AI 中文总结
研究利用SKA探测日球层湍流和无线电波传播效应，通过将观测与模拟比较量化效应，其高灵敏度有助于识别微弱射电结构，结合地面及天基仪器，将成为观测太阳射电辐射的关键工具。
AI 中文摘要
日球层中的密度湍流会影响来自宇宙任何地方的无线电光子，导致射电源的光谱和成像特性失真。太阳系外射电源有闪烁和角展宽现象，航天器的单色信号会发生光谱展宽。在通过等离子体发射机制激发的太阳射电爆发观测中，这种无线电波传播效应尤为显著。为量化该效应并从观测中分辨出真正的射电源特性，需要将详细观测与模拟进行比较。SKA探路者已取得重要进展，但也凸显了观测能力的不足。SKA无与伦比的灵敏度对于识别和区分精细微弱射电结构至关重要，它将成为观测太阳射电辐射的不可或缺工具，地面干涉仪和天基无线电仪器可对其进行补充。
英文摘要
Density turbulence in the heliosphere can impact traversing radio photons originating from anywhere in the universe, leading to distortions of both the spectroscopic and imaging properties of the radio sources. Extra-solar radio sources exhibit scintillation and angular broadening, while monochromatic signals from spacecraft are spectrally broadened. It was recently demonstrated that such impacts, referred to as radio-wave propagation effects, are particularly significant in observations of solar radio bursts excited through the plasma emission mechanism. A comparison of detailed observations with simulations is required in order to quantify the radio-wave propagation effects and disentangle the true radio-source properties from the observed ones, enabling the diagnosis of the heliospheric environment. Consequently, theoretical advancements and our ability to quantify the heliospheric turbulence depend on the quality and quantity of available observations. SKA pathfinders, like LOFAR, have been key to the significant progress recently achieved, but have also highlighted areas where the available observing capabilities are lacking. The SKA's unrivalled sensitivity will be crucial in identifying and distinguishing fine and faint radio structures, where our ability to model them defines whether we can accurately describe the heliospheric turbulence and deduce the fundamental properties of the radio sources. The SKA will be an indispensable tool in observing solar radio emissions from the Sun to beyond 1 au, complemented by ground-based interferometers that can reach frequencies down to the ionospheric cut-off at 10 MHz and space-based radio instruments which cover frequencies down to a few kHz.
CommentsPublished in Advancing Astrophysics with the SKA II (AASKAII), 2026 (arXiv:2606.20366). Report-no: AASKAII/Chrysaphi01. Advancing Astrophysics with the SKA II (AASKAII) outlines the transformative scientific advances that will be enabled by the SKA telescopes
