Minnie Ma (Manchester Uni)

Minnie Mao Colloquium: Here be Spiral DRAGNs

Marsfield

Abstract

In the local Universe, large-scale double-lobed radio sources are almost always
hosted by elliptical galaxies. This is consistent with leading galaxy formation
models that suggest both elliptical galaxies and extended radio sources are the
result of mergers. These models do not allow for spiral galaxies to host large-scale double-lobed radio sources. However, to-date, a handful of such sources have been observed to exist in the local Universe, including the recently discovered J1649+2635. We call these sources "spiral DRAGNs".
I will give a summary of the known properties of spiral DRAGNs, and discuss recent observational results focusing on VLBI.