Bibcode
Russell, D. M.; Yang, Y.-J.; Gladstone, J. C.; Wiersema, K.; Roberts, T. P.
Referencia bibliográfica
Astronomische Nachrichten, Vol.332, Issue 4, p.371
Advertised on:
5
2011
Número de citas
14
Número de citas referidas
13
Descripción
New optical narrowband imaging observations of the fields of several
ultra-luminous X-ray sources (ULXs) are presented. Known supershell
nebulae are associated with a number of these ULXs, which we detect in
emission lines filters such as [S II], He II, [O II] and [O III]. New
nebulae are discovered, which are candidate ULX-powered supershells. The
morphologies and emission line fluxes of these nebulae could then be
used to infer the properties of the emitting gas, which gives clues to
the energizing source (photoionization and/or shock-excitation, both
possibly from the ULX). Studies of supershells powered by ULXs can help
to constrain the nature of ULXs themselves, such as the isotropy of the
X-ray emission and the strength of their outflows.