Possible observation sequences of Brans-Dicke wormholes

TL;DR

This paper explores the observational signatures of Brans-Dicke wormholes, focusing on accretion flux and impact parameters, and compares them with black holes and GR wormholes to identify potential observational differences.

Contribution

It provides the first detailed analysis of observable features of Brans-Dicke wormholes, highlighting their similarities and differences with other compact objects.

Findings

Brans-Dicke wormholes are similar to Schwarzschild black holes in many aspects.

Accretion energy flux from Brans-Dicke wormholes differs by about one order of magnitude from GR wormholes.

Maximum impact parameter may allow observational distinction of wormholes through light source analysis.

Abstract

The purpose of this study is to investigate observational features of Brans-Dicke wormholes in a case if they exist in our Universe. The energy flux from accretion onto a Brans-Dicke wormhole and the so-called "maximum impact parameter" are studied (the last one might allow to observe light sources through a wormhole throat). The computed values were compared with the corresponding ones for GR-wormholes and Schwarzschild black holes. We shown that Brans-Dicke wormholes are quasi-Schwarzschild objects and should differ from GR wormholes by about one order of magnitude in the accretion energy flux.