User:Jordatech/sandbox

Resonant Mass Antenas

Resonant Mass Antenas (RMA):= “Solid mass that rings like a bell when GW hits it”[1,pg.10]

RMA are narrow-band devices (ie: )[1,pg.10]

Examples of RMA:[1,pg.10]

{//SOME DETECTORS

1) Aluminum Cylinders:

a) EXPLORER : U of Rome, Italy

b) Louisiana State U, USA

2) Niobium cylinder, U of Perth, Australia

3) “Next Gen antennas:”… “Several-ton Aluminum bars cooled to ~0.05K” sensitivity [1,pg.10,[24]]

a) NAUTILUS: U of Rome, Italy

b) AURIGA: U of Legarno, Italy

4) Looking at making large spheres cooled to ~0.05K - makes them omnidirectional “isotropic”

}[1,pg.10]       Normal  0          false  false  false    EN-US  X-NONE  X-NONE                                                                                             Real world problem: Difficult to make materials with a high “Q” {quality?}value so that the effects of thermal noise(ie: Thermally – induced vibrations in large masses used to measure GW) are negated[1,pg. 7]and [1,[19,20,21]]  Normal  0          false  false  false    EN-US  X-NONE  X-NONE Kip S. Thorne’s article on Gravitational Waves (arXiv:gr-qc/9506086)  Normal  0          false  false  false    EN-US  X-NONE  X-NONE