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The Lunar Gravitational-wave Antenna: mission studies and science case
Burrows, Adam; Mastrobuono-Battisti, Alessandra; Kobayashi, Chiaki +83 more
The Lunar Gravitational-wave Antenna (LGWA) is a proposed array of next-generation inertial sensors to monitor the response of the Moon to gravitational waves (GWs). Given the size of the Moon and the expected noise produced by the lunar seismic background, the LGWA would be able to observe GWs from about 1 mHz to 1 Hz. This would make the LGWA th…
Mapping dark matter in the Milky Way using normalizing flows and Gaia DR3
Lim, Sung Hak; Buckley, Matthew R.; Shih, David +1 more
We present a novel, data-driven analysis of Galactic dynamics, using unsupervised machine learning — in the form of density estimation with normalizing flows — to learn the underlying phase space distribution of 6 million nearby stars from the Gaia DR3 catalog. Solving the equilibrium collisionless Boltzmann equation, we calculate — for the first …
Measuring σ 8 using DESI Legacy Imaging Surveys Emission-Line galaxies and Planck CMB lensing, and the impact of dust on parameter inference
Miquel, Ramon; Sanchez, Eusebio; Palanque-Delabrouille, Nathalie +39 more
Measuring the growth of structure is a powerful probe for studying the dark sector, especially in light of the σ 8 tension between primary CMB anisotropy and low-redshift surveys. This paper provides a new measurement of the amplitude of the matter power spectrum, σ 8, using galaxy-galaxy and galaxy-CMB lensing power spectra …
Forward modeling fluctuations in the DESI LRGs target sample using image simulations
Juneau, S.; Moustakas, J.; Brooks, D. +50 more
We use the forward modeling pipeline, Obiwan, to study the imaging systematics of the Luminous Red Galaxies (LRGs) targeted by the Dark Energy Spectroscopic Instrument (DESI). Imaging systematics refers to the false fluctuation of galaxy densities due to varying observing conditions and astrophysical foregrounds corresponding to the imaging survey…