36 citations · 201 across the 10 of their papers we have counts for
4 papers · 1 filter
Mass loss on the red giant branch: plasmoid-driven winds above the RGB bump
D. J. Mullan, J. MacDonald
The onset of cool massive winds in evolved giants is correlated with an evolutionary feature on the red giant branch known as the bump. Also at the bump, shear instability in the s…
The Mass-Activity relationships in M and K dwarfs. I. Stellar parameters of our sample of M and K dwarfs
Eric R. Houdebine, D. J. Mullan, J. G. Doyle +3
Empirical correlations between stellar parameters such as rotation or radius and magnetic activity diagnostics require estimates of the effective temperatures and the stellar radii…
The umbral--penumbral boundary in sunspsots in the context of magneto-convection
D. J. Mullan, J. MacDonald
Jurcak et al (2018) have reported that, in a sample of more than 100 umbral cores in sunspots, the umbral-penumbral boundary (UPB) is characterized by a remarkably narrowly-defined…
Origin of radio-quiet coronal mass ejections in flare stars
D. J. Mullan, R. R. Paudel
Type II radio bursts are observed in the Sun in association with many coronal mass ejections (CME's. In view of this association, there has been an expectation that, by scaling fro…