
S. no.  Items  GES stability analysis  MHD stability analyses 

1  Model  Ideal hydrodynamic  MHD 

2  Plasmaboundary wall interaction and sheath formation mechanism  Included  Neglected 

3  Effect of charge separation  Considered  Not considered 

4  Floating surface (at which no net electric current)  Involved  Not involved 

5  Magnetic field  Not considered
 Considered 

6  Description  Twoscale (SIP and SWP)  One scale (SWP) 

7  Sonic range  Subsonic (SIP) and supersonic (SWP)  Supersonic (SWP) 

8  Selfgravity (SIP) and external gravity (SWP)  Considered  Not considered 

9  Transonic transition (subsonic to supersonic)  Involved (through SIP and SSB interaction process and thus transformed into SWP)  Not involved 

10  Analytical solution  Bounded (SIP)  Unbounded (SWP) 

11  Thermal species  Maxwellian  Single fluid (MHD) 

12  Surface description and specification  Yes (at ) and it is negatively biased (with kV) at the cost of thermal loss of SIP electrons  Not precisely, but the diffused surface is electrically uncharged and unbiased 

13  Source of nonlinearity  Plasma fluidity  Largescale dynamics 

14  Source of dispersion  Deviation from quasineutrality and selfgravity  Geometrical effect (also, some part of physical effect) 

15  Source of dissipation  Weak collisional effects  Viscosity and magnetic diffusion 

16  Sun and SWP coupling  Considered  Not considered 

17  Nature of solutions  Mainly shocklike structures in the lowest ordered perturbed GES potential  Soliton and shocklike structures in the lowest ordered perturbed density and velocity 

18  Solar atmosphere  Not stratified  Stratified (into a number of heliocentric layers) 

19  Adopted technique  Standard reductive perturbation technique (about the GES equilibrium)  Standard multiple scaling technique (about the MHD equilibrium) 

20  Convection and circulation dynamics  Not treated (for idealized simplicity)  Treated 

21  Leakage process  Taken into account  Not taken into account 

22  Main application  Surface origin of the subsonic SWP and its transonic flow dynamics  Solar chromospheric and coronal heating 
