Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: LIGO Signals from the Mirror World   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.

26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas