Increasing the bandwidth of resonant gravitational antennas: The case of Explorer

Resonant gravitational wave detectors with an observation bandwidth of tens of hertz are a reality: the antenna Explorer, operated at CERN by the ROG collaboration, has been upgraded with a new read-out. In this new configuration, it exhibits an unprecedented useful bandwidth: in over 55 Hz about it...

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Detalles Bibliográficos
Autores principales: Astone, P., Babusci, D., Bassan, M., Carelli, P., Cavallari, G., Coccia, E., Cosmelli, C., D'Antonio, S., Fafone, V., Fauth, A.C., Federici, G., Giordano, G., Marini, A., Minenkov, Y., Modena, I., Modestino, G., Moleti, A., Pallottino, G.V., Pizzella, G., Quintieri, L., Rocchi, A., Ronga, F., Terenzi, R., Torrioli, G., Visco, M.
Lenguaje:eng
Publicado: 2003
Materias:
General Relativity and Cosmology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.91.111101
http://cds.cern.ch/record/631260
Descripción
Sumario:Resonant gravitational wave detectors with an observation bandwidth of tens of hertz are a reality: the antenna Explorer, operated at CERN by the ROG collaboration, has been upgraded with a new read-out. In this new configuration, it exhibits an unprecedented useful bandwidth: in over 55 Hz about its frequency of operation of 919 Hz the spectral sensitivity is better than 10^{-20} /sqrt(Hz) . We describe the detector and its sensitivity and discuss the foreseable upgrades to even larger bandwidths.

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