMS perspective
Rinsy Thomas, Jobil Thomas, Minu Joy
A sharp step on a chaotic potential can enhance primordial curvature fluctuations on smaller scales to the to form primordial black holes (PBHs). The present…
Gravitational wave production after inflation for a hybrid inflationary model
Rinsy Thomas, Jobil Thomas, Supin P Surendran +1
We discuss a cosmological scenario with a stochastic background of gravitational waves sourced by the tensor perturbation due to a hybrid inflationary model with cubic potential. T…
and the eternal coasting cosmological model
Moncy V. John
We point out that the nonempty cosmological model has some known antecedents in the literature. Some of those eternal coasting models are published even before the discove…
Constraints on Tensor to Scalar Ratio using WKB Approximation
Aiswarya. A, Minu Joy
Using Wenzel-Kramers-Brillouin (WKB) approximation the scalar and tensor power spectra are obtained. Scale invariant spectra are obtained and the spectral indices come very close t…
The Discovery and Nature of Optical Transient CSS100217:102913+404220
A. J. Drake, S. G. Djorgovski, A. Mahabal +32
We report on the discovery and observations of the extremely luminous optical transient CSS100217:102913+404220 (CSS100217 hereafter). Spectroscopic observations show this transien…
Results from the Supernova Photometric Classification Challenge
Richard Kessler, Bruce Bassett, Pavel Belov +24
We report results from the Supernova Photometric Classification Challenge (SNPCC), a publicly released mix of simulated supernovae (SNe), with types (Ia, Ibc, and II) selected in p…