A synchrotron superbubble in the IC 10 Galaxy: a hypernova remnant?

TL;DR

This paper investigates the origin of the synchrotron superbubble in IC 10, proposing a hypernova remnant as the most plausible cause, supported by gas kinematics, emission spectra, and radio data, suggesting a black hole remnant.

Contribution

It introduces the hypernova scenario as the primary formation mechanism for the superbubble, contrasting with previous multiple supernova models.

Findings

Hypernova explosion is a more plausible origin than multiple supernovae.

The superbubble's properties are consistent with a hypernova remnant.

The remnant may be associated with the X-ray binary X-1, an accreting black hole.

Abstract

The nature of the synchrotron superbubble in the IC 10 galaxy is discussed using the results of our investigation of its ionized gas structure, kinematics, and emission spectrum from observations made with the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences, and based on our analysis of the radio emission of the region. The hypernova explosion is shown to be a more plausible mechanism of the formation of the synchrotron superbubble compared with the earlier proposed model of multiple supernova explosions. A compact remnant of this hypernova may be identified with the well known X-ray binary X-1 -- an accreting black hole.