10 papers
A reassessment of LVE method and hemispherical power asymmetry in CMB temperature data from Planck PR4
Sanjeev Sanyal, Sanjeet K. Patel, Pavan K. Aluri +1
We undertake a reassessment of one of the large angular scale anomalies observed in cosmic microwave background (CMB) temperature signal referred to as Hemispherical Power Asymmetr…
Thurston geometries and parameter constraints from SNIa data
Tanay Gupta, Anshul Verma, Sukanta Panda +1
Following the numerous evidence for large-scale cosmic isotropy violation with the advent of the `precision cosmology' era, we explore the possible advantages of extending the flat…
Examination of frequency and scale dependence of CMB hemispherical power asymmetry
Sanjeev Sanyal, Pavan Kumar Aluri, Arman Shafieloo
In this study, we revisit the well-known cosmic microwave background (CMB) anomaly referred to as Hemispherical Power Asymmetry (HPA), using CMB temperature maps from the Planck mi…
Cosmology-informed Neural Networks to infer dark energy equation-of-state
Anshul Verma, Shashwat Sourav, Pavan K. Aluri +1
We present a framework that combines physics-informed neural networks (PINNs) with Markov Chain Monte Carlo (MCMC) inference to constrain dynamical dark energy models using the Pan…
Probing foreground residuals in cleaned CMB temperature maps from Planck
Sanjeet K. Patel, Pavan K. Aluri, Pranati K. Rath +1
Maps of cosmic microwave background (CMB) are extracted from multi-frequency observations using a variety of cleaning procedures. However, in regions of strong microwave emission,…
Examining statistical isotropy of CMB low multipoles from Planck PR4 data
Pavan Kumar Aluri, Sanjeet Kumar Patel
Low multipoles () in cosmic microwave background (CMB) temperature anisotropies have shown some `peculiarities' when examined since the release of the full sky CMB maps, using a…