# LIGO Signals from the Mirror World

## TL;DR

This paper proposes that the non-observation of electromagnetic counterparts in LIGO black hole mergers can be explained if these events originate from a mirror universe where dark matter and black hole formation are more prevalent, leading to an increased merger rate.

## Contribution

It introduces the idea that black hole mergers detected by LIGO may originate from a mirror universe, explaining the lack of electromagnetic signals and predicting an increased merger rate.

## Key findings

- Mirror universe could explain LIGO black hole merger observations.
- Estimated tenfold increase in merger rate in the mirror world.
- Consistent with current LIGO data.

## Abstract

We want to explain non-observation of electromagnetic counterpart of currently confirmed ten gravitational wave signals from the black hole mergers assuming their existence 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. Totally we estimate a factor 10 amplification of black holes merging rate in mirror world with respect to our world, which is consistent with the LIGO observations.