Bias on Tensor-to-Scalar Ratio Inference With Estimated Covariance Matrices

Kavli Affiliate: W. L. Kimmy Wu | First 5 Authors: Dominic Beck, Ari Cukierman, W. L. Kimmy Wu, , | Summary: We investigate simulation-based bandpower covariance matrices commonly used in cosmological parameter inferences such as the estimation of the tensor-to-scalar ratio~$r$. We find that upper limits on $r$ can be biased low. The underestimation of […]


Continue.. Bias on Tensor-to-Scalar Ratio Inference With Estimated Covariance Matrices

Bias on Tensor-to-Scalar Ratio Inference With Estimated Covariance Matrices

Kavli Affiliate: W. L. Kimmy Wu | Summary:We investigate simulation-based bandpower covariance matrices commonly used in cosmological parameter inferences such as the estimation of the tensor-to-scalar ratio $r$. We find that upper limits on $r$ can be biased low by tens of percent. The underestimation of the upper limit is most severe when the number […]


Continue.. Bias on Tensor-to-Scalar Ratio Inference With Estimated Covariance Matrices

Detection of a dense group of hyper-compact radio sources in the central parsec of the Galaxy

Kavli Affiliate: R. Morris | First 5 Authors: Jun-Hui Zhao, Mark R. Morris, W. M. Goss, , | Summary: Using the JVLA, we explored the Galactic center (GC) with a resolution of 0.05" at 33.0 and 44.6 GHz. We detected 64 hyper-compact radio sources (HCRs) in the central parsec. The dense group of HCRs can […]


Continue.. Detection of a dense group of hyper-compact radio sources in the central parsec of the Galaxy

Probing Cosmic Inflation with the LiteBIRD Cosmic Microwave Background Polarization Survey

Kavli Affiliate: C. L. Kuo | First 5 Authors: LiteBIRD Collaboration, E. Allys, K. Arnold, J. Aumont, R. Aurlien | Summary: LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics. The Japan Aerospace Exploration Agency (JAXA) […]


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MAQRO — BPS 2023 Research Campaign Whitepaper

Kavli Affiliate: Sven Herrmann | First 5 Authors: Rainer Kaltenbaek, Markus Arndt, Markus Aspelmeyer, Peter F. Barker, Angelo Bassi | Summary: The objective of the proposed MAQRO mission is to harness space for achieving long free-fall times, extreme vacuum, nano-gravity, and cryogenic temperatures to test the foundations of physics in macroscopic quantum experiments. This will […]


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Asteroid Measurements at Millimeter Wavelengths with the South Pole Telescope

Kavli Affiliate: C. L. Kuo | First 5 Authors: P. M. Chichura, A. Foster, C. Patel, N. Ossa-Jaen, P. A. R. Ade | Summary: We present the first measurements of asteroids in millimeter wavelength (mm) data from the South Pole Telescope (SPT), which is used primarily to study the cosmic microwave background (CMB). We analyze […]


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X-ray morphology of cluster-mass haloes in self-interacting dark matter

Kavli Affiliate: Steven W. Allen | First 5 Authors: Xuejian Shen, Thejs Brinckmann, David Rapetti, Mark Vogelsberger, Adam Mantz | Summary: We perform cosmological zoom-in simulations of $19$ relaxed cluster-mass haloes with the inclusion of adiabatic gas within the cold dark matter (CDM) and self-interacting dark matter (SIDM) models. These clusters are selected as dynamically […]


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Incremental Fermi Large Area Telescope Fourth Source Catalog

Kavli Affiliate: Seth W. Digel | First 5 Authors: Fermi-LAT collaboration, :, Soheila Abdollahi, Fabio Acero, Luca Baldini | Summary: We present an incremental version (4FGL-DR3, for Data Release 3) of the fourth Fermi-LAT catalog of gamma-ray sources. Based on the first twelve years of science data in the energy range from 50 MeV to […]


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