2227 dual scintillation density instrument , which is a special - purpose instrument to measure ray strength a certain distance from the source , can help to get exact formation volume density 摘要2227补偿密度测井仪是测量离源一定距离处的射线强度的专门仪器,能够得到真实的地层体积密度。
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。