Giovedì 28 ottobre alle ore 14:30, il Prof. Jan Harms del Gran Sasso Science Institute, L’Aquila, terrà il web-seminar dal titolo: Lunar GW Antenna – Opening the decihertz band to GW observations.
Gravitational waves excite quadrupolar vibrations of elastic bodies. Monitoring these vibrations was one of the first concepts proposed for the detection of GWs by Joseph Weber. At laboratory scale, these experiments became known as resonant-bar detectors, which form an important part of the history of GW detection. It was also Weber who suggested to monitor vibrations of the Moon to search for GWs in the mHz band. His Lunar Surface Gravimeter was deployed on the Moon in 1972 by the Apollo 17 crew. A design error made it impossible to carry out the intended search for GWs, but the idea remains intriguing. We propose the Lunar Gravitational-Wave Antenna (LGWA) as a novel technological concept to observe GWs on the Moon. It consists of an array of high-sensitivity seismometers to be deployed in a permanent shadow near the lunar south or north pole. LGWA would have rich scientific synergies with other GW detectors like LISA and ET and also with EM observatories. At the same time, it would serve as a high-precision geophysical station shedding light on the interior structure of the Moon and on the Moon’s formation history.
Web-seminar ad accesso riservato.