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A JVLA survey of the high frequency radio emission of the massive magnetic B- and O-type stars
Sushma Kurapati, Poonam Chandra, Gregg Wade +10
We conducted a survey of seven magnetic O and eleven B-type stars with masses above using the Very Large Array in the 1cm, 3cm and 13cm bands. The survey resulted in a…
High surface magnetic field in red giants as a new signature of planet engulfment?
Giovanni Privitera, Georges Meynet, Patrick Eggenberger +6
Context. Red-giant stars may engulf planets. This may increase the rotation rate of their convective envelope, which could lead to strong dynamo-triggered magnetic fields. Aims. We…
Chandra View of Magnetically Confined Wind in HD191612: Theory versus Observations
Yael Naze, Asif ud-Doula, Svetozar A. Zhekov
High-resolution spectra of the magnetic star HD191612 were acquired using the Chandra X-ray observatory at both maximum and minimum emission phases. We confirm the flux and hardnes…
An `Analytic Dynamical Magnetosphere' formalism for X-ray and optical emission from slowly rotating magnetic massive stars
Stanley P. Owocki, Asif ud-Doula, Jon O. Sundqvist +3
Slowly rotating magnetic massive stars develop "dynamical magnetospheres" (DM's), characterized by trapping of stellar wind outflow in closed magnetic loops, shock heating from col…