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arXiv 2406.05752astro-ph.HEgr-qc
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强场QED效应对偶极和四极脉冲星辐射偏振态的影响

Strong-field QED effects on polarization states in dipole and quadrudipole pulsar emissions

Dong-Hoon Kim, Chul Min Kim, Sang Pyo Kim

AI总结:

本文研究强磁场中子星中QED量子折射效应对脉冲星辐射偏振态演化的影响,通过求解斯托克斯矢量方程,发现三种演化模式,并用近似解析解加以验证。

摘要:

高磁化中子星由于量子电动力学(QED)作用的非线性,对脉冲星辐射产生量子折射效应。本文研究了量子折射效应下脉冲星辐射偏振态的演化,并结合了对发射频率的依赖性;我们求解了斯托克斯矢量的演化方程组,其中编码了这些效应的双折射矢量作用于斯托克斯矢量。在固定的发射频率下,取决于主要由磁场强度决定的双折射矢量的大小,斯托克斯矢量的演化大体上表现出三种不同的模式:(i)单调的,(ii)半振荡的,或(iii)高度振荡的行为。这些特征通过演化方程的近似解析解得以理解和确认。

英文摘要:

Highly magnetized neutron stars have quantum refraction effects on pulsar emission due to the non-linearity of the quantum electrodynamics (QED) action. In this paper, we investigate the evolution of the polarization states of pulsar emission under the quantum refraction effects, combined with the dependence on the emission frequency; we solve a system of evolution equations of the Stokes vector, where the birefringent vector, in which such effects are encoded, acts on the Stokes vector. At a fixed frequency of emission, depending on the magnitude of the birefringent vector, dominated mostly by the magnetic field strength, the evolution of the Stokes vector largely exhibits three different patterns: (i) monotonic, or (ii) half-oscillatory, or (iii) highly oscillatory behaviors. These features are understood and confirmed by means of approximate analytical solutions to the evolution equations.

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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