The Breakthrough Listen Search for Intelligent Life: Searching Boyajian's Star for Laser Line Emission
The Breakthrough Listen Search for Intelligent Life: Searching Boyajian's Star for Laser Line Emission
复制标题
寻找智能生命的突破性聆听：寻找博雅健星的激光线发射
DOI：
10.1088/1538-3873/aafe86
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发表时间：
2018
影响因子：
3.5
通讯作者：
N. Gizani
中科院分区：
文献类型：
--
作者：
D. Lipman;H. Isaacson;A. Siemion;M. Lebofsky;D. Price;D. MacMahon;S. Croft;D. DeBoer;J. Hickish;D. Werthimer;G. Hellbourg;J. E. Enriquez;N. Gizani
博亚坚的星星（KIC 8462852）受到了极大的关注，这是由于开普勒航天器和随后的地面观测发现了它不寻常的周期性亮度波动。光度测量值下降的可能解释包括星际或星周尘埃，并推测可能是人造巨型结构造成的。我们分析了177个高分辨率光谱的博雅坚的星星，努力探测潜在的激光信号从外星文明。这些光谱是由利克天文台的自动行星探测器（APF）望远镜作为突破聆听项目的一部分获得的，覆盖了374至970 nm的可见光波长范围。我们计算出，有源滤波器将能够检测功率大于约24兆瓦的激光在博雅坚的星星的距离，d = 1470 ly。分析中的最佳候选者都可以解释为宇宙射线撞击，恒星发射线或大气气辉发射线。
Boyajian's Star (KIC 8462852) has received significant attention, due to its unusual periodic brightness fluctuations detected by the Kepler spacecraft and subsequent ground-based observations. Possible explanations for the dips in the photometric measurements include interstellar or circumstellar dust, and it has been speculated that an artificial megastructure could be responsible. We analyze 177 high-resolution spectra of Boyajian’s Star in an effort to detect potential laser signals from extraterrestrial civilizations. The spectra were obtained by the Lick Observatory’s Automated Planet Finder (APF) telescope as part of the Breakthrough Listen Project, and cover the wavelength range of visible light from 374 to 970 nm. We calculate that the APF would be capable of detecting lasers of power greater than approximately 24 MW at the distance of Boyajian’s Star, d = 1470 ly. The top candidates from the analysis can all be explained as either cosmic-ray hits, stellar emission lines or atmospheric airglow emission lines.