论文标题
太阳耀斑的全球能量学：X。Petschek重新连接速率和Alfven Mach磁重新连接流出数
Global Energetics of Solar Flares: X. Petschek Reconnection Rate and Alfven Mach Number of Magnetic Reconnection Outflows
论文作者
论文摘要
我们研究了在Sweet-Parker模型和Petschek模型的框架中，在太阳耀斑中磁性消散的物理缩放定律。 We find that the total dissipated magnetic energy $E_{diss}$ in a flare depends on the mean magnetic field component $B_f$ associated with the free energy $E_f$, the length scale $L$ of the magnetic area, the hydrostatic density scale height $λ$ of the solar corona, the Alfvén Mach number $M_A=v_1/v_A$ (the ratio of the inflow speed $v_1$ to the alfvénicFlofl速度$ v_a $）和耀斑持续时间$τ_f$，即$ e_ {diss} =（1/4π）b_f^2 \ l \λv_a\ m_a \ m_a \ m_a \ m_a \τ_f$在alfvne speed the nonpotitial $ b $ b_ $ b_ $ np and $ b_} $ np and np and np and np and np and np and np and np and np and。重新连接流出。使用MDI/SDO和AIA/SDO观察以及3-D磁场解决方案，使用垂直电流近似非无线性无力场代码（VCA-NLFFF）获得，我们测量了测试缩放定律所需的所有物理参数，这代表了一种新的方法，代表了一种用于测量AlfvénMach Mach $ M_A $ M_A $，重新连接的flar的新方法。
We investigate physical scaling laws for magnetic energy dissipation in solar flares, in the framework of the Sweet-Parker model and the Petschek model. We find that the total dissipated magnetic energy $E_{diss}$ in a flare depends on the mean magnetic field component $B_f$ associated with the free energy $E_f$, the length scale $L$ of the magnetic area, the hydrostatic density scale height $λ$ of the solar corona, the Alfvén Mach number $M_A=v_1/v_A$ (the ratio of the inflow speed $v_1$ to the Alfvénic outflow speed $v_A$), and the flare duration $τ_f$, i.e., $E_{diss} = (1/4π) B_f^2\ L\ λ v_A\ M_A\ τ_f$, where the Alfvén speed depends on the nonpotential field strength $B_{np}$ and the mean electron density $n_e$ in the reconnection outflow. Using MDI/SDO and AIA/SDO observations and 3-D magnetic field solutions obtained with the vertical-current approximation nonlinear force-free field code (VCA-NLFFF) we measure all physical parameters necessary to test scaling laws, which represents a new method to measure Alfvén Mach numbers $M_A$, the reconnection rate, and the total free energy dissipated in solar flares.
