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Polar jet kinetics and energetics analysed from STEREO/COR data
release_styxpzgftfgv3j5q54yi4ymszy
by
Li Feng,
Weiqun Gan
Published
in Proceedings of the International Astronomical Union
by Cambridge University Press (CUP).
2012 Issue S294, p549-550
Abstract
<jats:title>Abstract</jats:title>
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 3.2×10<jats:sup>14</jats:sup> and 1.8×10<jats:sup>15</jats:sup> g. The total kinetic energy of all the particles in the jet source region amounts from 2.1×10<jats:sup>28</jats:sup> to 2.4×10<jats:sup>29</jats:sup> ergs.
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