The Laser Interferometer Space Antenna (LISA)

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

LISA is a joint NASA/ESA space mission designed to measure gravitational waves in the band from 0.1 mHz to 0.1 Hz, a band that is richly populated by strong sources of gravitational waves. Signals will come from a wide range of sources: massive black holes merging in galaxies; compact objects captured by massive black holes; ultra-compact Galactic binaries; and possibly other sources such as relics of the Big Bang. These sources convey detailed information addressing a wide range of physics and astrophysics: the history of galaxies and black holes in the universe; general relativity; measurements of luminosity distances; the physics of dense matter and stellar remnants; and possibly new physics associated with events in the very early universe. The LISA mission uses laser metrology between three spacecraft separated by 5 million km to detect gravitational wave sources with very high sensitivity. We will describe the LISA mission and summarize its current status, including technology development and the upcoming LISA Pathfinder mission.

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