致密天体的英文
compact object
例句与用法
- Macho massive compact halo
晕族大质量致密天体 - Accretion disks formed when compact objects suck in matters of companion stars may also betray the existence of black holes
另一个重要的观测对象是致密天体因为吸食伴星物质而形成的吸积盘。 - They found two events showing the shortening of pulsating cycle and decaying of radiations intensity . the signatures matched theories of what scientists would predict to see . when matter is falling so close to the event horizon , it will be circling the black hole with increasing speed and its light will rapidly dim as it is stretched by gravity to ever - longer wavelengths
研究人员分析了极大量来自致密天体天鹅座xr - 1的紫外线辐射，发现其中两组数据显示，辐射脉冲的周期随时间缩短，而其强度则随时间衰减至消失，这现象与一些物质在接近黑洞视界时绕著黑洞急促旋转，放出的辐射因为重力红移而衰减的情况相符。 - We take 3 . 5 solar masses as the benchmark for judging whether something is a black hole because we know we know that theoretically the mass of other compact objects like neutron star cannot exceed that maximum threshold . otherwise those bodies will collapse under their own gravitational force into black holes
我们以质量大于太阳的3 . 5倍作为判别黑洞的标准，是因为从理论上得知，其他致密天体如中子星的质量都不可能超越这个上限，否则它们便会因为本身的重力而塌缩成黑洞。 - Topics include : planets , planet formation ; stars , the sun , " normal " stars , star formation ; stellar evolution , supernovae , compact objects ( white dwarfs , neutron stars , and black holes ) , plusars , binary x - ray sources ; star clusters , globular and open clusters ; interstellar medium , gas , dust , magnetic fields , cosmic rays ; distance ladder ; galaxies , normal and active galaxies , jets ; gravitational lensing ; large scaling structure ; newtonian cosmology , dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis
课程的主题包含了：行星、行星形成；恒星、太阳、正常的恒星、恒星形成；恒星演化、超新星、致密天体(白矮星、中子星及黑洞) 、波霎、双x -射线源；星团、球状及疏散星团；星际介质、气体、尘埃、磁场、宇宙射线；距离阶梯；星系、正常及活跃星系、喷流；重力透镜；大尺度结构；牛顿宇宙学、宇宙的动力膨胀及温度发展历史；宇宙背景微波辐射；大霹雳核合成。
