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Polar jet kinetics and energetics analysed from STEREO/COR data

Published online by Cambridge University Press:  18 July 2013

Li Feng  and
Weiqun Gan
Li Feng
Affiliation:
Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, 210008 Nanjing, China email: [email protected]
Weiqun Gan
Affiliation:
Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, 210008 Nanjing, China email: [email protected]
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Abstract

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We analyze coronagraph observations of a polar jet eruption observed by SECCHI/STEREO. The brightness distribution of the jet in white-light coronagraph images is compared with a kinetic particle model. In this first application, we consider only gravity as the dominant force on the jet particles along the magnetic field. The kinetic model explains well the observed brightness evolution. The initial particle velocity distribution is fitted by Maxwellian distributions and we find deviations of the high energy tail from the Maxwellian distributions. The jets total mass is between 3.2×1014 and 1.8×1015 g. The total kinetic energy of all the particles in the jet source region amounts from 2.1×1028 to 2.4×1029 ergs.

Keywords

Sun: activitySun: corona
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 549 - 550
Copyright
Copyright © International Astronomical Union 2013 

References

Ko, Y.-K., Raymond, J. C., Gibson, S. E., et al. 2005, ApJ, 623, 519 Google Scholar
Feng, L., Inhester, B., de Patoul, J., et al. 2012, A&A, 538, A34 Google Scholar