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Electric Dominance in Particle Injection during Relativistic Magnetic Reconnection

A particle-in-cell study of how much early-stage particle energization in relativistic pair-plasma reconnection with vanishing guide field is supplied by regions of electric dominance (E>B). It measures the fractional contribution to acceleration up to the injection threshold, showing this contribution grows with plasma magnetization and particle energy and dominates injection at high magnetization, relevant to compact-object magnetospheres.

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MNRAS 000, 1–10 (2024) Preprint January 3, 2025 Compiled using MNRAS LATEX style file v3.0 The Role

Using 2D particle-in-cell simulations of relativistic pair-plasma magnetic reconnection with vanishing guide field, this study quantifies how much of the early 'injection' energy gain of accelerated …