302 citations · 3k across the 71 of their papers we have counts for
8 papers · 1 filter
Probing quasar lifetimes with proximate -centimetre absorption in the diffuse intergalactic medium at redshifts
Tomáš Šoltinský, James S. Bolton, Margherita Molaro +5
Enhanced ionizing radiation in close proximity to redshift quasars creates short windows of intergalactic Ly transmission blueward of the quasar Ly emission line…
Halo mass function in scale invariant models
Swati Gavas, J S Bagla, Nishikanta Khandai +1
Sheth-Tormen mass function has been widely used to quantify the abundance of dark matter halos. It is a significant improvement over the Press-Schechter mass function as it uses el…
Experimental generation of polarization entanglement from spontaneous parametric down-conversion pumped by spatiotemporally highly incoherent light
Cheng Li, Boris Braverman, Girish Kulkarni +1
The influence of pump coherence on the entanglement produced in spontaneous parametric down-conversion (SPDC) is important to understand, both from a fundamental perspective, and f…
The need for obscured supermassive black hole growth to explain quasar proximity zones in the epoch of reionization
Sindhu Satyavolu, Girish Kulkarni, Laura C. Keating +1
Proximity zones of high-redshift quasars are unique probes of supermassive black hole formation, but simultaneously explaining proximity zone sizes and black hole masses has proved…
The Sherwood-Relics simulations: overview and impact of patchy reionization and pressure smoothing on the intergalactic medium
Ewald Puchwein, James S. Bolton, Laura C. Keating +10
We present the Sherwood-Relics simulations, a new suite of large cosmological hydrodynamical simulations aimed at modelling the intergalactic medium (IGM) during and after the cosm…
Long Dark Gaps in the Ly Forest at : Evidence of Ultra Late Reionization from XQR-30 Spectra
Yongda Zhu, George D. Becker, Sarah E. I. Bosman +22
We present a new investigation of the intergalactic medium (IGM) near reionization using dark gaps in the Lyman- (Ly) forest. With its lower optical depth, Ly offers a pot…
Implications of the cosmological 21-cm absorption profile for high-redshift star formation and deep JWST surveys
Shikhar Mittal, Girish Kulkarni
Apart from its anomalously large depth, the cosmological 21-cm absorption signal measured by the EDGES collaboration also has a shape that is distinctly different from theoretical…
A classical model of spontaneous parametric down-conversion
Girish Kulkarni, Jeremy Rioux, Boris Braverman +2
We model spontaneous parametric down-conversion (SPDC) as classical difference frequency generation (DFG) of the pump field and a hypothetical stochastic "vacuum" seed field. We an…