The most convincing evidence of black holes comes from research into binary star systems 黑洞最強有力的證據(jù)來自對雙星系的研究。
In some binary star systems, gas escapes from one star and is captured by the gravity of the other to form a disk 某些雙星系統(tǒng)中,當從一個恒星逃出的氣體被另一個星體的重力捕獲時,也會形成盤狀結(jié)構(gòu)。
Many stars orbit around other stars under the mutual gravitational attractions . if two stars orbit around one another, they form a binary star system 在天空中,不少恒星會在相互的引力下互相繞著對方運行,假若系統(tǒng)只有兩顆星,我們會稱之為
But there are images of binary star systems consisting of one normal star and one black hole, and of the central regions of galaxies that are believed to contain black holes 但是有由一個黑洞和一個正常恒星組成的雙子星系統(tǒng)的圖像,和被認為包含有黑洞的星系中心區(qū)域的圖像。
Analysis of the x-ray data shows that the point sources are associated with binary star systems that contain a neutron star or black hole that is pulling matter away from a normal star 對x射線數(shù)據(jù)的分析表明,點源與包含有中子星或黑洞(它們正從正常恒星吸走物質(zhì))的雙星系統(tǒng)成協(xié)。
Sometimes, in a binary star system, one star will pass in front of the other producing what we call eclipsing binary . it can be treated as a special kind of visual binary . eclipsing binary systems are variable stars see below :有些雙星系統(tǒng),其中一顆星會在另一顆星前經(jīng)過,產(chǎn)生周期性的光度變化,我們稱這種雙星為食雙星,基本上我們可以把食雙星看成為目視雙星的一種。
These events include two kinds of stellar explosions : ( 1 ) nova explosions, in which one of the two members of a binary star system hurls dust and gas into space; ( 2 ) much more violent supernova explosions, in which a star collapses, then throws off most of its matter 這些事件包括兩種類型的恒星爆發(fā):(1)新星爆發(fā),雙星系統(tǒng)中的一員將氣體和塵埃猛烈拋入太空;(2)更為猛烈的超新星爆發(fā),那是一顆恒星崩潰時幾乎把它所有物質(zhì)都拋出去了。