Linking tests of gravity on all scales: From the strong-field regime to cosmology
Date
2015ISSN
0004-637XSource
Astrophysical JournalVolume
802Issue
1Google Scholar check
Keyword(s):
Metadata
Show full item recordAbstract
The current effort to test general relativity (GR) employs multiple disparate formalisms for different observables, obscuring the relations between laboratory, astrophysical, and cosmological constraints. To remedy this situation, we develop a parameter space for comparing tests of gravity on all scales in the universe. In particular, we present new methods for linking cosmological large-scale structure, the cosmic microwave background, and gravitational waves with classic PPN tests of gravity. Diagrams of this gravitational parameter space reveal a noticeable untested regime. The untested window, which separates small-scale systems from the troubled cosmological regime, could potentially hide the onset of corrections to GR. © 2015. The American Astronomical Society. All rights reserved.