Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS

Galaxies Pub Date : 2023-10-18 DOI:10.3390/galaxies11050107

Sheperd S. Doeleman, John Barrett, Lindy Blackburn, Katherine L. Bouman, Avery E. Broderick, Ryan Chaves, Vincent L. Fish, Garret Fitzpatrick, Mark Freeman, Antonio Fuentes, José L. Gómez, Kari Haworth, Janice Houston, Sara Issaoun, Michael D. Johnson, Mark Kettenis, Laurent Loinard, Neil Nagar, Gopal Narayanan, Aaron Oppenheimer, Daniel C. M. Palumbo, Nimesh Patel, Dominic W. Pesce, Alexander W. Raymond, Freek Roelofs, Ranjani Srinivasan, Paul Tiede, Jonathan Weintroub, Maciek Wielgus

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引用次数: 5

Abstract

We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (EHT). This program—the next-generation Event Horizon Telescope (ngEHT)—will form a networked global array of radio dishes capable of making high-fidelity real-time movies of supermassive black holes (SMBH) and their emanating jets. This builds upon the EHT principally by deploying additional modest-diameter dishes to optimized geographic locations to enhance the current global mm/submm wavelength Very Long Baseline Interferometric (VLBI) array, which has, to date, utilized mostly pre-existing radio telescopes. The ngEHT program further focuses on observing at three frequencies simultaneously for increased sensitivity and Fourier spatial frequency coverage. Here, the concept, science goals, design considerations, station siting, and instrument prototyping are discussed, and a preliminary reference array to be implemented in phases is described.

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新一代视界望远镜参考阵列及设计考虑

我们描述了设计、构建和实施事件视界望远镜(EHT)变革性增强的过程。这个项目——下一代事件视界望远镜(ngEHT)——将形成一个联网的全球射电天线阵列，能够拍摄超大质量黑洞(SMBH)及其喷射流的高保真实时影像。这主要是建立在EHT的基础上，通过在优化的地理位置部署额外的中等直径天线来增强当前全球毫米/亚毫米波长甚长基线干涉(VLBI)阵列，该阵列迄今为止主要利用了现有的射电望远镜。ngEHT计划进一步侧重于同时观察三个频率，以提高灵敏度和傅里叶空间频率覆盖。在这里，讨论了概念、科学目标、设计考虑、站点选址和仪器原型，并描述了一个初步的参考阵列，将分阶段实施。

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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.