NASA is developing a new approach to detecting low-frequency gravitational waves by precisely measuring the apparent motion of sky objects. The project, led by Paul Stankus of Brookhaven Science Associates, aims to utilize optically independent spacecraft for astrometric measurements.
The scientific goal, according to NASA, is to enable a new method for observing gravitational waves at low frequencies. These waves manifest as a coordinated, albeit extremely small, apparent motion of all sky objects as the wave passes Earth. This detection method focuses on the astrometric gravitational wave signature – the subtle changes in position of celestial bodies caused by these waves.
The innovation lies in deploying a new approach to precision astrometry. NASA’s summary states that this involves using optically independent spacecraft, though details regarding the specifics of deployment and technology were not provided in the source material. The project seeks to expand current gravitational wave detection capabilities, which primarily focus on higher frequencies detected by instruments like LIGO and Virgo.
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