Radio loud

IF 12.9 1区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Nature Astronomy Pub Date : 2024-10-10 DOI:10.1038/s41550-024-02399-1
Paul Woods
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太空探索技术公司(SpaceX)的 "星链"(Starlink)等卫星巨型恒星的明亮轨迹对光学天文图像造成的污染已被详细记录在案。来自这些卫星的无线电干扰也是一个重要问题,因为尽管它们以 10.7-12.7 千兆赫的指定频率传输数据,但已观察到卫星的电子设备泄漏到用于天文学的较低频率波段。尽管有了这些先验知识,但大约 18 个月前开始运行的第二代 Starlink 卫星的泄漏似乎并没有得到改善:Cees Bassa及其同事利用来自LOFAR射电望远镜的数据表明,这些卫星无意中泄漏的频率与前几代卫星基本相同,但泄漏强度是之前所见的32倍。在高波段观测中,从第二代星链卫星上探测到的信号与前几代明显不同,其宽带发射明显更亮,达到约100焦耳。在低频段,v2 卫星的发射功率通量密度约为 1,300 Jy。在低频段完全没有探测到早期的星联卫星。
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来源期刊
Nature Astronomy
Nature Astronomy Physics and Astronomy-Astronomy and Astrophysics
CiteScore
19.50
自引率
2.80%
发文量
252
期刊介绍: Nature Astronomy, the oldest science, has played a significant role in the history of Nature. Throughout the years, pioneering discoveries such as the first quasar, exoplanet, and understanding of spiral nebulae have been reported in the journal. With the introduction of Nature Astronomy, the field now receives expanded coverage, welcoming research in astronomy, astrophysics, and planetary science. The primary objective is to encourage closer collaboration among researchers in these related areas. Similar to other journals under the Nature brand, Nature Astronomy boasts a devoted team of professional editors, ensuring fairness and rigorous peer-review processes. The journal maintains high standards in copy-editing and production, ensuring timely publication and editorial independence. In addition to original research, Nature Astronomy publishes a wide range of content, including Comments, Reviews, News and Views, Features, and Correspondence. This diverse collection covers various disciplines within astronomy and includes contributions from a diverse range of voices.
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