Talk detail

Participant	Alves, Marcio Eduardo da Silva
Institution	Universidade Federal de Itajuba - Av. BPS 1303 - Itajuba - Minas Gerais - Brazil

Session	AT2	Accepted	Yes	Order	3	Time	20'
Talk	Oral abstract	Title	Testing alternative theories of gravity using LISA and Pulsar Timing detections of gravitational waves
Co-authors	Massimo Tinto
Abstract	Since a gravitational wave signal predicted by the most general relativistic metric theory of gravity accounts for six polarization modes, we have derived the responses of the LISA mission and estimated their sensitivities to vector and scalar-type waves. We have also estimated the single-antenna sensitivities to these six polarizations for Pulsar Timing experiments. We find pulsar timing to be significantly more sensitive, over their entire observational frequency band, to scalar-longitudinal and vector waves than to scalar-transverse and tensor waves. The same happens for LISA, but at the high part of its frequency band. Our results imply that a direct detection of gravitational radiation by these experiments will result in a stringent test of the theory of general relativity.

Session	GW2	Accepted	Yes	Order	8	Time	20' + 2'
Talk	Oral abstract	Title	Testing alternative theories of gravity using LISA and Pulsar Timing detections of gravitational waves
Co-authors	Massimo Tinto
Abstract	Since a gravitational wave signal predicted by the most general relativistic metric theory of gravity accounts for six polarization modes, we have derived the responses of the LISA mission and estimated their sensitivities to vector and scalar-type waves. We have also estimated the single-antenna sensitivities to these six polarizations for Pulsar Timing experiments. We find pulsar timing to be significantly more sensitive, over their entire observational frequency band, to scalar-longitudinal and vector waves than to scalar-transverse and tensor waves. The same happens for LISA, but at the high part of its frequency band. Our results imply that a direct detection of gravitational radiation by these experiments will result in a stringent test of the theory of general relativity.