D-day 0 C O N T A C T S
REGISTRATION
PERSONAL INFORMATION
Submission Time: 2017-06-18 01:10:58 UTC


Email: alexye7@gmail.com
First Name: Alemayehu
Middle Name: Mengesha
Last Name: Cherkos
Name as it appears on badge : Alemayehu Mengesha Cherkos
Affiliation: Addis Ababa University
Nationality: Ethiopia
Degree: Master


Preferred Working Group 1st Choice: WG 6 (Solar Energetic Particles)
Preferred Working Group 2nd Choice: WG 1 (Data)


PRESENTATION
Title : Gravitational instability on propagation of MHD waves in astrophysical plasma
Abstract
We determine the general dispersion relation for the propagation of magnetohydrodynamic (MHD) waves in astrophysical plasma by considering the effect of gravitational instability and viscosity with anisotropic pressure tensor and heat-conducting plasma. Basic MHD equations have been derived and linearized by the method of perturbation to develop the general form of dispersion relation equation. Our result indicates that the transverse propagation of waves in such a plasma is affected by the inclusion of heat conduction. For wave propagation, parallel to the magnetic field direction, we find that the fairhose mode is unaffected, whereas the mode corresponding to the gravitational instability is modified in astrophysical plasma with anisotropic pressure tensor being stable in the presence of viscosity and strong magnetic field at considerable wavelength.

Gravitational instability on propagation of MHD waves in astrophysical plasma. Available from: https://www.researchgate.net/publication/259436386_Gravitational_instability_on_propagation_of_MHD_waves_in_astrophysical_plasma [accessed Jun 18, 2017].


LUNCH
Sep. 18, Sep. 19, Sep. 20, Sep. 21, Sep. 22

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