GW4 - Space GW Detection (LISA) |
Speaker_ |
De Araujo, Jose Carlos |
Co-autors |
Odylio Aguiar and Oswaldo Miranda |
Talk _ |
Primordial black-hole gravitational wave background noise in the LISA, DECIGO and BBO frequency bands |
Abstract _ |
According to the standard model primordial black holes (PBHs) could have been generated during the first few moments after the big bang as consequence of density fluctuations of matter. Although most regions of high density would be quickly dispersed by the expansion of the universe, primordial black holes would be stable, persisting to the present. If this really happened the Laser Interferometer Space Antenna (LISA), the DECihertz Interferometer Gravitational wave Observatory (DECIGO), and the Big Bang Observer (BBO) will probably detect the gravitational wave background produced by those PBHs. Here we calculated this background as a function of the PBH population in the neighborhood of Earth. Depending of what population is assumed the gravitational wave background produced may give trouble for these space interferometers in their task to detect other signals. Very large ground base interferometers such as LIGO and VIRGO can soon give information that would put stringent constraints on this population. |