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Model of a fluxtube with a twisted magnetic field in the stratified solar atmosphere

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dc.contributor.author Sen, Samrat
dc.contributor.author Mangalam, A
dc.date.accessioned 2020-11-19T14:00:53Z
dc.date.available 2020-11-19T14:00:53Z
dc.date.issued 2018-01-15
dc.identifier.citation Advances in Space Research, Vol. 61, No. 2, pp. 617-627 en_US
dc.identifier.issn 0273-1177
dc.identifier.uri http://prints.iiap.res.in/handle/2248/7287
dc.description Restricted Access © Elsevier B.V https://doi.org/10.1016/j.asr.2017.05.032 en_US
dc.description.abstract We build a single vertical straight magnetic fluxtube spanning the solar photosphere and the transition region which does not expand with height. We assume that the fluxtube containing twisted magnetic fields is in magnetohydrostatic equilibrium within a realistic stratified atmosphere subject to solar gravity. Incorporating specific forms of current density and gas pressure in the Grad–Shafranov equation, we solve the magnetic flux function, and find it to be separable with a Coulomb wave function in radial direction while the vertical part of the solution decreases exponentially. We employ improved fluxtube boundary conditions and take a realistic ambient external pressure for the photosphere to transition region, to derive a family of solutions for reasonable values of the fluxtube radius and magnetic field strength at the base of the axis that are the free parameters in our model. We find that our model estimates are consistent with the magnetic field strength and the radii of Magnetic bright points (MBPs) as estimated from observations. We also derive thermodynamic quantities inside the fluxtube. en_US
dc.language.iso en en_US
dc.publisher Elsevier B.V en_US
dc.subject Magnetohydrostatics en_US
dc.subject Sun: photosphere en_US
dc.subject Sun: transition region en_US
dc.subject Magnetohydrodynamics (MHD) en_US
dc.subject Sun: magnetic fields en_US
dc.title Model of a fluxtube with a twisted magnetic field in the stratified solar atmosphere en_US
dc.type Article en_US


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