Arbitrary amplitude solitary waves and double layers in an ultra-relativistic degenerate dense dusty plasma

Details Arbitrary amplitude solitary waves and double layers in an ultra-relativistic degenerate dense dusty plasma Arbitrary amplitude solitary waves and double layers in an ultra-relativistic degenerate dense dusty plasma

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010phla..374.4238m&link_type=abstract

Physics Letters A, Volume 374, Issue 41, p. 4238-4241.

Physics

12

Scientific paper

Arbitrary amplitude solitary waves (SWs) and double layers (DLs) in an ultra-relativistic degenerate dense dusty plasma (containing ultra-relativistic degenerate ultra-cold electron fluid, inertial ultra-cold ion fluid, and negatively charged static dust) have been investigated by the pseudo-potential approach. It has been found that for δ=1 (where δ is the ratio of nonlinear wave speed to linear wave phase speed) extremely large amplitude DLs with negative potential exist for μ=0.537 (where μ is the ratio of dust charge density to ion charge density) and SWs with negative potential exist for 1>μ>0.537. It is also shown that for δ>1 only SWs with positive potential exist for 0⩾μ<0.537, but SWs with positive potential coexist with SWs or DLs with a negative potential for 0.537>μ>0.851. The implications of our results in some compact astrophysical objects, particularly, in white dwarfs and neutron stars, have been briefly discussed.

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