33 citations · 78 across the 9 of their papers we have counts for
9 papers
Understanding the non-Gaussian nature of Galactic foreground emissions towards small scales
Fazlu Rahman, Pravabati Chingangbam, Kevin Huffenberger +4
We present a unified, multi-scale study of non-Gaussianity of Galactic foreground emissions using Minkowski Functionals and generalized skewness-kurtosis parameters, focusing on th…
Cosmoglobe: Towards end-to-end CMB cosmological parameter estimation without likelihood approximations
J. R. Eskilt, K. Lee, D. J. Watts +20
We implement support for a cosmological parameter estimation algorithm as proposed by Racine et al. (2016) in Commander, and quantify its computational efficiency and cost. For a s…
Cosmoglobe DR1 results. II. Constraints on isotropic cosmic birefringence from reprocessed WMAP and Planck LFI data
J. R. Eskilt, D. J. Watts, R. Aurlien +28
Cosmic birefringence is a parity-violating effect that might have rotated the plane of linearly polarized light of the cosmic microwave background (CMB) by an angle since its e…
Cosmoglobe DR1 results. I. Improved Wilkinson Microwave Anisotropy Probe maps through Bayesian end-to-end analysis
D. J. Watts, A. Basyrov, J. R. Eskilt +30
We present Cosmoglobe Data Release 1, which implements the first joint analysis of WMAP and Planck LFI time-ordered data, processed within a single Bayesian end-to-end framework. T…
Statistical properties of Galactic synchrotron temperature and polarization maps -- a multi-frequency comparison
Fazlu Rahman, Pravabati Chingangbam, Tuhin Ghosh
Understanding the statistical properties of synchrotron emission from our Galaxy is valuable from the perspective of observations targeting signals of cosmological origin, as well…
BeyondPlanck IV. On end-to-end simulations in CMB analysis -- Bayesian versus frequentist statistics
M. Brilenkov, K. S. F. Fornazier, L. T. Hergt +48
End-to-end simulations play a key role in the analysis of any high-sensitivity CMB experiment, providing high-fidelity systematic error propagation capabilities unmatched by any ot…
Analysis of the structural complexity of Crab Nebula observed at radio frequency using a multifractal approach
Athokpam Langlen Chanu, Pravabati Chingangbam, Fazlu Rahman +2
The Crab Nebula is an astrophysical system that exhibits complex morphological patterns at different observing frequencies. We carry out a systematic investigation of the structura…
The nature of non-Gaussianity and statistical isotropy of the 408 MHz Haslam synchrotron map
Fazlu Rahman, Pravabati Chingangbam, Tuhin Ghosh
Accurate component separation of full-sky maps in the radio and microwave frequencies, such as the cosmic microwave background (CMB), relies on a thorough understanding of the stat…
Aspects of Black Hole Physics and Formation of Super-massive Black Holes from Ultra-light Dark Bosons
Patrick Das Gupta, Fazlu Rahman
First, we verify that the physical parameters estimated for the four directly detected gravitational wave (GW) events involving coalescence of binary black holes (BHs) indeed uphol…