Milky Way Satellites Shining Bright in Gravitational Waves
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 stell...
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| Veröffentlicht in: | Astrophysical journal. Letters 2020-05, Vol.894 (2), p.L15 |
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| creator | Roebber, Elinore Buscicchio, Riccardo Vecchio, Alberto Moore, Christopher J. Klein, Antoine Korol, Valeriya Toonen, Silvia Gerosa, Davide Goldstein, Janna Gaebel, Sebastian M. Woods, Tyrone E. |
| description | 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. |
| doi_str_mv | 10.3847/2041-8213/ab8ac9 |
| format | Article |
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| subjects | Astrophysics Cosmology Dwarf galaxies Galaxies Gravitation Gravitational wave astronomy Gravitational waves LISA (antenna) Local group (astronomy) Luminosity Magellanic Clouds Milky Way Satellite observation Satellites Sky surveys (astronomy) Stellar populations White dwarf stars |
| title | Milky Way Satellites Shining Bright in Gravitational Waves |
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