作为超高能粒子潜在加速器的银河系微blazar
A Galactic microblazar as a potential accelerator of ultra-high-energy particles
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中文总结 AI 辅助
研究证认IRAS 18293-0941为潜在的银河系微blazar，其可能与超高能源LHAASO J1831-1007u*相关，有助完善银河系天体分类并深化对最高能现象的理解。
中文摘要 AI 辅助
背景：来自X射线双星且取向极接近视线的持续喷流可被视为blazar的银河系对应体，即“微blazar”，这类天体预计会驱动伽马射线源。目的：我们拟评估一个符合该类天体诸多要求的候选体IRAS 18293-0941，确认其是否为该类天体的真实成员。方法：对该候选源开展了密集的多波段观测与理论研究。结果：该系统具有双星典型的测光与光谱特性，呈现出清晰的准直单侧射电辐射，符合相对论运动沿较小抛射角运动的效应；未观测到快速变光，可能被致密星周包层平滑；构建了一致的物理场景，也提升了其与邻近超高能源LHAASO J1831-1007u*可能存在关联的可信度。结论：我们的证认结果不仅有助于填补银河系天体分类学的空白，还可能强化微blazar与微类星体家族在理解银河系最高能现象中的作用。
英文摘要
Context. Persistent jets from X-ray binaries which are aligned very close to the line of sight could be considered to be Galactic equivalents of blazars, or 'microblazars'. They are also expected to power gamma-ray sources. Aims. We intend to assess a serious candidate apparently fulfilling many of the requirements to be considered a genuine member of this class: IRAS 18293-0941. Methods. An intense multi-wavelength observational and theoretical study has been carried out on our proposed candidate source. Results. With photometric and spectroscopic properties typical of a binary star, this system exhibits clear collimated and one-sided radio emission matching the effects of relativistic motion along a reduced ejection angle. Only fast variability is not observed possibly smoothed by a dense circumstellar envelope. A physical scenario is consistently modeled that also gives credibility to its likely connection with LHAASO J1831-1007u*, an ultra-high-energy source in its immediate vicinity. Conclusions. Our reported identification not only helps to fill a gap in Galactic taxonomy, but also potentially strengthens the role of the microblazar and microquasar families in our understanding of the most energetic Milky Way phenomena.
发表机构
- Universidad de Jaén（哈恩大学）
- Joint Institute for VLBI ERIC（甚长基线干涉测量联合研究所）
- ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所）
- Instituto Argentino de Radioastronomía（阿根廷射电天文研究所）
- Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata（拉普拉塔国立大学天文学与地球物理学院）
- Universitat de Barcelona（巴塞罗那大学）
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