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arXiv 2403.06282astro-ph.HE
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脉冲星耗散磁层中的多波段辐射特性建模

Modeling the Multi-wavelength Radiation Properties in Pulsar Dissipative Magnetospheres

Xiongbang Yang, Gang Cao

AI总结:

该研究针对脉冲星耗散磁层的多波段辐射特性,结合无力与亚里士多德电动力学模拟磁层并计算辐射,成功复现三颗脉冲星的多波段观测趋势。

摘要:

我们探究了脉冲星耗散磁层中光变曲线和能谱的多波段辐射特性。我们采用伪谱法,结合无力电动力学与亚里士多德电动力学对耗散磁层进行模拟,该方法能产生主要分布于光锥外赤道电流片的自洽加速电场。我们利用赤道电流片中被加速电场加速的原初粒子,以及具有假设分布谱的次级正负电子对的多种辐射机制,计算了多波段光变曲线和能谱。随后我们将预测的多波段光变曲线和能谱与Crab、Vela、Geminga三颗脉冲星的观测数据进行了对比。我们的建模结果能够系统地很好地复现这三颗脉冲星多波段光变曲线和能谱的观测趋势。

英文摘要:

We explore the multiwavelength radiation properties of the light curves and energy spectra in the dissipative magnetospheres of pulsars. The dissipative magnetospheres are simulated by the pseudo-spectral method with the combined force-free and Aristotelian electrodynamics, which can produce self-consistent accelerating electric fields mainly distributed in the equatorial current sheet outside the light cylinder. The multiwavelength light curves and spectra are computed by using the multiple emission mechanisms of both the primary particles accelerated by the accelerating electric fields in the equatorial current sheet and the secondary pairs with an assumed distribution spectrum. We then compare the predicted multiwavelength light curves and spectra with the observed data from the Crab, Vela, and Geminga pulsars. Our modeling results can systematically well reproduce the observed trends of the multiwavelength light curves and the spectra for these three pulsars.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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