2021/03/09 by Yu Pan, Yuan He, JingZhao Qi +5
Physics and Astronomy · #Astrophysics #Baryon #Baryon acoustic oscillations #Black Holes and Theoretical Physics #COSMIC cancer database #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Einstein #Einstein Telescope #Gravitation #Gravitational wave #Large Synoptic Survey Telescope #Mathematical physics #Oscillation (cell signaling) #Physics #Pulsars and Gravitational Waves Research #Quantum gravity #Quantum mechanics #Supernova #Telescope #Theoretical physics #astro-ph.CO #f(R) gravity #gr-qc
paper · pdf · doi:10.3847/1538-4357/abebe0
10 pages, 11 figures, accepted for publication in ApJ
arxiv created 2021/03/09 · openalex publication_date 2021/04/01 · arxiv updated 2021/05/05 · openalex created_date 2021/09/13 · openalex updated_date 2026/08/05
Abstract In this paper we analyze the implications of gravitational waves (GWs) as standard sirens on the modified gravity models by using the third-generation GW detector, i.e., the Einstein Telescope. Two viable models in f ( R ) theories within the Palatini formalism are considered in our analysis ( and ), with the combination of simulated GW data and the latest electromagnetic (EM) observational data (including the recently released Pantheon type Ia supernovae sample, the cosmic chronometer data, and baryon acoustic oscillation distance measurements). Our analysis reveals that the standard siren GWs, which provide an independent and complementary alternative to current experiments, could effectively eliminate the degeneracies among parameters in the two modified gravity models. In addition, we thoroughly investigate the nature of geometrical dark energy in the modified gravity theories with the assistance of Om ( z ) and statefinder diagnostic analysis. The present analysis makes it clear-cut that the simplest cosmological constant model is still the most preferred by the current data. However, the combination of future naturally improved GW data and the most recent EM observations will reveal the consistency or acknowledge the tension between the ΛCDM model and modified gravity theories.