极端高频峰状 BL Lacertae 1ES 1218+304 多波长发射的莱普顿-哈德龙模型

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS Galaxies Pub Date : 2023-12-29 DOI:10.3390/galaxies12010002

Wenjing Dong, Qian Dong, Yonggang Zheng

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引用次数: 0

摘要

我们建立了一个轻子-强子模型，用于解释来自遥远耀星的超高能量（VHE）硬光谱的可能起源。该模型包括同步自康普顿（SSC）和强子成分。轻子成分包括同步辐射和相对论电子的反康普顿散射。对于强子成分，我们考虑质子同步辐射，并研究质子与同步辐射软光子或宇宙微波背景（CMB）光子的相互作用。在采用 1ES 1218+304 的观测光谱参数化后，我们得到了以下结果：（1）模型能够匹配 1ES 1218+304 的光谱能量分布；（2）我们发现在 Ep≈1010∼1017eV 时，π0→γ 射线过程贡献了大部分次级光子；（3）质子与低能光子的相互作用可能发生在喷流内部或外部。

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A Lepton–Hadron Model for the Multi-Wavelength Emission from Extreme High-Frequency Peaked BL Lacertae 1ES 1218+304

We develop a lepton–hadron model for the possible origin of hard very high energy (VHE) spectra from a distant blazar. The model includes synchrotron self-Compton (SSC) and hadronic components. The lepton components include synchrotron radiation and inverse Compton scattering of relativistic electrons. For the hadronic components, we consider proton synchrotron radiation and investigate the interaction of protons with the synchrotron emission soft photons or cosmic microwave background (CMB) photons. Upon adopting the parametrization of the observed spectrum of 1ES 1218+304, we obtain the following results: (1) the model is able to match the spectral energy distribution of 1ES 1218+304; (2) we find that in Ep≈1010∼1017eV, the π0→γ-ray process contributes the majority of the secondary photons; and (3) the interaction of protons with the low-energy photons may occur in or outside the jet.

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来源期刊

Galaxies Physics and Astronomy-Astronomy and Astrophysics

CiteScore

4.90

自引率

12.00%

发文量

100

审稿时长

11 weeks

期刊介绍： Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.