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5 papers · 2 filters
Violation of in Brans-Dicke gravity
Hoang Ky Nguyen, Bertrand Chauvineau
The Brans Class I solution in Brans-Dicke gravity is a staple in the study of gravitational theories beyond General Relativity. Discovered in 1961, it describes the exterior vacuum…
Domain walls in light of Cosmic Microwave Background and Pulsar Timing Array data
D. Grüber, P. P. Avelino, L. Sousa
In this paper, we study the compatibility of biased domain wall scenarios with current gravitational wave data. We show that the Cosmic Microwave Background bounds on the fractiona…
Sound speed as a source of the gravitational field in modified gravity
P. P. Avelino
In the context of gravity and other modified theories of gravity, the knowledge of the first order variation of the trace of the energy-momentum tensor with respect to…
Impact of Star Pressure on in Modified Gravity beyond Post-Newtonian Approach
Hoang Ky Nguyen, Bertrand Chauvineau
We provide a concrete example exhibiting marked deviation from the PPN approximation in a modified theory of gravity. Specifically, we derive the exact formula for the Robertson pa…
Correlated 0.01Hz-40Hz seismic and Newtonian noise and its impact on future gravitational-wave detectors
Kamiel Janssens, Guillaume Boileau, Nelson Christensen +22
We report correlations in underground seismic measurements with horizontal separations of several hundreds of meters to a few kilometers in the frequency range 0.01Hz to 40Hz. Thes…