27 citations · 180 across the 14 of their papers we have counts for
14 papers
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,…
Parity in Planck full-mission CMB temperature maps
Srikanta Panda, Pavan K. Aluri, Pramoda Kumar Samal +1
In the standard model of cosmology, Cosmic Microwave Background (CMB) sky is expected to show no symmetry preferences. Following our previous studies, we explore the presence of an…
Finsler space-time can explain both parity asymmetry and power deficit seen in CMB temperature anisotropies
Zhe Chang, Pranati K. Rath, Yu Sang +2
We propose a framework of Finsler space-time to explain the observed parity asymmetry and the power deficit in the low- () multipole range of co…
Anisotropic power spectrum and the observed low-l power in PLANCK CMB data
Zhe Chang, Pranati K. Rath, Yu Sang +1
In this work, we study a direction dependent power spectrum in anisotropic Finsler space-time. We use this direction dependent power spectrum to address the low-l power observed in…
Testing isotropy of cosmos with WMAP and PLANCK data
Pranati K. Rath, Pramoda Kumar Samal
In recent years, there have been a large number of studies which support violation of statistical isotropy. Meanwhile, there are some studies which also found inconsistency. We use…
Testing statistical Isotropy in Cosmic Microwave Background Polarization maps
Pranati K. Rath, Pramoda Kr. Samal, Srikanta Panda +2
We apply our symmetry based Power tensor technique to test conformity of PLANCK Polarization maps with statistical isotropy. On a wide range of angular scales (l=40-150), our preli…
Dipole Modulation of Cosmic Microwave Background Temperature and Polarization
Shamik Ghosh, Rahul Kothari, Pankaj Jain +1
We propose a dipole modulation model for the Cosmic Microwave Background Radiation (CMBR) polarization field. We show that the model leads to correlations between l and l+1 multipo…
Imprint of Inhomogeneous and Anisotropic Primordial Power Spectrum on CMB Polarization
Rahul Kothari, Shamik Ghosh, Pranati K. Rath +2
We consider an inhomogeneous model and independently an anisotropic model of primordial power spectrum in order to describe the observed hemispherical anisotropy in Cosmic Microwav…
Cosmological Power Spectrum in Non-commutative Space-time
Rahul Kothari, Pranati K. Rath, Pankaj Jain
We propose a generalized star product which deviates from the standard product when the fields at evaluated at different space-time points. This produces no changes in the standard…
Noncommutative Geometry and the Primordial Dipolar Imaginary Power Spectrum
Pankaj Jain, Pranati K. Rath
We argue that an anisotropic dipolar imaginary primordial power spectrum is possible within the framework of noncommutative space-times. We show that such a spectrum provides a goo…
Relating the inhomogeneous power spectrum to the CMB hemispherical anisotropy
Pranati K. Rath, Pavan K. Aluri, Pankaj Jain
We relate the observed hemispherical anisotropy in the cosmic microwave radiation data to an inhomogeneous power spectrum model. The hemispherical anisotropy can be parameterized i…
Testing the Dipole Modulation Model in CMBR
Pranati K. Rath, Pankaj Jain
The hemispherical power asymmetry, observed in the CMBR data, has generally been interpreted in terms of the dipole modulation model for the temperature fluctuations. Here we point…
Direction dependence of the power spectrum and its effect on the Cosmic Microwave Background Radiation
Pranati K. Rath, Tanmay Mudholkar, Pankaj Jain +2
We study several anisotropic inflationary models and their implications for the observed violation of statistical isotropy in the CMBR data. In two of these models the anisotropy d…
Cross-correlation analysis of CMB with foregrounds for residuals
Pavan K. Aluri, Pranati K. Rath
In this paper, we try to probe whether a clean CMB map obtained from the raw satellite data using a cleaning procedure is sufficiently clean. Specifically we study if there are any…