Brans-Dicke gravity and the capture of stars by black holes: some asymptotic results

TL;DR

This paper investigates differences in gravitational radiation during star capture by black holes within Brans-Dicke theory compared to general relativity, highlighting effects due to non-stationary black hole states.

Contribution

It identifies a novel feature of gravitational radiation in Brans-Dicke theory caused by non-stationary black holes, contrasting with predictions from general relativity.

Findings

Distinct gravitational radiation signatures in Brans-Dicke theory.

Non-stationary black hole states influence gravitational wave emission.

Differences challenge Hawking's theorem assumptions.

Abstract

In the context of star capture by a black hole, a new noticeable difference between Brans-Dicke theory and general relativity gravitational radiation is pointed out. This feature stems from the non-stationarity of the black hole state, barring Hawking's theorem.