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The radio spectra of the compact sources in Arp 220: A mixed population of supernovae and supernova remnants
Rodrigo Parra, John E. Conway, Philip J. Diamond +4
We report the first detection at multiple radio wavelengths (13, 6 and 3.6 cm) of the compact sources within both nuclei of the Ultra Luminous Infra-Red Galaxy Arp 220. We present…
Intrinsic properties of the magnetically collimated water maser jet of W43A
W. H. T. Vlemmings, P. J. Diamond
Water maser polarization observations in the precessing jet of W43A have revealed that it is magnetically collimated. Here we present a detailed description of the physical propert…
A magnetically collimated jet from the evolved star W43A
W. H. T. Vlemmings, P. J. Diamond, H. Imai
We present the first direct measurements of the magnetic field strength and direction in a collimated jet from an evolved star on its way to become a planetary nebula. Very Long Ba…
VLBI Images of 49 Radio Supernovae in Arp 220
Colin J. Lonsdale, Philip J. Diamond, Hannah Thrall +2
We have used a Very Long Baseline Interferometry (VLBI) array at 18cm wavelength to image the nucleus of the luminous IR galaxy Arp 220 at ~1 pc linear resolution, and with very hi…
A magnetically collimated jet from an evolved star
W. H. T. Vlemmings, P. J. Diamond, H. Imai
Planetary nebulae often have asymmetric shapes, which could arise due to collimated jets from evolved stars before evolution to the planetary nebula phase. The source of jet collim…