Observational Evidence for Stochastic Shock Drift Acceleration of Electrons at the Earth’s Bow Shock. (arXiv:2002.06787v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Amano_T/0/1/0/all/0/1">T. Amano</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Katou_T/0/1/0/all/0/1">T. Katou</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kitamura_N/0/1/0/all/0/1">N. Kitamura</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Oka_M/0/1/0/all/0/1">M. Oka</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Matsumoto_Y/0/1/0/all/0/1">Y. Matsumoto</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hoshino_M/0/1/0/all/0/1">M. Hoshino</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Saito_Y/0/1/0/all/0/1">Y. Saito</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yokota_S/0/1/0/all/0/1">S. Yokota</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Giles_B/0/1/0/all/0/1">B. L. Giles</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Paterson_W/0/1/0/all/0/1">W. R. Paterson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Russell_C/0/1/0/all/0/1">C. T. Russell</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Contel_O/0/1/0/all/0/1">O. Le Contel</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ergun_R/0/1/0/all/0/1">R. E. Ergun</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lindqvist_P/0/1/0/all/0/1">P.-A. Lindqvist</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Turner_D/0/1/0/all/0/1">D. L. Turner</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fennell_J/0/1/0/all/0/1">J. F. Fennell</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Blake_J/0/1/0/all/0/1">J. B. Blake</a>
The first-order Fermi acceleration of electrons requires an injection of
electrons into a mildly relativistic energy range. However, the mechanism of
injection has remained a puzzle both in theory and observation. We present
direct evidence for a novel stochastic shock drift acceleration theory for the
injection obtained with Magnetospheric Multiscale (MMS) observations at Earth’s
bow shock. The theoretical model can explain electron acceleration to mildly
relativistic energies at high-speed astrophysical shocks, which may provide a
solution to the long-standing issue of electron injection.
The first-order Fermi acceleration of electrons requires an injection of
electrons into a mildly relativistic energy range. However, the mechanism of
injection has remained a puzzle both in theory and observation. We present
direct evidence for a novel stochastic shock drift acceleration theory for the
injection obtained with Magnetospheric Multiscale (MMS) observations at Earth’s
bow shock. The theoretical model can explain electron acceleration to mildly
relativistic energies at high-speed astrophysical shocks, which may provide a
solution to the long-standing issue of electron injection.
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