English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We consider the evolution of cosmological gravitational waves inscalar-tensor theory and $F(R)$ gravity theory as typical models of themodified gravity. Although the propagation speed is not changed from the speedof light, the propagation phase changes when we compare the propagation inthese modified gravity theories with the propagation in the $\Lambda$CDM model.The phase change might be detected in future observations.

Cosmological Bound from the Neutron Star Merger GW170817 in scalar-tensor and $F(R)$ gravity theories