28 citations · 97 across the 9 of their papers we have counts for
Showing astro-ph.GAShow all
3 papers · 1 filter
astro-ph.GA2013★ 7 cited
The bow-shock and high-speed jet in the faint, 40 arcmin diameter, outer halo of the evolved Helix planetary nebula (NGC 7293)
John Meaburn, Panos Boumis, Stavros Akras
In previous, very deep, optical images of NGC 7293 both a feature that has the morphology of a bow-shock and one with that of a jet were discovered in the faint 40 arcmin diameter…
astro-ph.GA2013★ 12 cited
The expansion proper motions of the extraordinary giant lobes of the planetary nebula KjPn 8 revisited
Panos Boumis, John Meaburn
The primary aim is to establish a firm value for the distance to the extraordinary planetary nebula KjPn 8. Secondary aims are to measure the ages of the three giant lobes of this…
astro-ph.GA2009★ 14 cited
Flows along cometary tails in the Helix planetary nebula NGC 7293
John Meaburn, Panos Boumis
Previous velocity images which reveal flows of ionized gas along the most prominent cometary tail (from Knot 38) in the Helix planetary nebula are compared with that taken at optic…