Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A.

By T. Baker, Emilio Bellini, Pedro G. Ferreira, Macarena Lagos, J. Noller, I. Sawicki. Physical Review Letters, 2017

650 citations recorded by the source corpus.

The detection of an electromagnetic counterpart (GRB 170817A) to the gravitational-wave signal (GW170817) from the merger of two neutron stars opens a completely new arena for testing theories of gravity. We show that this measurement allows us to place stringent constraints on general scalar-tensor and vector-tensor theories, while allowing us to place an independent bound on the graviton mass in bimetric theories of gravity. These constraints severely reduce the viable range of cosmological models that have been proposed as alternatives to general relativistic cosmology.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/43004cd396a83f41f56e581f8b2fb6fb2d00ccf8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

Citations in the corpus

Gravitational wave decay into dark energy (2018, background): “The recent observations put severe bounds on this possibility and therefore strong constraints on some DE models [5, 6, 7, 8].”
A systematic approach to generalisations of General Relativity and their cosmological implications (2018, background): “If we decide to be too conservative and ignore the presence of the higher order operators, that would enter naturally from the effective field theory point of view, we can then put very restrictive bounds on the modified gravity theories [275, 276, 277, 278, 279, 280, 281, 282].”
Testing modified gravity at cosmological distances with LISA standard sirens (2019, background): “For example, the recent simultaneous detection of a gravitational and an electromagnetic signal from GW170817 [1–4], and the follow-up studies of the electromagnetic counterpart [5] impose severe constraints on theories predicting a different speed for gravitational and electromagnetic waves [6–10].”
Does the Hubble constant tension call for new physics? (2018, background): “Apart from still being viable after recent constraints on the propagation speed of gravitational radiation [30] from the detection of an electromagnetic counterpart [31] to the gravitational wave signal (GW170817) from the merger of two neutron stars [32], the theory also have properties useful as a”
Horndeski theory and beyond: a review (2019, background): “This constraint motivates us to identify the viable subclass of the Horndeski and DHOST theories as an alternative to dark energy satisfying cGW = 1 [195, 196, 197, 198, 199, 200, 201, 202] (see also [203, 204] for scalar-tensor theories that achieve cGW = 1 dynamically).”
Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA (2013, background): “…(LISA; AmaroSeoane et al. 2012, 2013) could provide early warning and sky localization (Sesana 2016), as well as additional information on system parameters (Vitale 2016), formation mechanisms (Nishizawa et al. 2016a, b; Breivik et al. 2016) and tests of general relativity (Barausse et al. 2016).”
Dark Energy in Light of Multi-Messenger Gravitational-Wave Astronomy (2018, methodology): “For Horndeski theory (5-8) this implies (Baker et al., 2017; Creminelli and Vernizzi, 2017; Ezquiaga and Zumalacárregui, 2017; Sakstein and Jain, 2017)”