Parsec-Scale Radio Emission from The Low-Luminosity AGN in the Dwarf Starburst Galaxy Henize 2-10

Astronomy and Astrophysics – Astronomy

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Scientific paper

A candidate accreting massive black hole has recently been identified at the center of the vigorously star-forming, bulgeless dwarf galaxy, Henize 2-10. We present VLBI observations of Henize 2-10 at 1.4 GHz taken with the Long Baseline Array, and clearly detect parsec-scale radio emission at the precise location of the putative black hole. We also detect a second compact radio source away from the nucleus that is spatially coincident with a young massive super star cluster and almost certainly related to supernova activity. The observations presented here, in combination with multi-wavelength ancillary data, support the case for a low-luminosity active galactic nucleus in this dwarf starburst galaxy.

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