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Title:
Slipping Magnetic Reconnection in Coronal Loops
Authors:
Aulanier, Guillaume; Golub, Leon; DeLuca, Edward E.; Cirtain, Jonathan W.; Kano, Ryouhei; Lundquist, Loraine L.; Narukage, Noriyuki; Sakao, Taro; Weber, Mark A.
Affiliation:
AA(Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique (LESIA), Observatoire de Paris, Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie (UPMC), Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France.), AB(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA.), AC(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA.), AD(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA.), AE(National Astronomical Observatory of Japan (NAOJ), Mitaka, Tokyo 181–8588, Japan.), AF(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA.), AG(Kwasan and Hida Observatories, Kyoto University, Yamashina, Kyoto 607–8471, Japan.), AH(Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229–8510, Japan.), AI(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA.)
Publication:
Science, Volume 318, Issue 5856, pp. 1588- (2007).
Publication Date:
12/2007
Category:
ASTRONOMY
Origin:
SCIENCE
DOI:
10.1126/science.1146143
Bibliographic Code:
2007Sci...318.1588A

Abstract

Magnetic reconnection of solar coronal loops is the main process that causes solar flares and possibly coronal heating. In the standard model, magnetic field lines break and reconnect instantaneously at places where the field mapping is discontinuous. However, another mode may operate where the magnetic field mapping is continuous but shows steep gradients: The field lines may slip across each other. Soft x-ray observations of fast bidirectional motions of coronal loops, observed by the Hinode spacecraft, support the existence of this slipping magnetic reconnection regime in the Sun’s corona. This basic process should be considered when interpreting reconnection, both on the Sun and in laboratory-based plasma experiments.
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