In this Letter, we show that multiband observations of stellar-mass binary black holes by the next generation of ground-based observatories (3G) and the space-based Laser Interferometer Space Antenna (LISA) would facilitate a comprehensive test of general relativity by simultaneously measuring all the post-Newtonian coefficients. Multiband observations would measure most of the known post-Newtonian phasing coefficients to an accuracy below a few percent - 2 orders-of-magnitude better than the best bounds achievable from even "golden"binaries in the 3G or LISA bands. Such multiparameter bounds would play a pivotal role in constraining the parameter space of modified theories of gravity beyond general relativity.
Gupta, A., Datta, S., Kastha, S., Borhanian, S., Arun, K., Sathyaprakash, B. (2020). Multiparameter Tests of General Relativity Using Multiband Gravitational-Wave Observations. PHYSICAL REVIEW LETTERS, 125(20) [10.1103/PhysRevLett.125.201101].
Multiparameter Tests of General Relativity Using Multiband Gravitational-Wave Observations
Borhanian, S;
2020
Abstract
In this Letter, we show that multiband observations of stellar-mass binary black holes by the next generation of ground-based observatories (3G) and the space-based Laser Interferometer Space Antenna (LISA) would facilitate a comprehensive test of general relativity by simultaneously measuring all the post-Newtonian coefficients. Multiband observations would measure most of the known post-Newtonian phasing coefficients to an accuracy below a few percent - 2 orders-of-magnitude better than the best bounds achievable from even "golden"binaries in the 3G or LISA bands. Such multiparameter bounds would play a pivotal role in constraining the parameter space of modified theories of gravity beyond general relativity.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
