Evidence for Alfvén Waves in Solar Polar Jets
نویسندگان
چکیده
J. W. Cirtain, L. Golub, L. Lundquist, A. van Ballegooijen, A. Savcheva, M. Shimojo, E. DeLuca, S. Tsuneta, T. Sakao, K. Reeves, M. Weber, R. Kano, N. Narukage, K. Shibasaki 1 Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 Nobeyama Solar Radio Observatory, Nobeyama, Nagano, 384-1305 National Astronomical Observatory of Japan, Mitaka, Tokyo, 181-8588 ISAS, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa, 229-8510
منابع مشابه
Coronal Jets Simulated with the Alfvén Wave Solar Model
In this paper we carry out numerical modeling of coronal jets to understand their effects on the global corona and their contribution to the solar wind. We simulated jet models implemented within a well established three dimensional, two-temperature magneto-hydrodynamic (MHD) solar corona model that is built upon kinetic Alvén wave dissipation, producing realistic solar wind background. The jet...
متن کاملThe role Alfvén waves in the generation of Earth polar auroras
The acceleration of electrons at 1-10 keV energies is the cause of the polar aurora displays, and an important factor of magnetic energy transfer from the solar wind to the Earth. Two main families of acceleration processes are observed: those based on coherent quasi-static structures called double layers, and those based of the propagation of Alfvén Waves (AW). This paper is a review of the Al...
متن کاملGiant Chromospheric Anemone Jet observed with Hinode and Comparison with Magnetohydrodynamic Simulations: Evidence of Propagating Alfvén Waves and Magnetic Reconnection
Hinode discovered a beautiful giant jet with both cool and hot components at the solar limb on 2007 February 9. Simultaneous observations by the Hinode SOT, XRT, and TRACE 195 Å satellites revealed that hot (∼ 5 × 10 K) and cool (∼ 10 K) jets were located side by side and that the hot jet preceded the associated cool jet (∼ 1 − 2 min.). A current-sheet-like structure was seen in optical (Ca II ...
متن کاملAssociation of Alfvén waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polar
Two magnetic hole events observed by Polar on 20 May 1996 when it was in the polar cap/polar cusp boundary layer are studied. Low-frequency waves, consisting of nonlinear Alfvén waves and large amplitude (±14 nT peakto-peak) obliquely propagating proton cyclotron waves (with frequency f ∼0.6 to 0.7fcp), accompanied by electric bipolar pulses (electron holes) and electron heating have been obser...
متن کاملSolar coronal electron heating by short-wavelength dispersive shear Alfvén waves
The electron heating of the solar coronal plasma has remained one of the most important problems in solar physics. An explanation of the electron heating rests on the identification of the energy source and appropriate physical mechanisms via which the energy can be channelled to the electrons. Our objective here is to present an estimate for the electron heating rate in the presence of finite ...
متن کامل