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Electron and Proton Heating in Transrelativistic Magnetic Reconnection

  • Authors: Michael E. Rowan, Lorenzo Sironi, and Ramesh Narayan

2017 The Astrophysical Journal 850 29.

  • Provider: AAS Journals

Caption: Figure 7.

Comparison between a low-﹩{\beta }_{{\rm{i}}}﹩(left column, with ﹩{\beta }_{{\rm{i}}}=0.0078﹩, A[0] in Table 1) and a high-﹩{\beta }_{{\rm{i}}}﹩(right column, with ﹩{\beta }_{{\rm{i}}}=0.5﹩, A[3] in Table 1) simulation, at time ﹩t=9225\,{\omega }_{\mathrm{pe}}^{-1}\approx 0.65\,{t}_{{\rm{A}}}﹩. In both cases, ﹩{\sigma }_{w}=0.1﹩, ﹩{T}_{{\rm{e}}}/{T}_{{\rm{i}}}=0.1﹩, and ﹩{m}_{{\rm{i}}}/{m}_{{\rm{e}}}=25﹩. (a, d) 1D profiles along x (averaged along y within the reconnection downstream, as identified by Equation (7)) of proton (red) and electron (blue) outflow velocity in units of the Alfvén speed, ﹩{v}_{\mathrm{out}}/{v}_{{\rm{A}}};﹩ (b, e) 1D profiles along x of the upstream (magenta) and downstream (green) dimensionless electron temperature, ﹩{\theta }_{{\rm{e}}}﹩ (the two slabs in between the vertical dotted lines indicate the regions we use to calculate the downstream and upstream temperatures); (c, f) 2D plots of ﹩\mathrm{log}({\theta }_{{\rm{e}}})﹩. In both the low- and high-﹩{\beta }_{{\rm{i}}}﹩ cases, the spatial profiles of outflow velocity and electron temperature show that the downstream region reaches a quasi-steady state.

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