Other
Scientific paper
Nov 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..873..452a&link_type=abstract
LASER INTERFEROMETER SPACE ANTENNA: 6th International LISA Symposium. AIP Conference Proceedings, Volume 873, pp. 452-459 (2006
Other
Astrometric And Interferometric Instruments, Gravitational Radiation Detectors, Mass Spectrometers, And Other Instrumentation And Techniques, Black Holes, Background Radiations
Scientific paper
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 some of the space detectors as 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 signal frequency and the PBH merger rate in our Milky Way galaxy. Even for the highest estimated rate of PBH mergers in our Milky Way halo (~ 1.2 × 10-2 yr-1 MWH-1), in which all MACHOs would be PBHs, we don't expect that PBH binaries will produce a confusion noise too much above the low end of the LISA sensitivity band for frequencies below 10-3 Hz. Furthermore, very large ground base interferometers such as LIGO and VIRGO can soon put constraints on this rate. Finally, we can say that in any case DECIGO and BBO are free from facing a PBH confusion noise.
Aguiar Odylio Denys
de Araujo Jose Carlos N.
Miranda Oswaldo D.
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