X-Ray Jet Dynamics in a Polar Coronal Hole Region |
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| Authors: | Boris Filippov Leon Golub Serge Koutchmy |
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| Institution: | (1) Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moscow Region, 142190, Russia;(2) Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS58, Cambridge, MA 02138, USA;(3) Institut d’Astrophysique de Paris, CNRS and Univ. P.& M. Curie, 98 Bis Boulevard Arago, 75014 Paris, France |
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| Abstract: | New X-ray observations of the north polar region taken from the X-ray Telescope (XRT) of the Hinode spacecraft are used to analyze several time sequences showing small loop brightenings with a long ray above. We focus on
the formation of the jet and discuss scenarios to explain the main features of the events: the relationship with the expected
surface magnetism, the rapid and sudden radial motion, and possibly the heating, based on the assumption that the jet occurs
above a null point of the coronal magnetic field. We conclude that 2-D reconnection models should be complemented in order
to explain the observational details of these events and suggest that alternative scenarios may exist. |
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| Keywords: | Coronal holes Jets Magnetic fields models Magnetic reconnection observational signatures |
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