Radio light curves and imaging of the helium nova V445 Puppis reveal seven years of synchrotron emission
M. M. Nyamai, L. Chomiuk, V. A. R. M. Ribeiro, P. A. Woudt, J. Strader, and K. V. Sokolovsky
V445 Puppis is the only helium nova observed to date; its eruption in late 2000 showed high velocities up to 8500 km s-1, and a remarkable bipolar morphology cinched by an equatorial dust disc. Here we present multi-frequency radio observations of V445 Pup obtained with the Very Large Array (VLA) spanning 1.5-43.3 GHz, and between 2001 January and 2008 March (days ∼89-2700 after eruption).
The radio light curve is dominated by synchrotron emission over these 7 yr, and shows four distinct radio flares.
To find out more, check out the paper at: https://ui.adsabs.harvard.edu/abs/2021MNRAS.501.1394N/abstract