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The same kind of large-scale planetary waves that meander through the atmosphere high above Earth's surface may also exist on the Sun, according to a new study led by a scientist at the National Cente...
Dipole Collapse and Dynamo Waves in Global Direct Numerical Simulations
Dipole Collapse Dynamo Waves Global Direct Numerical Simulations
2012/2/23
Magnetic fields of low-mass stars and planets are thought to originate from self-excited dynamo action in their convective interiors. Observations reveal a variety of field topologies ranging from lar...
Are gravitational waves from giant magnetar flares observable?
gravitational giant magnetar observable
2011/10/18
Are giant flares in magnetars viable sources of gravitational radiation? Few theoretical studies have been concerned with this problem, with the small number using either highly idealized models or as...
Spatial Damping of Linear Compressional Magnetoacoustic Waves in Quiescent Prominences
Sun: prominences oscillations magnetohydrodynamics radiation thermal
2010/9/17
We study the spatial damping of magnetoacoustic waves in an unbounded quiescent prominence invoking the technique of MHD seismology. We consider Newtonian radiation in the energy equation and derive a...
Astronomers could be on the cusp of detecting gravitational waves after four decades of trying, according to a team of Polish astrophysicists. They say that if current gravitational-wave detectors are...
Oblique Propagation and Dissipation of Alfvén Waves in Coronal Holes
Sun Alfv´ en waves coronal holes solar wind
2009/5/12
We investigate the effect of viscosity and magnetic diffusivity
on the oblique propagation and dissipation of Alfv´en waves with respect
to the normal outward direction, making use of MHD equa...
Spatial Damping of Linear Compressional Magnetoacoustic Waves in Quiescent Prominences
Sun:prominences oscillations magnetohydrodynamicsradiation:thermal
2009/5/7
We study the spatial damping of magnetoacoustic waves in an unbounded quiescent prominence invoking the technique of MHD seismology. We consider Newtonian radiation in the energy equation and derive a...
Numerical Simulations of Kinetic Alf ´v en Waves to Study Spectral Index in Solar Wind Turbulence and Particle Heating
Kinetic Alfv´ en wave: filamentation solar wind spectral index chaotic structure
2009/5/6
We present numerical simulations of the modified nonlinear
Schr¨odinger equation satisfied by kinetic Alfv´en waves (KAWs) leading
to the formation of magnetic filaments at different times. Th...
PROPAGATION OF HIGH FREQUENCY WAVES IN THE QUIET SOLAR ATMOSPHERE
SUN:oscillations-SUN atmosphere
2009/2/5
High-frequency waves (5 mHz to 20 mHz) have previously been
suggested as a source of energy accounting for partial heating of the quiet solar
atmosphere. The dynamics of previously detected high-fre...
May 29, 2007，Sound waves escaping the sun’s interior create fountains of hot gas that shape and power a thin region of the sun’s atmosphere which appears as a ruby red "ring of fire" around the moon d...
Oblique Propagation and Dissipation of Alfvén Waves in Coronal Holes
Sun Alfv´ en waves coronal holes solar wind
2010/9/16
We investigate the effect of viscosity and magnetic diffusivity on the oblique propagation and dissipation of Alfv´en waves with respect to the normal outward direction, making use of MHD equati...