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Statistical 21-cm Signal Separation via Gaussian Process Regression Analysis
F. G. Mertens, A. Ghosh, L. V. E. Koopmans
Detecting and characterizing the Epoch of Reionization and Cosmic Dawn via the redshifted 21-cm hyperfine line of neutral hydrogen will revolutionize the study of the formation of…
The inner mass power spectrum of galaxies using strong gravitational lensing: beyond linear approximation
Saikat Chatterjee, Léon V. E. Koopmans
In the last decade the detection of individual massive dark matter sub-halos has been possible using potential correction formalism in strong gravitational lens imaging. Here we pr…
Deconvolving the Wedge: Maximum-Likelihood Power Spectra via Spherical-Wave Visibility Modeling
Abhik Ghosh, Florent Mertens, Leon V. E. Koopmans
Direct detection of the Epoch of Reionization (EoR) via the red-shifted 21-cm line will have unprecedented implications on the study of structure formation in the infant Universe.…
Upper limits on the 21-cm Epoch of Reionization power spectrum from one night with LOFAR
A. H. Patil, S. Yatawatta, L. V. E. Koopmans +25
We present the first limits on the Epoch of Reionization (EoR) 21-cm HI power spectra, in the redshift range , using the Low-Frequency Array (LOFAR) High-Band Antenna (…
Recovering the HII region size statistics from 21-cm tomography
Koki Kakiichi, Suman Majumdar, Garrelt Mellema +7
We introduce a novel technique, called "granulometry", to characterize and recover the mean size and the size distribution of HII regions from 21-cm tomography. The technique is ea…