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Publications

Updated 09/2011

2011

Wilmot-Smith, A.L., Pontin, D., Yeates, A.R. and Hornig, G. Heating of braided coronal loops, Astronomy and Astrophysics 536, A67 (2011) astro-ph

Yeates, A.R., Hornig, G., and Welsch, B.T., Lagrangian coherent structures in photospheric flows and their implications for coronal magnetic structure.astro-ph

Yeates, A.R. and Hornig, G. A Generalized Flux Function For Three-Dimensional Magnetic Reconnection Physics of Plasmas 18, 102118 (2011). astro-ph

Galsgaard, K. and Pontin, D. I. Current accumulation at an asymmetric 3D null point caused by generic shearing motions, A&A, 534, A2 (2011). astro-ph
Pontin, D. I., Al-Hachami, A.K. and Galsgaard, K. Generalised models for torsional spine and fan magnetic reconnection, A&A, 533, A78 (2011). astro-ph

Wilmot-Smith, A and Hornig, G.,A time-dependent model for magnetic reconnection in the presence of a separator Astrophysical Journal 740, 89 (2011) pdf

Yeates, A.R. and Hornig, G., Dynamical constraints from field line topology in magnetic flux tubes, J. Phy. A. 44(26), 265501

Pontin, D. I. Three-dimensional magnetic reconnection regimes: A review, Adv. Space Res., 47, 1508-1522 (2011). [doi:10.1016/j.asr.2010.12.022] astro-ph

Galsgaard, K. and Pontin, D. I. Steady state reconnection at a single 3D magnetic null point, A&A, 529, A20 (2011). astro-ph

Pontin, D.I., Wilmot-Smith, A.L., Hornig, G., Galsgaard, K., Dynamics of Braided Coronal Loops - II. Cascade to multiple small scale events, A&A, 525, A57 (2011). [doi:10.1051/0004-6361/201014544] astro-ph

2010

Yeates, A.R., Hornig, G. and Wilmot-Smith, A.L. Topological Constraints on Magnetic Relaxation, Phys. Rev. Lett., 105, 085002 (2010) astro-ph

Al-Hachami, A. K. and Pontin, D. I., Magnetic reconnection at 3D null points: effect of magnetic field asymmetry, A&A, 512, A84 (2010), [doi:10.1051/0004-6361/200913002] astro-ph

Wilmot-Smith, A.L., Pontin, D.I., Hornig, G., Dynamics of Braided Coronal Loops - I. Loss of Equilibrium, Astron. & Astrophys. 516 A5 (2010) [DOI:10.1051/0004-6361/201014041] astro-ph

Munoz-Jaramillo, A., Nandy, D., Martens, P.C.H., and Yeates, A.R., A Double-Ring Algorithm for Modeling Solar Active Regions: Unifying Kinematic Dynamo Models and Surface Flux-Transport Simulations, Astrophysical Journal Letters, 720, L20 (2010). (astro-ph)

Yeates, A. R., Constable, J.A, and Martens, P.C.H., Solar Cycle Variation of Magnetic Flux Ropes in a Quasi-static Coronal Evolution Model, Solar Physics, 263, 121 (2010). (astro-ph)

Yeates, A. R., Attrill, G. D. R., Nandy, D., Mackay, D., Martens, P. C. H. and van Ballegooijen, A. A., Comparison of a Global Magnetic Evolution Model with Observations of Coronal Mass Ejections, Astrophysical Journal, 709, 1238 (2010). (astro-ph)

Yeates, A. R., Mackay, D.H., van Ballegooijen, A.A. and Constable, J.A, A Non-Potential Model for the Sun's Open Magnetic Flux, J. Geophys. Res., in press. (astro-ph)

2009

Yeates, A. R. and Mackay, D. H., Initiation of Coronal Mass Ejections in a Global Evolution Model, Astrophysical Journal, 699, 1024, 2009. (astro-ph)

Yeates, A. R. and Mackay, D. H., Modelling the Global Solar Corona III: Origin of the Hemispheric Pattern of Filaments, Solar Physics, 254, 77, 2009. (astro-ph)

Priest, E. R. and Pontin, D. I., 3D null point reconnection regimes,
Phys. Plasmas, 16, 122101, 2009. [doi:10.1063/1.3257901] pdf arXiv preprint
Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. http://link.aip.org/link/?PHPAEN/16/122101/1

Deng, X. H. and 28 others, Dynamics and waves near multiple magnetic null points in reconnection diffusion region, J. Geophys. Res., 114, A07216, 2009. Journal page

Al-Salti, N. and Hornig, G., On the Solutions of 3D Non-Null Magnetic Reconnection, Physics of Plasmas 16, 082101 (2009); doi:10.1063/1.3192764

Wilmot-Smith, A.L., Hornig, G., Pontin, D.I., Magnetic Braiding and Quasi-Separatrix Layers, ApJ, 704, pp. 1288 (2009) astro-ph pdf

Wilmot-Smith, A.L., Hornig, G., Pontin, D.I., Magnetic Braiding and Parallel Electric Fields, Astrophysical Journal, 696 pp.1339 (2009) astro-ph pdf

Pontin, D. I., Hornig, G., Wilmot-Smith, A. L. and Craig, I. J. D., Lagrangian relaxation schemes for calculating force-free magnetic fields, and their limitations, Astrophys. J., 700, 1449-1455, 2009. [doi:10.1088/0004-637X/700/2/1449] pdf arXiv preprint (Copyright 2009. The American Astronomical Society. All rights reserved.)

Wilmot-Smith, A.L., Hornig, G., Priest, E.R., `Dynamic non-null magnetic reconnection in three-dimensions - II. Composite Solutions', Geophys. Astrophys. Fluid Dyn. 103 (6), 515 - 534 (2009) astro-ph pdf

2008

Yeates, A. R., Mackay, D. H. and van Ballegooijen, A. A., Evolution and Distribution of Current Helicity in Full-Sun Simulations, Astrophysical Journal Letters, 680, L165, 2008. (astro-ph)

Mackay, D. H., Gaizauskas, V. and Yeates, A. R., Where do Solar Filaments Form? Consequences for Theoretical Models, Solar Physics, 248, 51, 2008.

Yeates, A. R., Mackay, D. H. and van Ballegooijen, A. A., Modelling the Global Solar Corona II: Coronal Evolution and Filament Chirality Comparison, Solar Physics, 247, 103, 2008. (astro-ph)

Yeates, A. R., Nandy, D. and Mackay, D. H., Exploring the Physical Basis of Solar Cycle Predictions: Flux Transport Dynamics and Persistence of Memory in Advection versus Diffusion Dominated Solar Convection Zones, Astrophysical Journal, 673, 544, 2008. (astro-ph)

2007

Yeates, A. R., Mackay, D. H. and van Ballegooijen, A. A., Modelling the Global Solar Corona: Filament Chirality Observations and Surface Simulations, Solar Physics, 245, 87, 2007. (astro-ph)

Pontin, D. I., Bhattacharjee, A. and Galsgaard, K., Current sheets at three-dimensional magnetic nulls: Effect of compressibility, Phys. Plasmas, 14, 052109, 2007. pdf arXive preprint

Pontin, D. I., Bhattacharjee, A. and Galsgaard, K., Current sheet formation and non-ideal behaviour at three-dimensional magnetic null points, Phys. Plasmas., 14, 052106 (2007) pdf arXive preprint

Pontin, D. I., and K. Galsgaard (2007), Current amplification and magnetic reconnection at a three-dimensional null point: Physical characteristics, J. Geophys. Res., 112, A03103, doi:10.1029/2006JA011848 pdf arXive preprint An edited version of this paper was published by AGU. Copyright (2007) American Geophysical Union.

Hornig, G., Fundamental Concepts in Reconnection of Magnetic Fields, Editors: J. Birn and E. R. Priest, 24-44 (2007)

Hornig, G., Three-dimensional reconnection without nulls in Reconnection of Magnetic Fields, Editors: J. Birn and E. R. Priest, Cambridge University Press, 44-61 (2007)

Pontin, D. I., Three-dimensional reconnection at magnetic null points in Reconnection of Magnetic Fields, Editors: J. Birn and E. R. Priest, Cambridge University Press, 62-74 (2007).

2006

Pontin, D. I. and Craig, I. J. D., Dynamic 3D reconnection in a separator geometry with two null points, Astrophys. J., 642, 568-578, 2006. pdf

Wilmot-Smith, A.L., Priest, E.R., Hornig, G Dynamic non-null magnetic reconnection in three dimensions. I. Particular solutions Proc. R. Soc. A., 462, pp 2877-2895 (2006)

Wilmot-Smith, A.L., Nandy, D., Hornig, G. and Martens, P.C.H., A Time Delay Model for Solar and Stellar Dynamos, Astrophysical Journal 652, pp 696-708 (2006)

Maclean, R.C., Hornig, G. , Priest, E.R., Beveridge, C., Coronal Magnetic Topologies in a Spherical Geometry - I. Two Bipolar Flux Sources, Solar Physics 235, pp. 259-280 (2006)

2005

Pontin, D.I., Galsgaard, K., Hornig, G., Priest, E.R., Evolution of magnetic flux in 3D reconnection: full magnetohydrodynamic simulations , Phys. Plasmas, 12, pp 052307 (2005)

Pontin, D.I., Hornig, G., Priest, E.R., Kinematic Reconnection at a Magnetic Null Point: Fan aligned current , Geophysical and Astrophysical Fluid Dynamics, 99, pp 77-93 (2005)

Pontin, D. I. and Craig, I. J. D., Current singularities at finitely compressible 3D magnetic null points, Phys. Plasmas, 12, 072112, 2005. pdf

Wilmot-Smith, A.L., Priest, E.R., Hornig, G Magnetic Diffusion and the Motion of Field Lines, Geophysical and Astrophysical Fluid Dynamics 99, pp 177-197 (2005)

2004

Pontin, D.I., Hornig, G., Priest, E.R., Kinematic Reconnection at a Magnetic Null Point: Spine aligned Reconnection , Geophysical and Astrophysical Fluid Dynamics 89, 407-428 (2004) (Preprint, PDF)

Hornig, G., A universal helicity integral , ArXiv.org

Titov, V.S., Tassi, E., Hornig, G., Exact solutions for steady reconnective annihilation revisited , Physics of Plasmas 11, 4662 (2004) (Preprint, PDF)

H.v. Bodecker, Hornig, G., Link-invariants of electromagnetic fields, Phys. Rev.~Lett. 92(3), 030406, 23 Jan 2004 (PDF 200K )

Priest, E. R. and Pontin, D. I., Magnetic reconnection,in The Sun and the heliosphere as an integrated system, ed. G. Poletto and S. T. Suess, Kluwer, Dordrecht, 2004. pdf

2003

Hornig, G., Priest, E.R., Evolution of magnetic flux in an isolated reconnection process, Physics of Plasmas 10(7), 2712-2721 (2003) PDF-file

Hornig, G., Reconnection in magnetic and vorticity fields, in Tubes, Sheets and Singularities in Fluid Dynamics, Ed.: K. Bajer, Kluwer 2003, 133 -136.

Priest, E.R., Hornig, G., Pontin, D.I., On the Nature of Three-Dimensional Magnetic Reconnection, J. Geophys. Res., 108(A7), 1285, 2003. doi:10.1029/2002JA009812 PDF-file

Pontin, D. I., Priest, E. R. and Longcope, D., A framework for understanding the topology of complex coronal structures, Solar Phys., 212, 319-342, 2003.

Tassi, E., Titov, V.S., Hornig, G., New classes of exact solutions for reconnective annihilation , Phys. Lett. A 315 382-388 (2003)

Tassi, E., Titov, V.S., Hornig, G., Exact solutions for reconnective annihilation in magnetic configurations with three sources, Phys. Plasmas 10, No 2, 448-453 (2003)

Tassi, E., Titov, V.S., Hornig, G., Exact Solutions for Magnetic Reconnective Annihilation in Curvilinear Geometry, 30th EPS Conference on Contr. Fusion and Plasma Phys., St. Petersburg, 7-11 July 2003 ECA Vol. 27A, P-1.31

Mayer, C., Hornig, G., Higher order topological invariants, in Tubes, Sheets and Singularities in Fluid Dynamics, Ed.: K. Bajer, Kluwer 2003, p. 151-156.

2002

Titov, V.S., Hornig, G., Magnetic connectivity of coronal fields: geometrical versus topological description, 33rd COSPAR Scientific Assembly, Warsaw, Poland, Adv. Space Res., 2002, 29, 1087-1092

Hornig, G., Mayer, C., Towards a third order topological invariant for magnetic fields, J. Phys. A 35, 3945-3959 (2002) PDF-file

Titov, V.S., Hornig, G., Demoulin, P., The theory of magnetic connectivity in the solar corona,JGR 107(8)doi:10.1029/2001JA000278 (2002) PDF-file

Tassi, E., Titov, V.S., Hornig, G., Exact solutions for magnetic annihilation in curvilinear geometry Phys Lett. A 302, No 5-6, 313-317 (2002)

Titov, V.S., Hornig, G., Demoulin P, The theory of magnetic connectivity in the solar corona, J.~Geophys.~Res. 107(8) (2002).

Titov, V.S., Hornig, G., Magnetic connectivity of coronal fields: geometrical versus topological description, Adv. Space Res. 29, 1087-1092 (2002).Pdf-file

2001

Kleimann, J., Hornig, G., Non-ideal MHD Properties of Magnetic Flux Tubes in the Solar Photosphere , Solar Physics 200(1/2), 47-62, (2001) Solar Physics

Hornig, G., The Geometry of Magnetic and Vortex Reconnection, Quantized Vortex Dynamics and Superfluid Turbulence edited by C.F. Barenghi, R.J. Donnelly and W.F. Vinen, Lecture Notes in Physics 571, Springer-Verlag, 2001(6 pages, PDF-file)

Hornig, G., The Geometry of Reconnection, in An Introduction to the Geometry and Topology of Fluid Flows ed. R.L. Ricca, Kluwer 2001 (20 pages, Pdf-file)

Schindler, K., and Hornig, G., Magnetic Reconnection, in Encyclopedia of Astronomy and Astrophysics, Don Emerson (Editor) Institute of Physics Publishing, UK 2001.

2000

Titov, V.S., Hornig, G., Magnetohydrodynamic flows sustaining stationary magnetic nulls, Phys. Plasmas, 2000, 7, No. 9, 3542-3550.

1999

Hornig, G., Topological Constraints on the Relaxation of Complex Magnetic Fields , 9-th European Meeting on Solar Physics "Magnetic Fields and Solar Processes", Firenze, Italy, September 12-18, 1999

Titov, V.S., Demoulin, P., Hornig, G., Quasi-Separatrix Layers: Refined Theory and its Application to Solar Flares 9-th European Meeting on Solar Physics "Magnetic fields and solar processes", Firenze, Italy, September 12-18, 1999

Hornig, G., The evolution of magnetic helicity under reconnection, in ``Magnetic Helicity in Space and Laboratory Plasmas'', M.R. Brown, R.C. Canfield and A.A. Pevtsov (Editors), American Geophysical Union, Washington, 157 (1999)

1998

Rastätter, L., Hornig, G., Simulations of non-stationary Reconnection in Lie-transported electromagnetic fields, Physica Scripta T 74, 40-46 (1998).

Hornig, G. (60%), Rastätter, L., The magnetic structure of B 6= 0-reconnection, Physica Scripta T 74, 34-40 (1998).

1997

Hornig, G., The Covariant Transport of Electromagnetic Fields and its Relation to Magnetohydrodynamics , Phys. Plasmas 4, 646-656 (1997) (Pdf-file).

Hornig, G.: Zur kovarianten Formulierung der magnetischen Rekonnexion, Thesis, Ruhr-Universitt Bochum, 1997, 110 pages

1996

Hornig, G., Schindler, K., Magnetic Topology and the Problem of its Invariant Definition, Phys. Plasmas 3, 781-793 (1996).

Hornig, G., Schindler, K., The Problem of Magnetic Topology and Reconnection in Relativistic Systems, Astro. Lett. Comm., 34, 231-236 (1996).