Effect of plasma composition on magnetized outflows. Issue 3 (16th April 2019)

• Record Type: Journal Article
• Authors: Singh, Kuldeep; Chattopadhyay, Indranil
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 486:Issue 3(2019)
• Page Start: 3506
• Page End: 3516
• Publication Date: 2019-04-16
• Subjects: MHD -- stars: black holes -- stars: neutron -- ISM: jets and outflows -- galaxies:jets; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stz1072
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: In this paper, we study magnetized winds described by variable adiabatic index equation of state in Paczyński & Wiita pseudo-Newtonian potential. We identify the flow solutions with the parameter space of the flow. We also confirm that the physical wind solution is the one which passes through the slow, Alfvén, and fast critical points. We study the dependence of the wind solution on the Bernoulli parameter E and the total angular momentum L . The adiabatic index, which is a function of temperature and composition, was found to be variable in all the outflow solutions. For the same values of the Bernoulli parameter and the total angular momentum, a wind in strong gravity is more accelerated, compared to a wind in Newtonian gravity. We show that flow variables such as the radial and azimuthal velocity components and temperature all depend on the composition of the flow. Unlike the outflow solutions in hydrodynamic regime, the terminal speed of a magnetically driven wind also depends on the composition parameter.