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arXiv 2011.14768astro-ph.HE
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频率分辨射电和射电星的高能辐射

Frequency resolved radio and high-energy emission of pulsars

Quentin Giraud, Jérôme Pétri

摘要:

上下文脉冲星被探测为从无线电波长到MeV/GeV甚至TeV范围内的高能量和非常高能量的宽带电磁发射器。多波长相位分辨光谱和光变曲线提供了一个无与伦比的机会来了解其潜在的辐射机制,并定位其发射位点,从而粒子加速区域。目的。在本文中,我们计算的曲率辐射的多波长相位分辨光变曲线和光谱假设从内部的磁层旋转真空磁铁。射电辐射来自极冠,而伽马射线能量则来自闭合场线和开放场线之间分界线附近的缝隙间隙。方法.通过积分粒子轨道内的槽隙,我们计算的能量依赖的光子天空图在无线电波段(MHz-GHz)和在γ射线波段(MeV/GeV)的单能分布函数的轻子。结果我们获得了许多细节的能量依赖的光变曲线和相位分辨光谱从无线电波长的伽马射线能量。我们选择射电发射粒子的洛伦兹因子γ = 30,伽马射线发射粒子的γ = 10^7,我们发现了能够解释多波长脉冲星观测结果的真实光谱。

英文摘要:

Context. Pulsars are detected as broadband electromagnetic emitters from the radio wavelength up to high and very high energy in the MeV/GeV and sometimes even in the TeV range. Multi-wavelength phase-resolved spectra and light curves offer an unrivalled opportunity to understand their underlying radiation mechanisms and to localize their emission sites and therefore the particle acceleration regions. Aims. In this paper, we compute pulsars multi-wavelength phase-resolved light-curves and spectra assuming that curvature radiation operates from inside the magnetosphere of a rotating vacuum magnet. Radio emission arises from the polar caps whereas gamma-ray energy emanates from the slot gaps in the vicinity of the separatrix between closed and open field lines. Methods. By integrating particle trajectories within the slot gaps, we compute energy dependent photon sky maps in the radio band (MHz-GHz) and in the gamma-ray band (MeV/GeV) for mono-energetic distribution functions of leptons. Results. We obtained many details of the energy dependent light curves and phase-resolved spectra from the radio wavelength up to the gamma-ray energies. Choosing Lorentz factors of γ = 30 for radio emitting particles and γ = 10^7 for gamma-ray emitting particles, we found realistic spectra accounting for the wealth of multi-wavelength pulsar observations.

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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