Balzan et al. present radio continuum observations of the nearby
spiral galaxy NGC 2082 using the ASKAP, ATCA and Parkes telescopes.
The 888 MHz ASKAP data revealed a bright and compact radio source,
J054149.24– 641813.7, of unknown origin, some 20 arcsec from the
centre of the galaxy. Follow-up Parkes and ATCA data were used to
constrain the nature of the source, with potential origins as a
supernova remnant or persistent radio source associated with Fast
Radio Bursts determined to be unlikely. The authors conclude that the
most likely origin for J054149.24–641813.7 is a background quasar or
radio galaxy. The image above is a 3-colour HST image of NGC 2082
overlaid with ASKAP and ATCA contours. The blue contours are ASKAP 888
MHz (0.3, 0.5, 0.7, 0.9, 1.3, 1.4, 2.1 mJy/beam), and the light-blue,
orange and red contours are ATCA 2100 MHz (0.4, 1.0, 1.5 mJy/beam),
5500 MHz (0.5, 1.0, 1.5 mJy/beam), and 9000 MHz (0.4346, 1.5198, 3.0,
3.4 mJy/beam) respectively. The inset image in the bottom-left
provides a zoom-in of J054149.24–641813.7, showing the absence of any
optical counterpart. The subplot in the top-right provides a zoom-in
of a 888 MHz flux density peak. The magenta triangle denotes the
position of SN1992ba.
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