First Very Long Baseline Interferometry Detections at 870 μm
文献类型：期刊论文
| 作者 | Raymond,Alexander W.147,148,149; Doeleman,Sheperd S.148,149; Asada,Keiichi146; Blackburn,Lindy148,149; Bower,Geoffrey C.144,145; Bremer,Michael143; Broguiere,Dominique143; Chen,Ming-Tang146; Crew,Geoffrey B.142; Dornbusch,Sven141 |
| 刊名 | The Astronomical Journal
 |
| 出版日期 | 2024-08-27 |
| 卷号 | 168期号:3 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/ad5bdb |
| 英文摘要 | Abstract The first very long baseline interferometry (VLBI) detections at 870 μm wavelength (345 GHz frequency) are reported, achieving the highest diffraction-limited angular resolution yet obtained from the surface of the Earth and the highest-frequency example of the VLBI technique to date. These include strong detections for multiple sources observed on intercontinental baselines between telescopes in Chile, Hawaii, and Spain, obtained during observations in 2018 October. The longest-baseline detections approach 11 Gλ, corresponding to an angular resolution, or fringe spacing, of 19 μas. The Allan deviation of the visibility phase at 870 μm is comparable to that at 1.3 mm on the relevant integration timescales between 2 and 100 s. The detections confirm that the sensitivity and signal chain stability of stations in the Event Horizon Telescope (EHT) array are suitable for VLBI observations at 870 μm. Operation at this short wavelength, combined with anticipated enhancements of the EHT, will lead to a unique high angular resolution instrument for black hole studies, capable of resolving the event horizons of supermassive black holes in both space and time. |
| 语种 | 英语 |
| WOS记录号 | IOP:AJ_168_3_130 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27604]  |
| 专题 | 星系类星体研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Department of Physics and Astronomy, Michigan State University, 567 Wilson Road, East Lansing, MI 48824, USA 2.Astronomy Department, University of Science and Technology of China, Hefei 230026, People's Republic of China 3.Center for Astronomy and Astrophysics and Department of Physics, Fudan University, Shanghai 200438, People's Republic of China 4.Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey, RH5 6NT, UK 5.School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, People's Republic of China 6.School of Natural Sciences, Institute for Advanced Study, 1 Einstein Drive, Princeton, NJ 08540, USA 7.Radboud Excellence Fellow of Radboud University, Nijmegen, The Netherlands 8.Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Finland 9.Physics Department, Brandeis University, 415 South Street, Waltham, MA 02453, USA 10.University of New Mexico, Department of Physics and Astronomy, Albuquerque, NM 87131, USA |
| 推荐引用方式 GB/T 7714 | Raymond,Alexander W.,Doeleman,Sheperd S.,Asada,Keiichi,et al. First Very Long Baseline Interferometry Detections at 870 μm[J]. The Astronomical Journal,2024,168(3). |
| APA | Raymond,Alexander W..,Doeleman,Sheperd S..,Asada,Keiichi.,Blackburn,Lindy.,Bower,Geoffrey C..,...&毛基荣.(2024).First Very Long Baseline Interferometry Detections at 870 μm.The Astronomical Journal,168(3). |
| MLA | Raymond,Alexander W.,et al."First Very Long Baseline Interferometry Detections at 870 μm".The Astronomical Journal 168.3(2024). |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。