# Gravitational Waves from Mirror World

## TL;DR

This paper proposes that the observed gravitational wave signals from black hole mergers could originate from a hidden mirror universe, explaining the high merger rates and lack of electromagnetic counterparts.

## Contribution

It introduces a model where mirror matter in a hidden universe accounts for gravitational wave observations, suggesting an amplification of black hole mergers by a factor of 15.

## Key findings

- Mirror universe black holes can explain high merger rates.
- LIGO signals are consistent with mirror matter sources.
- No electromagnetic counterparts due to mirror matter interactions.

## Abstract

In this paper we consider the properties of the 10 confirmed by the LIGO Collaboration gravitational wave signals from the black hole mergers. We want to explain non-observation of electromagnetic counterpart and higher then expected merging rates of these events, assuming the existence of their sources in the hidden mirror universe. Mirror matter, which interacts with our world only through gravity, is a candidate of dark matter and its density can exceed ordinary matter density five times. Since mirror world is considered to be colder, star formation there started earlier and mirror black holes had more time to pick up the mass and to create more binary systems within the LIGO reachable zone. In total, we estimate factor of 15 amplification of black holes merging rate in mirror world with respect to our world, which is consistent with the LIGO observations.