Magneto-acoustic wave propagation in the solar atmosphere: tilted magnetic field ($\theta=-30^°$)
Natural Sciences (Astrophysics and Astrononmy)
1634 views
Date of upload:
13.03.2015
Co-author:
M. Roth, O. Steiner
Caption:
Evolution of the velocity perturbation scaled with the square root of the density, $\rho^{1/2}\delta |v|$, for the scenario of a tilted magnetic field with $\theta= -30^°$. The horizontal line shows the equipartition level, where the sound speed equals the Alfven speed, $c_\mathrm{s}=c_\mathrm{A}$. The tilted lines represent magnetic fi eld lines.
Magneto-acoustic wave propagation in the solar atmosphere: vertical magnetic field ($\theta=-30^°$), disturbance $\delta B$
Natural Sciences (Astrophysics and Astrononmy)
1774 views
Date of upload:
13.03.2015
Co-author:
M. Roth, O. Steiner
Caption:
Magnetic field perturbations, $\delta B/B_0$, for di fferent time steps and for the scenario of a vertical magnetic fi eld. The magneto-acoustic wave propagates from the source (piston) located at (x; z) = (1000;-750) km. The horizontal line shows the equipartition level, where the sound speed equals the Alfven speed, $c_\mathrm{s}=c_\mathrm{A}$. The vertical lines represent magnetic field lines.
Simulation of a spherical magneto-acoustic wave propagating in the solar atmosphere: interaction with magnetic canopy, $\delta v$
Natural Sciences (Astrophysics and Astrononmy)
2116 views
Date of upload:
13.03.2015
Co-author:
M. Roth, O. Steiner
Caption:
The spherical magneto-acoustic wave is excited right beneath the magnetic canopy. The color map shows the velocity perturbations $\delta |v|$. The green contours display the equipartition level, where $c_\mathrm{s} =c_\mathrm{A}$.
Simulation of a spherical magneto-acoustic wave propagating in the solar atmosphere: interaction with magnetic canopy, $\delta B$
Natural Sciences (Astrophysics and Astrononmy)
1629 views
Date of upload:
13.03.2015
Co-author:
Caption:
The spherical magneto-acoustic wave is excited right beneath the magnetic canopy. The color map shows the magnetic field perturbations $\delta B$. The fast magnetic mode in the low regime is supported
by magnetic forces, causing signi cant perturbations of the magnetic field.The green contours display the equipartition level, where $c_\mathrm{s} =c_\mathrm{A}$.
