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57 papers · 1 filter
Localized Oscillatory Dissipation in Magnetopause Reconnection
J. L. Burch, R. E. Ergun, P. A. Cassak +26
Data from the NASA Magnetospheric Multiscale (MMS) mission are used to investigate asymmetric magnetic reconnection at the dayside boundary between the Earth's magnetosphere and th…
A disrupted molecular torus around Eta Carinae as seen in 12CO with ALMA
Nathan Smith, Adam Ginsburg, John Bally
We present Atacama Large Millimeter Array (ALMA) observations of CO21 emission from circumstellar material around the massive star ~Carinae. These observations reveal…
The close circumstellar environment of Betelgeuse - V. Rotation velocity and molecular envelope properties from ALMA
Pierre Kervella, Leen Decin, Anita M. S. Richards +6
We observed Betelgeuse using ALMA's extended configuration in band 7 (f~340 GHz, λ~0.88 mm), resulting in a very high angular resolution of 18 mas. Using a solid body rotation mode…
Parameterizations of Chromospheric Condensations in dG and dMe Model Flare Atmospheres
Adam F. Kowalski, Joel C. Allred
The origin of the near-ultraviolet and optical continuum radiation in flares is critical for understanding particle acceleration and impulsive heating in stellar atmospheres. Radia…
Diffusion-plus-drift models for the mass leakage from centrifugal magnetospheres of magnetic hot-stars
Stanley P. Owocki, Steven R. Cranmer
In the subset of luminous, early-type stars with strong, large-scale magnetic fields and moderate to rapid rotation, material from the star's radiatively driven stellar wind outflo…
Evolution of hydromagnetic turbulence from the electroweak phase transition
Axel Brandenburg, Tina Kahniashvili, Sayan Mandal +3
We present new simulations of decaying hydromagnetic turbulence for a relativistic equation of state relevant to the early universe. We compare helical and nonhelical cases either…