(Simulating) Coronal Mass Ejections in Active Stars

Abstract

The stellar magnetic field completely dominates the environment around late-type stars. It is responsible for driving the coronal high-energy radiation (e.g. EUV/X-rays), the development of stellar winds, and the generation transient events such as flares and coronal mass ejections (CMEs). While progress has been made for the first two processes, our understanding of the eruptive behavior in late-type stars is still very limited. One example of this is the fact that despite the frequent and highly energetic flaring observed in active stars, direct evidence for stellar CMEs is almost non-existent. Here we discuss realistic 3D simulations of stellar CMEs, analyzing their resulting properties in contrast with solar eruptions, and use them to provide a common framework to interpret the available stellar observations. Additionally, we present results from the first 3D CME simulations in M-dwarf stars, with emphasis on possible observable signatures imprinted in the stellar corona.

arXiv comment7 pages, 2 figures, to appear in the proceedings of the IAU Symposium 354, Solar and Stellar Magnetic Fields: Origins and Manifestations. Eds: A. Kosovichev, K. Strassmeier, M. Jardine; based on an invited talk

References in corpus (39)

• The stellar activity-rotation relationship and the evolution of stellar dynamos
• Magnetic fields of non-degenerate stars
• Global Energetics of Thirty-Eight Large Solar Eruptive Events
• Alfven Wave Solar Model (AWSoM): Coronal Heating
• The stellar rotation--activity relationship in fully convective M dwarfs
• Magnetic Cycles and Rotation Periods of Late Type Stars from photometric time series
• Sun-as-a-star Observation of White-Light Flares
• MHD Waves and Coronal Heating: Unifying Empirical and MHD Turbulence Models
• Three-Dimensional MHD Simulation of the 2003 October 28 Coronal Mass Ejection: Comparison with LASCO Coronagraph Observations
• Suppression of Coronal Mass Ejections in active stars by an overlying large-scale magnetic field: A numerical study
• Implications of mass and energy loss due to coronal mass ejections on magnetically-active stars
• Flares from small to large: X-ray spectroscopy of Proxima Centauri with XMM-Newton
• Mass loss in pre-main sequence stars via coronal mass ejections and implications for angular momentum loss
• The Stellar CME-flare relation: What do historic observations reveal?
• A stellar flare-coronal mass ejection event revealed by X-ray plasma motions
• Optical, UV, and X-Ray Evidence for a 7-Year Stellar Cycle in Proxima Centauri
• The quest for stellar coronal mass ejections in late-type stars: I. Investigating Balmer-line asymmetries of single stars in Virtual Observatory data
• Data Constrained Coronal Mass Ejections in A Global Magnetohydrodynamics Model
• Extended MHD modeling of the steady solar corona and the solar wind
• Causes of an AD 774-775 14C increase
• Chromosphere to 1 AU Simulation of the 2011 March 7th Event: A Comprehensive Study of Coronal Mass Ejection Propagation
• Flare Heating in Stellar Coronae
• Long-term magnetic field monitoring of the Sun-like star ξBootis A
• Stellar Coronal Mass Ejections I. Estimating occurrence frequencies and mass-loss rates
• Constraining Stellar Coronal Mass Ejections Through Multi-Wavelength Analysis of the Active M Dwarf EQ Peg
• A search for flares and mass ejections on young late-type stars in the open cluster Blanco-1
• X-ray Flares in Orion Low Mass Stars
• Magnetic cycles in a dynamo simulation of fully convective M-star Proxima Centauri
• Coronal response to magnetically-suppressed CME events in M-dwarf stars
• A Monster CME Obscuring A Demon Star Flare
• The Search for Signatures Of Transient Mass Loss in Active Stars
• Activity and Magnetic Field Structure of the Sun-Like Planet Hosting Star HD 1237
• Simultaneous Kepler/K2 and XMM-Netwon observations of superflares in the Pleiades
• A spectro-polarimetric study of the planet-hosting G dwarf, HD 147513
• Stellar energetic particles in the magnetically turbulent habitable zones of TRAPPIST-1-like planetary systems
• Stellar flares and the dark energy of CMEs
• The Grand Aurorae Borealis Seen in Colombia in 1859
• X-ray Flares of EV Lac: Statistics, Spectra, Diagnostics
• Magnetic Fields in Low-mass Stars: An Overview of Observational Biases