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63 papers · 1 filter
Reconnectionless CME eruption: putting the Aly-Sturrock conjecture to rest
L. A. Rachmeler, C. E. DeForest, C. C. Kankelborg
We demonstrate that magnetic reconnection is not necessary to initiate fast CMEs. The Aly-Sturrock conjecture states that the magnetic energy of a given force free boundary field i…
Effects of partitioning and extrapolation on the connectivity of potential magnetic fields
D. W. Longcope, G. Barnes, C. Beveridge
Coronal magnetic field may be characterized by how its field lines interconnect regions of opposing photospheric flux -- its connectivity. Connectivity can be quantified as the net…
Gas-dynamic shock heating of post-flare loops due to retraction following localized, impulsive reconnection
D. W. Longcope, S. E. Guidoni, M. G. Linton
We present a novel model in which shortening of a magnetic flux tube following localized, three-dimensional reconnection generates strong gas-dynamic shocks around its apex. The sh…
Helioseismic data inclusion in solar dynamo models
Andrés Muñoz-Jaramillo, Dibyendu Nandy, Petrus C. H. Martens
An essential ingredient in kinematic dynamo models is the velocity field within the solar convection zone. In particular, the differential rotation is now well constrained by helio…
The Number Of Magnetic Null Points In The Quiet Sun Corona
D. W. Longcope, C. E. Parnell
The coronal magnetic field above a particular photospheric region will vanish at a certain number of points, called null points. These points can be found directly in a potential f…
Identification of different types of kink modes in coronal loops: principles and application to TRACE results
T. J. Wang, S. K. Solanki, M. Selwa
We explore the possible observational signatures of different types of kink modes (horizontal and vertical oscillations in their fundamental mode and second harmonic) that may aris…