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Extreme Mass Ratio Captures

A particularly exciting probable source of gravitational waves which LISA should observe is the gravitational radiation generated by a star-sized object, such as a 10 solar mass black hole, falling into a supermassive black hole (SMBH). Such events event will provide new precision tests of strong field general relativity and may provide definitive proof that those dark ultra-dense massive objects now routinely observered by astronomers are indeed, precisely, black holes. Up to a few thousand such events may be observable by LISA.

The data here correspond to a 1 solar mass black hole falling into any of three sorts of SMBH. A 107 solar mass black hole in NGC4742, a 105 solar mass black hole at z=0.5, or the black hole at the center of our galaxy SgrA*. The files linked under the heading "Incident Wave Data" contain data describing the gravitational waves arriving from these sources at the solar barycenter. The "Output Data" contain simulated output from LISA for these events. The output data are of two varieties, Time Delay Interferometry (TDI) outputs, corresponding to the proposed interferometry scheme for LISA, and Michelson outputs, assembled from the TDI information to correspond to more traditional interferometry.

EMRi mock data

Jump to:
Caltech Group - November 2003
1 + 1x107 @ N4742
1 + 3x106 @ SgrA*
1 + 1x105 @ z=0.5

Contributor Description Incident Wave Data Output Data Images
Caltech Group Text Description File directory
1+107 @ NGC4742
Barycenter (695Mb) Michelson (2Gb)

TDI (2Gb)

Images directory
spectral density with noise
spectral density without noise
Caltech Group Text Description File directory
1 + 3x106 @ SgrA*
Barycenter (649Mb) Michelson (2Gb)

TDI (2Gb)

Images directory
spectral density with noise
spectral density without noise
Caltech Group Text Description File directory
1 + 1x105 @ z=0.5
Barycenter (735Mb) Michelson (2Gb)

TDI (2Gb)

Images directory
spectral density with noise
spectral density without noise

 


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