J2102+6015: a potential distant multimessenger?

TL;DR

This paper investigates J2102+6015, a high-redshift source with unusual VLBI properties, potentially indicating a supermassive black hole binary emitting both electromagnetic and gravitational waves.

Contribution

It presents the first detailed analysis suggesting J2102+6015 as a rare high-redshift supermassive black hole binary candidate with multimessenger emission potential.

Findings

Unusual imaging and astrometric VLBI properties observed.

Possible identification as a supermassive black hole binary.

Potential as a distant multimessenger source.

Abstract

We present and briefly discuss results of several studies of the source J2102+6015 with tentatively defined redshift z=4:575 which demonstrates unusual properties in imaging and astrometric VLBI observations. Its properties might be considered as indications on the supermassive black hole binary which can be considered as a so far rare example of a high-redshift source of known electromagnetic and, possibly, predictable gravitational wave emissions.