AI 中文总结
本研究基于分裂单极电流片几何，引入打破对称性的发射率参数，构建模型重现多种γ射线脉冲星光变曲线，揭示非对称发射率可解释其形态多样性，为高能脉冲星辐射提供新框架。
AI 中文摘要
费米大面积望远镜（Fermi-LAT）已发现超过300颗γ射线脉冲星，其展现出丰富多样的光变曲线形态，这在纯磁层辐射模型中难以重现，表明粒子加速和辐射可能至少部分发生在带纹风电流片内。我们基于分裂单极电流片几何计算了脉冲星γ射线光变曲线的综合图谱，旨在量化对等离子体加载在塑造观测到的脉冲形态中的作用。电流片表面以解析方式描述，被假定为高能光子发射的主要位点。通过一组最小参数引入空间依赖的发射率规定，这些参数明确打破了发射等离子体的南北和方位角对称性。仅用几个具有物理意义的参数，该模型就能重现广泛的观测γ射线光变曲线形态，包括非对称、多峰和高度结构化的轮廓。结果表明，可能与对等离子体加载相关的非对称发射率，提供了一种自然且经济的机制，能够重现观测到的γ射线脉冲轮廓多样性的很大一部分。因此，电流片场景似乎为高能脉冲星辐射提供了一个有前景且具有物理依据的框架。
英文摘要
The discovery of more than 300 $γ$-ray pulsars by the Fermi Large Area Telescope (Fermi-LAT) has revealed a rich diversity of light-curve morphologies that remains challenging to reproduce within purely magnetospheric emission models, suggesting that particle acceleration and radiation may occur, at least in part, in the striped-wind current sheet. We compute a comprehensive atlas of pulsar $γ$-ray light curves based on the split-monopole current sheet geometry, with the goal of quantifying the role of pair plasma loading in shaping the observed pulse morphology. The current-sheet surface is described analytically and assumed to be the dominant site of high-energy photon emission. Spatially dependent emissivity prescriptions are introduced through a minimal set of parameters that explicitly break the north-south and azimuthal symmetries of the emitting plasma. With only a few physically motivated parameters, the model is able to reproduce a broad range of the observed $γ$-ray light-curve morphologies, including asymmetric, multi-peaked, and highly structured profiles. The results show that asymmetric emissivity, possibly related to pair-plasma loading, provides a natural and economical mechanism capable of reproducing a substantial fraction of the observed diversity of $γ$-ray pulse profiles. The current-sheet scenario therefore appears to provide a promising and physically motivated framework for high-energy pulsar emission.
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