Kinematic magnetic reconnection at 3D null points

D. I. Pontin, G. Hornig, E. R. Priest

    Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution

    Abstract

    Magnetic reconnection at a three-dimensional null point is the natural extension of the familiar two-dimensional X-point reconnection. Three dimensional null points are found in abundance in the solar corona, where they are thought to be an important feature with regards to the coronal heating problem. A model is set up here for reconnection at a 3D magnetic null point, by solving the kinematic, steady, resistive MHD equations in its vicinity. A steady magnetic field is assumed, as well as the existence of a localised diffusion region surrounding the null point. Particular attention is focused on the way that the magnetic flux changes its connections as a result of the reconnection process. The nature of the flows and the reconnection is found to be fundamentally different depending on the orientation of the electric current.
    Original languageEnglish
    Title of host publication Proceedings of the SOHO 15 Workshop, Coronal Heating, 6-9 September 2004, St Andrews, Scotland
    EditorsR. W. Walsh, J. Ireland, D. Danesy, B. Fleck
    Publication statusPublished - 2004
    EventSOHO 15 Workshop, Coronal Heating - St Andrews, United Kingdom
    Duration: 6 Sep 20049 Sep 2004

    Workshop

    WorkshopSOHO 15 Workshop, Coronal Heating
    CountryUnited Kingdom
    CitySt Andrews
    Period6/09/049/09/04

    Fingerprint

    solar corona
    electric current
    magnetic flux
    kinematics
    heating
    magnetic fields

    Keywords

    • Magnetic reconnection
    • Magnetohydrodynamics (MHD)
    • Magnetic null points
    • MHD

    Cite this

    Pontin, D. I., Hornig, G., & Priest, E. R. (2004). Kinematic magnetic reconnection at 3D null points. In R. W. Walsh, J. Ireland, D. Danesy, & B. Fleck (Eds.), Proceedings of the SOHO 15 Workshop, Coronal Heating, 6-9 September 2004, St Andrews, Scotland
    Pontin, D. I. ; Hornig, G. ; Priest, E. R. / Kinematic magnetic reconnection at 3D null points. Proceedings of the SOHO 15 Workshop, Coronal Heating, 6-9 September 2004, St Andrews, Scotland. editor / R. W. Walsh ; J. Ireland ; D. Danesy ; B. Fleck. 2004.
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    title = "Kinematic magnetic reconnection at 3D null points",
    abstract = "Magnetic reconnection at a three-dimensional null point is the natural extension of the familiar two-dimensional X-point reconnection. Three dimensional null points are found in abundance in the solar corona, where they are thought to be an important feature with regards to the coronal heating problem. A model is set up here for reconnection at a 3D magnetic null point, by solving the kinematic, steady, resistive MHD equations in its vicinity. A steady magnetic field is assumed, as well as the existence of a localised diffusion region surrounding the null point. Particular attention is focused on the way that the magnetic flux changes its connections as a result of the reconnection process. The nature of the flows and the reconnection is found to be fundamentally different depending on the orientation of the electric current.",
    keywords = "Magnetic reconnection, Magnetohydrodynamics (MHD), Magnetic null points, MHD",
    author = "Pontin, {D. I.} and G. Hornig and Priest, {E. R.}",
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    year = "2004",
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    Pontin, DI, Hornig, G & Priest, ER 2004, Kinematic magnetic reconnection at 3D null points. in RW Walsh, J Ireland, D Danesy & B Fleck (eds), Proceedings of the SOHO 15 Workshop, Coronal Heating, 6-9 September 2004, St Andrews, Scotland. SOHO 15 Workshop, Coronal Heating, St Andrews, United Kingdom, 6/09/04.

    Kinematic magnetic reconnection at 3D null points. / Pontin, D. I.; Hornig, G.; Priest, E. R.

    Proceedings of the SOHO 15 Workshop, Coronal Heating, 6-9 September 2004, St Andrews, Scotland. ed. / R. W. Walsh; J. Ireland; D. Danesy; B. Fleck. 2004.

    Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution

    TY - CHAP

    T1 - Kinematic magnetic reconnection at 3D null points

    AU - Pontin, D. I.

    AU - Hornig, G.

    AU - Priest, E. R.

    N1 - dc.description.sponsorship: Particle Physics and Astronomy Research Council European Community Human Potential dc.ispartof: ESA;SP-575

    PY - 2004

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    N2 - Magnetic reconnection at a three-dimensional null point is the natural extension of the familiar two-dimensional X-point reconnection. Three dimensional null points are found in abundance in the solar corona, where they are thought to be an important feature with regards to the coronal heating problem. A model is set up here for reconnection at a 3D magnetic null point, by solving the kinematic, steady, resistive MHD equations in its vicinity. A steady magnetic field is assumed, as well as the existence of a localised diffusion region surrounding the null point. Particular attention is focused on the way that the magnetic flux changes its connections as a result of the reconnection process. The nature of the flows and the reconnection is found to be fundamentally different depending on the orientation of the electric current.

    AB - Magnetic reconnection at a three-dimensional null point is the natural extension of the familiar two-dimensional X-point reconnection. Three dimensional null points are found in abundance in the solar corona, where they are thought to be an important feature with regards to the coronal heating problem. A model is set up here for reconnection at a 3D magnetic null point, by solving the kinematic, steady, resistive MHD equations in its vicinity. A steady magnetic field is assumed, as well as the existence of a localised diffusion region surrounding the null point. Particular attention is focused on the way that the magnetic flux changes its connections as a result of the reconnection process. The nature of the flows and the reconnection is found to be fundamentally different depending on the orientation of the electric current.

    KW - Magnetic reconnection

    KW - Magnetohydrodynamics (MHD)

    KW - Magnetic null points

    KW - MHD

    M3 - Other chapter contribution

    SN - 9290928867

    BT - Proceedings of the SOHO 15 Workshop, Coronal Heating, 6-9 September 2004, St Andrews, Scotland

    A2 - Walsh, R. W.

    A2 - Ireland, J.

    A2 - Danesy, D.

    A2 - Fleck, B.

    ER -

    Pontin DI, Hornig G, Priest ER. Kinematic magnetic reconnection at 3D null points. In Walsh RW, Ireland J, Danesy D, Fleck B, editors, Proceedings of the SOHO 15 Workshop, Coronal Heating, 6-9 September 2004, St Andrews, Scotland. 2004