186 citations · 1.7k across the 54 of their papers we have counts for
7 papers · 1 filter
Primordial Standard Clock Models and CMB Residual Anomalies
Matteo Braglia, Xingang Chen, Dhiraj Kumar Hazra
The residuals of the power spectra of WMAP and Planck's cosmic microwave background (CMB) anisotropies data are known to exhibit a few interesting anomalies at different scales wit…
Dark Twilight Joined with the Light of Dawn to Unveil the Reionization History
Daniela Paoletti, Dhiraj Kumar Hazra, Fabio Finelli +1
Improved measurement of the Cosmic Microwave Background polarization from Planck allows a detailed study of reionization beyond the average optical depth. The lower value of the op…
Inflation Story: slow-roll and beyond
Dhiraj Kumar Hazra, Daniela Paoletti, Ivan Debono +3
We present constraints on inflationary dynamics and features in the primordial power spectrum of scalar perturbations using the Cosmic Microwave Background temperature, polarizatio…
Uncovering the History of Cosmic Inflation from Anomalies in Cosmic Microwave Background Spectra
Matteo Braglia, Xingang Chen, Dhiraj Kumar Hazra
We propose an inflationary primordial feature model that can explain both the large and small-scale anomalies in the currently measured cosmic microwave background (CMB) anisotropy…
Gaussian Process Reconstruction of Reionization History
Aditi Krishak, Dhiraj Kumar Hazra
We reconstruct the history of reionization using Gaussian process regression. Using the UV luminosity data compilation from Hubble Frontiers Fields we reconstruct the redshift evol…
Comparing multi-field primordial feature models with the Planck data
Matteo Braglia, Xingang Chen, Dhiraj Kumar Hazra
In this paper, we use a complete model of classical primordial standard clocks as an example to develop a methodology of directly comparing numerical predictions from complicated m…
Probing Primordial Features with the Stochastic Gravitational Wave Background
Matteo Braglia, Xingang Chen, Dhiraj Kumar Hazra
The stochastic gravitational wave background (SGWB) offers a new opportunity to observe signals of primordial features from inflationary models. We study their detectability with f…