no code implementations • 21 Dec 2020 • Pablo F. de Salas, Axel Widmark
This report summarises progress made in estimating the local density of dark matter ($\rho_{\mathrm{DM,\odot}}$), a quantity that is especially important for dark matter direct detection experiments.
Astrophysics of Galaxies High Energy Physics - Phenomenology
1 code implementation • 4 Nov 2020 • Axel Widmark, Pablo Fernández de Salas, Giacomo Monari
We infer the gravitational potential of the Galactic disk by analysing the phase-space densities of 120 stellar samples in 40 spatially separate sub-regions of the solar neighbourhood, using Gaia's second data release (DR2), in order to quantify spatially dependent systematic effects that bias this type of measurement.
Astrophysics of Galaxies
1 code implementation • 25 Feb 2019 • Axel Widmark
We introduce an alternative mechanism, by which a sub-GeV dark matter particle with spin-dependent coupling to nucleons or electrons can cause hyperfine transitions and lower the spin temperature directly, with negligible reduction of the kinetic temperature of the hydrogen gas.
Cosmology and Nongalactic Astrophysics
1 code implementation • 1 Aug 2018 • Axel Widmark, Daniel J. Mortlock, Hiranya V. Peiris
With such a large data set, it is possible to infer properties of the WD population using only astrometric and photometric information.
Solar and Stellar Astrophysics
1 code implementation • 25 Jan 2018 • Axel Widmark, Boris Leistedt, David W. Hogg
Multiple stellar systems are ubiquitous in the Milky Way, but are often unresolved and seen as single objects in spectroscopic, photometric, and astrometric surveys.
Solar and Stellar Astrophysics Astrophysics of Galaxies
