122 citations · 311 across the 13 of their papers we have counts for
9 papers · 1 filter
Cross-Bispectrum Constraints from HI Intensity Mapping and Galaxy Surveys
Warren Naidoo, Moumita Aich, Kavilan Moodley
Future neutral hydrogen (HI) intensity mapping (IM) and optical surveys probe large-scale structure over unprecedented volumes, offering powerful constraints on cosmological models…
How much primordial tensor mode is allowed?
Moumita Aich, Yin-Zhe Ma, Wei-Ming Dai +1
The presence of a significant amount of gravitational radiation in the early Universe affects the total energy density and hence the expansion rate in the early epoch. In this work…
Weak lensing in non-statistically isotropic universes
Moumita Aich, Aditya Rotti, Tarun Souradeep
The Bipolar Spherical Harmonics (BipoSH) form a natural basis to study the CMB two point correlation function in a non-statistically isotropic (non-SI) universe. The coefficients o…
Orthogonal BipoSH measures : Scrutinizing sources of isotropy violation
Saurabh Kumar, Aditya Rotti, Moumita Aich +3
The two point correlation function of the CMB temperature anisotropies is generally assumed to be statistically isotropic (SI). Deviations from this assumption could be traced to p…
Generalised Fisher Matrices
A. F. Heavens, M. Seikel, B. D. Nord +4
The Fisher Information Matrix formalism is extended to cases where the data is divided into two parts (X,Y), where the expectation value of Y depends on X according to some theoret…
WMAP anomaly : Weak lensing in disguise
Aditya Rotti, Moumita Aich, Tarun Souradeep
Statistical isotropy (SI) has been one of the simplifying assumptions in cosmological model building. Experiments like WMAP and PLANCK are attempting to test this assumption by sea…