TY - JOUR
T1 - Milky way satellites shining bright in gravitational waves
AU - Roebber, Elinore
AU - Buscicchio, Riccardo
AU - Vecchio, Alberto
AU - Moore, Christopher J.
AU - Klein, Antoine
AU - Korol, Valeriya
AU - Toonen, Silvia
AU - Gerosa, Davide
AU - Goldstein, Janna
AU - Gaebel, Sebastian M.
AU - Woods, Tyrone E.
N1 - 7 pages, 2 figures, submitted
PY - 2020/5/10
Y1 - 2020/5/10
N2 - The population of Milky Way satellite galaxies is of great interest for cosmology, fundamental physics, and astrophysics. They represent the faint end of the galaxy luminosity function, are the most dark-matter dominated objects in the local Universe, and contain the oldest and most metal-poor stellar populations. Recent surveys have revealed around 60 satellites, but this could represent less than half of the total. Characterization of these systems remains a challenge due to their low luminosity. We consider the gravitational wave observatory LISA as a potential tool for studying these satellites through observations of their short-period double white dwarf populations. LISA will observe the entire sky without selection effects due to dust extinction, complementing optical surveys, and could potentially discover massive satellites hidden behind the disk of the galaxy.
AB - The population of Milky Way satellite galaxies is of great interest for cosmology, fundamental physics, and astrophysics. They represent the faint end of the galaxy luminosity function, are the most dark-matter dominated objects in the local Universe, and contain the oldest and most metal-poor stellar populations. Recent surveys have revealed around 60 satellites, but this could represent less than half of the total. Characterization of these systems remains a challenge due to their low luminosity. We consider the gravitational wave observatory LISA as a potential tool for studying these satellites through observations of their short-period double white dwarf populations. LISA will observe the entire sky without selection effects due to dust extinction, complementing optical surveys, and could potentially discover massive satellites hidden behind the disk of the galaxy.
KW - astro-ph.GA
KW - astro-ph.HE
KW - astro-ph.SR
KW - gr-qc
UR - http://www.scopus.com/inward/record.url?scp=85086122542&partnerID=8YFLogxK
U2 - 10.3847/2041-8213/ab8ac9
DO - 10.3847/2041-8213/ab8ac9
M3 - Article
SN - 2041-8205
VL - 894
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 2
M1 - L15
ER -