| 1. | As a companion star orbits its primary, it alternately approaches and recedes from the earth .
当伴星围绕着主星运转时，它交替地朝着地球或背离地球运转。 |
| 2. | A companion star is a perfect source of infalling material for a black hole
伴星是物质下陷形成黑洞的一个极好的物质来源。 |
| 3. | More than 60 % of the stars in the milky way have a companion star around which they orbit
银河中超过六成的恒星在其运行轨道附近存在伴星。 |
| 4. | 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。 |
| 5. | However , it is never an easy task to determine the mass of companion stars in binary systems just by way of spectral analysis
不过，从光谱分析以决定黑暗的伴星的质量并不是一项容易的观测工作。 |
| 6. | The material drawn tidally from the large dying star thus forms a tail that chases the denser companion star from behind
于是，从大的垂死恒星如潮汐般涌出的物质，便形成了一条尾巴，紧追在致密伴星之后。 |
| 7. | If the neutron star is in a globular cluster , it will perform an erratic dance around the center of the cluster , picking up a companion star which it may later swap for another
如果这个中子星处于球状星团中，它就会围绕星团中心作不规则的“舞蹈”运动，俘获一个“舞伴” （伴星） ，而且将来还可能更换它的伴侣。 |
| 8. | Several explanations have been proposed , including cycles of magnetic activity somewhat similar to our own sun ' s sunspot cycle , the action of companion stars orbiting around the dying star , and stellar pulsations
现在有几个被提出的解释,包括像我们自己的太阳黑子周期的磁场周期活动，围绕衰老的恒星轨道有规律运动的伴星。 |
| 9. | Studies show that , in a binary system , huge energy is released when matter of companion star fall onto the surface of neutron star . on the contrary , when matter falls into black hole , it together with the energy generated will disappear behind the event horizon . for that reason , x rays emitted by neutron star binaries are stronger and their spectra exhibit special characteristics
研究发现，在双星系统中，伴星的物质掉落中子星的表面时会释放巨大能量，而物质掉落黑洞时，则会与它所拥有能量一同消失于视界之中因此含有中子星的双星系统所发出的x射线强度总是较高，而光谱也有不同的特徵。 |
| 10. | Black holes are invisible by definition , yet the gas and dust falling into a black hole are heated to high temperatures and glow furiously . if there is a companion star orbiting around a black hole , astronomers can investigate the central black hole by examining the accreting matters from the nearby companion star
顾名思义，黑洞漆黑一片，目不可见，但其实那些堕入黑洞的气体和尘埃，会因受热而发出炽烈的光芒，因此假如黑洞有伴星的话，天文学家便可透过观测伴星物质流入黑洞时所形成的吸积盘，对中心的吞噬者进行研究。 |
