Dislocations in Magnetohydrodynamic Waves in a Stellar Atmosphere

Bibcode
2013PhRvL.111h1103L
DOI
10.1103/PhysRevLett.111.081103
López Ariste, A.; Collados, M.; Khomenko, E.
Bibliographical reference

Physical Review Letters, vol. 111, Issue 8, id. 081103

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8
2013
Journal
Physical Review Letters
Number of authors
3
IAC number of authors
2
Citations
10
Refereed citations
7
Description
We describe the presence of wave front dislocations in magnetohydrodynamic waves in stratified stellar atmospheres. Scalar dislocations such as edges and vortices can appear in Alfvén waves, as well as in general magnetoacoustic waves. We detect those dislocations in observations of magnetohydrodynamic waves in sunspots in the solar chromosphere. Through the measured charge of all the dislocations observed, we can give for the first time estimates of the modal contribution in the waves propagating along magnetic fields in solar sunspots.
Related projects
Project Image
Solar and Stellar Magnetism
Magnetic fields are at the base of star formation and stellar structure and evolution. When stars are born, magnetic fields brake the rotation during the collapse of the mollecular cloud. In the end of the life of a star, magnetic fields can play a key role in the form of the strong winds that lead to the last stages of stellar evolution. During
Tobías
Felipe García
In progress
Type
Refereed
Solar Physics (FS)
Stellar atmospheres
Radiative transfer

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