论文标题
搜索Alpha Centauri AB的光学激光排放
A Search for Optical Laser Emission from Alpha Centauri AB
论文作者
论文摘要
通过检查2004年至2018年之间获得的15362光学高分辨率光谱，从Alpha Centauri A和B方向搜索激光光。没有任何光谱显示激光发射线。在3850至6900Å之间的所有波长中，两个恒星光谱的连续强度的阈值是10％。如果激光器具有至少1.4至5.4兆瓦的功率（取决于波长），并且位于1位视野（预测为1.3 au）中，则该搜索将从Alpha Cen B的方向揭示出光激光的光。对于alpha cen A，激光功率必须大3倍才能检测。还将检测到较小光圈的激光器，但需要更多的功率。考虑到所有光学调查，在寻找外星技术时正在出现一个不断增长的沙漠。
A search for laser light from the directions of Alpha Centauri A and B was performed by examining 15362 optical, high-resolution spectra obtained between 2004 and 2018. None of the spectra exhibit laser emission lines. The threshold was 10% of the continuum intensity of the spectra of both stars at all wavelengths between 3850 and 6900 Å. This search would have revealed optical laser light from the directions of Alpha Cen B if the laser had a power at least 1.4 to 5.4 MW (depending on wavelength) and was positioned within the 1 arcsecond field of view (projecting to 1.3 AU), for a benchmark 10-meter laser launcher. For Alpha Cen A, the laser power must be 3 times greater for detection. Lasers of smaller aperture would also have been detected but would require more power. Considering all optical surveys, a growing desert is emerging in the search for extraterrestrial technology.
