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A Clash of Clusters Provides New Clue to Dark Matter
Special ACKS Seminar: Dragan Huterer
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HEPL-KIPAC Seminar: Dr. Martin Tajmar, MSS
| What | HEPL seminar |
|---|---|
| When |
20 February 08 from 04:15 pm to 05:30 pm |
| Where | Physics and Astrophysics Building, Conference Rooms 102/103 |
| Contact Name | Dawn Soriano |
| Contact Email | dsoriano@stanford.edu |
| Contact Phone | (650) 723-0100 |
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LISA Thrusters and the Search for Frame Dragging at Low Temperatures at ARC
Abstract: The Space Propulsion & Advanced Concepts department at the Austrian Research Centers works on the development of enabling technologies for future spacecraft and the transfer towards terrestrial technologies. This talk will present two highlights that focus with the detection of weak gravitational phenomena. Under contract with ESA, we are presently developing a field emission thruster (FEEP) for the LISA Pathfinder satellite that enables ultraprecise attitude control, which shall demonstrate the technology for gravitational wave detection for the LISA spacecraft. Our second activity is looking for frame-dragging-like signals from spinning matter at low temperatures. It was recently proposed that a large frame-dragging field could be responsible for a reported anomaly of the Cooper-pair mass found in Niobium superconductors. In 2003, a test program was initiated to investigate this conjecture using sensitive accelerometers and fiber optic gyroscopes in the close vicinity of fast spinning superconducting rings. Recently obtained high-precision data show that the angular velocity and acceleration applied to the superconductor can indeed be seen on the sensors. Our measurements and analysis suggest that the signal can not be explained by mechanical influence or by carefully monitored magnetic fields surrounding the sensors.
Biography: Dr. Tajmar is a research scientist and project manager in the Space Propulsion group at ARC Seibersdorf research, Austria's largest research institution.
MASS: Lance Simms