Magnetic field line braiding in the solar atmosphere. Issue Volume 12:Issue S327(2016) (12th September 2017)

• Record Type: Journal Article
• Authors: Candelaresi, S.; Pontin, D. I.; Hornig, G.
• Editors: Vargas Domínguez, S.; Kosovichev, A.G.; Antolin, P.; Harra, L.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 12:Issue S327(2016)
• Page Start: 77
• Page End: 81
• Publication Date: 2017-09-12
• Subjects: Sun: photosphere, -- Sun: magnetic fields, -- Sun: sunspots, -- magnetic reconnection, -- magnetohydrodynamics (MHD), -- plasmas; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921317001818
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Using a magnetic carpet as model for the near surface solar magnetic field we study its effects on the propagation of energy injectected by photospheric footpoint motions. Such a magnetic carpet structure is topologically highly non-trivial and with its magnetic nulls exhibits qualitatively different behavior than simpler magnetic fields. We show that the presence of magnetic fields connecting back to the photosphere inhibits the propagation of energy into higher layers of the solar atmosphere, like the solar corona. By applying certain types of footpoint motions the magnetic field topology is is greatly reduced through magnetic field reconnection which facilitates the propagation of energy and disturbances from the photosphere.