Some properties of strong dispersive Alfven waves. 3. Hydrodynamics (very low, intermediate and low pressure plasma)

1Malovichko, PP
1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kinemat. fiz. nebesnyh tel (Online) 2014, 30(4):58-
Start Page: Space Physics
Language: Russian

The behaviour of strong dispersive Alfven waves (SDAW) is investigated in hydrodynamic approximation, including inertial and kinetic Alfven waves, in very low, intermediate and low pressure astrophysical plasma. A new full solution is obtained. Our results are analyzed and compared with the results for the kinetic approach. It is shown that, as opposed to kinetic approach, in the framework of hydrodynamic one, in a very low, intermediate and low pressure plasma one general solution for SDAW can be obtained. In a very low damping region, kinetic and hydrodynamic solutions agree very well, but there are parameter regions where the solutions are essentially different. The influence of astrophysical environment parameters on the SDAW behaviour and properties is analyzed. All of the main wave characteristics, namely, dispersion, damping, polarization, density perturbation, charge density perturbation, are obtained. Their consideration is very importantfor observations and detection of these waves as well as for more correct understanding of the behaviour and role of such waves in various astrophysical processes of cosmic environment.

Keywords: Alfven waves, plasma

1.P. P. Malovichko, “Properties of dispersive Alfvén waves: 1. Kinetics (very low, intermediate, and low density plasmas),” Kinematics Phys. Celestial Bodies 29, 269–284 (2013).

2.P. P. Malovichko, “Properties of dispersive Alfvén waves: 2. Kinetics (finite and high density plasmas),” Kinematics Phys. Celestial Bodies 30, 22–31 (2014).

3.P. A. Bespalov and V. G. Misonova, “Formation of density cavities with a nonstationary electric field in the zone of auroral field-aligned currents,” Geomagn. Aeron. 51, 483–491 (2011).

4.N. H. Bian, E. P. Kontar, and J. C. Brown, “Parallel electric field generation by Alfvén wave turbulence,” Astron. Astrophys. 519, A114 (2010).

5.J. Birn, A. V. Artemyev, D. N. Baker, et al., “Particle acceleration in the magnetotail and aurora,” Space Sci. Rev. 173, 49–102 (2012).

6.B. D. G. Chandran, B. Li, B. N. Rogers, et al., “Perpendicular ion heating by low-frequency Alfvén-wave turbulence in the solar wind,” Astrophys. J. 720, 503–515 (2010).

7.V. Chandu, E. S. Devi, R. Jayapal, et al., “The influence of negatively charged heavy ions on the kinetic Alfven wave in a cometary environment,” Astrophys. Space Sci. 339, 157–164 (2012).

8.N. F. Cramer, The Physics of Alfvén Waves (Wiley, Berlin, 2001).

9.S. R. Cranmer and A. A. van Ballegooijen, “Alfvénic turbulence in the extended solar corona: Kinetic effects and proton heating,” Astrophys. J. 594, 573–591 (2003).

10.J. V. Hollweg, “Kinetic Alfvén wave revisited,” J. Geophys. Res. 104(A7), 14811–14819 (1999).

11.S. Kumar, “Nonlinear evolution of inertial Alfvén wave turbulence,” Astrophys. Space Sci. 337, 645–650 (2012).

12.K. G. McClements and L. Fletcher, “Inertial Alfvén wave acceleration of solar flare electrons,” Astrophys. J. 693, 1494–1499 (2009).

13.O. G. Onishchenko, O. A. Pokhotelov, R. Z. Sagdeev, et al., “Generation of convective cells by kinetic Alfvén waves in the upper ionosphere,” J. Geophys. Res. 109(A3), A03306 (2004).

14.H. D. Singh and R. P. Sharma, “Transient evolution of nonlinear localized coherent structures of kinetic Alfvén waves,” Sol. Phys. 243, 219–229 (2007).

15.K. Stasiewicz, C. E. Seyler, F. S. Mozer, et al., “Magnetic bubbles and kinetic Alfvén waves in the high-latitude magnetopause boundary,” J. Geophys. Res. 106(A12), 29503–29514 (2001).

16.X. Wang, A. Bhattacharjee, and Z. W. Ma, “Collisionless reconnection: Effects of Hall current and electron pressure gradient,” J. Geophys. Res. 105(A12), 27633–27648 (2000).

17.X.-G. Wang, L.-W. Ren, J.-Q. Wang, and C.-J. Xiao, “Synthetic solar coronal heating on current sheets,” Astrophys. J. 694, 1595–1601 (2009).

18.S. Whitelam, J. M. A. Ashbourn, R. Bingham, et al., “Alfvén wave heating and acceleration of plasmas in the solar transition region producing jet-like eruptive activity,” Sol. Phys. 211, 199–219 (2002).

19.D. J. Wu and C. Fang, “Coronal plume heating and kinetic dissipation of kinetic Alfvén waves,” Astrophys. J. 596, 656–662 (2003).

20.J. S. Zhao, D. J. Wu, and J. Y. Lu, “Kinetic Alfvén waves excited by oblique magnetohydrodynamic Alfven waves in coronal holes,” Astrophys. J. 735, 114 (2011).