The Hunt for Rogue Planets: The Galaxy May Hold a Trillion Wandering, Sunless Worlds. So How Do We Find Them?

IF 2.6 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Spectrum Pub Date : 2024-08-05 DOI:10.1109/MSPEC.2024.10623187

Corey S. Powell

引用次数: 0

Abstract

ON 29 OCTOBER 2020, astronomer Przemek Mróz from the University of Warsaw and an international group of collaborators reported a peculiar flicker of light originating from halfway across our galaxy. The signal, designated OGLE-2016-BLG-1928, was extremely subtle. It caused a single star to brighten and dim by about 20 percent over a 6-hour period, just once, never repeated. But the implication of that little flicker was huge: It was the first credible sighting of an Earth-size “rogue planet,” a world untethered to any star, floating freely between the stars.

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寻找流浪行星银河系可能有上万亿个没有太阳的流浪世界。那么我们该如何找到它们呢？

2020 年 10 月 29 日，来自华沙大学的天文学家 Przemek Mróz 和一个国际合作小组报告了一个奇特的闪光信号，它来自银河系的另一端。这个信号被命名为 OGLE-2016-BLG-1928，非常微妙。它导致一颗恒星在6小时内变亮和变暗约20%，仅此一次，从未重复。但这一微弱的闪烁却蕴含着巨大的意义：这是首次可信地看到一颗地球大小的 "流氓行星"，一个不与任何恒星相连、在恒星之间自由漂浮的世界。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Spectrum 工程技术-工程：电子与电气

CiteScore

2.50

自引率

0.00%

发文量

254

审稿时长

4-8 weeks

期刊介绍： IEEE Spectrum Magazine, the flagship publication of the IEEE, explores the development, applications and implications of new technologies. It anticipates trends in engineering, science, and technology, and provides a forum for understanding, discussion and leadership in these areas. IEEE Spectrum is the world''s leading engineering and scientific magazine. Read by over 300,000 engineers worldwide, Spectrum provides international coverage of all technical issues and advances in computers, communications, and electronics. Written in clear, concise language for the non-specialist, Spectrum''s high editorial standards and worldwide resources ensure technical accuracy and state-of-the-art relevance.