Data for "Energetic Electron Enhancements Near the Dayside Magnetopause: Outward Radial Transport Due to Asymmetric Drift-Orbit Bifurcation"

Here we provide a dataset that includes test-particle simulation results (test_particles.zip) used in this study, as well as data from the THEMIS spacecraft (A, C, E) during the magnetopause crossing on 1st October 2018. The test-particle data is given in separate .txt files for each particle and includes time in c/R_E units (where c is the speed of light and R_E is Earth’s radius), azimuthal coordinate (mlt) in hours, guiding center coordinates (x, y, z), parallel momentum ppar in m_e c units (m_e is the electron rest mass), relativistic gamma factor gamma, and magnetic field strength at the mirror point B_m in B0 = 31000 nT units. THEMIS-A and THEMIS-D data (tha_20181001_080000.txt and thd_20181001_080000.txt) are formatted as: UT|T|L|MLT|X|Y|Z|Bx|By|Bz|LB_ts04|…, where UT is Universal Time, MLT is Magnetic Local Time, (X, Y, Z) are spacecraft coordinates in GSM, (Bx, By, Bz) are magnetic field components in GSM, and LB_ts04 is the L* parameter from the Tsyganenko & Sitnov (2005) model, numbers after "LB_tso4|..." refer to energy chanels (in keV) mesured by the Solid State Telescope. ARTEMIS (THEMIS-C) data (thc_20181001_080000.txt) is formatted as: Tdat, T, Bx, By, Bz, Btot, theta, pdyn, X_th, Y_th, Z_th, where Tdat is Universal Time, T is time in seconds, (Bx, By, Bz) are magnetic field components in GSM, Btot is the total magnetic field, theta is the IMF rotation angle, pdyn is the solar wind dynamic pressure, and (X_th, Y_th, Z_th) are spacecraft coordinates in GSM.本研究配套提供一份数据集，包含本研究中使用的试验粒子模拟结果（压缩包文件名为test_particles.zip），以及2018年10月1日磁层顶穿越事件期间，THEMIS航天器（A、C、E三子探测器）获取的观测数据。 试验粒子数据以单粒子独立文本文件（.txt格式）存储，包含以下参数：以c/R_E为单位的时间（其中c为光速，R_E为地球半径）、以小时为单位的方位角坐标（磁地方时，Magnetic Local Time，MLT）、引导中心坐标(x, y, z)、以m_e c为单位的平行动量ppar（其中m_e为电子静止质量）、相对论伽马因子γ，以及以B0=31000 nT为单位的镜点磁场强度B_m。 THEMIS-A与THEMIS-D的数据（对应文件为tha_20181001_080000.txt与thd_20181001_080000.txt）格式为：UT|T|L|MLT|X|Y|Z|Bx|By|Bz|LB_ts04|……，其中UT为世界时（Universal Time），MLT为磁地方时（Magnetic Local Time），(X,Y,Z)为地心太阳磁层坐标系（Geocentric Solar Magnetospheric，GSM）下的航天器坐标，(Bx,By,Bz)为GSM坐标系下的磁场分量，LB_ts04为Tsyganenko与Sitnov（2005）模型中的L*参数，"LB_ts04|……"之后的数值代表固态望远镜（Solid State Telescope）测量的能量通道（单位为keV）。 ARTEMIS（即THEMIS-C）的数据（对应文件为thc_20181001_080000.txt）格式为：Tdat、T、Bx、By、Bz、Btot、theta、pdyn、X_th、Y_th、Z_th，其中Tdat为世界时，T为以秒为单位的时间，(Bx,By,Bz)为GSM坐标系下的磁场分量，Btot为总磁场强度，theta为行星际磁场（Interplanetary Magnetic Field，IMF）旋转角，pdyn为太阳风动压，(X_th,Y_th,Z_th)为GSM坐标系下的航天器坐标。