VLBI20-30：未来十年的科学路线图--欧洲VLBI网络的未来
VLBI20-30: a scientific roadmap for the next decade -- The future of the European VLBI Network
摘要：
本白皮书描述了甚长基线干涉测量（VLBI）的科学案例，并为欧洲VLBI网络（EVN）的升级路径提供了建议。EVN是一个分布式长基线射电干涉阵列，在天文学研究的最前沿工作。最近的结果，以及本愿景文件中概述的新科学可能性，证明了EVN产生新的和令人兴奋的结果的潜力，这些结果将改变我们对宇宙的看法。与e-MERLIN一起，EVN提供了一系列基线长度，允许在广泛的空间尺度上对微弱射电源进行独特的研究。科学案例分六章进行审查，涵盖以下广泛领域：宇宙学、星系形成和演化、活动星系核的最内层区域、爆炸现象和瞬变、银河系中的恒星和恒星脉泽、天体参考系和空间应用。本文件最后确定了与其他无线电以及多波段/多信使工具的协同作用，并提出了未来改进的建议。附录简要介绍了其他射电VLBI阵列、EVN发展的技术框架和100 GHz以下天体物理学感兴趣的谱线。该文件包括一个非专业人员词汇表，并在最后列出了缩略语。
英文摘要：
This white paper describes the science case for Very Long Baseline Interferometry (VLBI) and provides suggestions towards upgrade paths for the European VLBI Network (EVN). The EVN is a distributed long-baseline radio interferometric array, that operates at the very forefront of astronomical research. Recent results, together with the new science possibilities outlined in this vision document, demonstrate the EVN's potential to generate new and exciting results that will transform our view of the cosmos. Together with e-MERLIN, the EVN provides a range of baseline lengths that permit unique studies of faint radio sources to be made over a wide range of spatial scales. The science cases are reviewed in six chapters that cover the following broad areas: cosmology, galaxy formation and evolution, innermost regions of active galactic nuclei, explosive phenomena and transients, stars and stellar masers in the Milky Way, celestial reference frames and space applications. The document concludes with identifying the synergies with other radio, as well as multi-band/multi-messenger instruments, and provide the recommendations for future improvements. The appendices briefly describe other radio VLBI arrays, the technological framework for EVN developments, and a selection of spectral lines of astrophysical interest below 100 GHz. The document includes a glossary for non-specialists, and a list of acronyms at the end.
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