9 papers
Quantifying Foreground Contamination in the Dark Ages 21 cm Power Spectrum Using an Electromagnetically Simulated Dipole Antenna Atop a Dielectric Surface
Willow Smith, Jonathan C. Pober, Bang D. Nahn +2
The highly-redshifted 21 cm signal from the cosmic Dark Ages presents an exciting frontier for cosmology, with the potential to observe a large number of Fourier modes of the cosmi…
Mitigating Simulator Dependence in AI Parameter Inference for the Epoch of Reionization: The Importance of Simulation Diversity
Jasper Solt, Jonathan C. Pober, Stephen H. Bach
The 21cm signal of neutral hydrogen contains a wealth of information about the poorly constrained era of cosmological history, the Epoch of Reionization (EoR). Recently, AI models…
NIAC project report: Solar system-scale VLBI to dramatically improve cosmological distance measurements
Matthew McQuinn, Miguel Morales, Casey McGrath +7
We investigate the feasibility and scientific potential of the Cosmic Positioning System (CPS), a space mission concept enabling purely geometric distance measurements to sources a…
The FarView Low Frequency Radio Array on the Moon's Far Side: Science and Array Architecture
Jack O. Burns, Judd Bowman, Tzu-Ching Chang +8
FarView is a proposed low frequency radio interferometer for deployment on the lunar far side, enabled by the Moon's radio quiet environment. Operating over 1-50 MHz inaccessible f…
Towards a Robust Machine-Learning Pipeline for 21-cm Cosmology Data Analysis I: A Roadmap for Development and Demonstration of Robustness Against PSF Modeling Errors
Madhurima Choudhury, Jonathan C. Pober
The 21-cm signal from the Epoch of Reionization (EoR) is a powerful probe of the evolution of the Universe. However, accurate measurements of the EoR signal from radio interferomet…
The Impact of Foregrounds on Dark Ages Measurements with the Highly Redshifted 21 cm Line
Jonathan C. Pober, Willow Smith
Studies of the cosmic dark ages () using the highly redshifted 21 cm line of neutral hydrogen offer unparalleled amounts of cosmological information, an…