Comparison of Different Types of Black Holes

Abstract

With the deeper exploration on black hole, more and more categories of black holes are defined by astronomers and physicists. The article will discuss the differences in detection and process of accretion between the binary black holes and isolated black holes through analysing previous researches on black holes. To search for binary black holes, whose companion may be luminous, classical methods include spectrum test and calculation of the operation of binary star system are applied. On the other hand, the state-or-art facilities HST are used to detect them based on gravitational lens effect. These two different sorts of black holes also have their unique process of accretion. The binary black holes absorb particles from the stellar wind which is given out by their companion, forming two “minidisk”. The process is accompanied with strong emission of X-ray. Meanwhile, the accretion of isolated black hole forms only one ring of gas. The accretion flow is mostly weak and radioactively inefficient. The reason for these differences can be their separate optical features and relationships with environment. It is aimed at distinguishing the two kinds of black holes with different framework, making them easier to identify only with optical evidence or data on radioactive emission. Therefore, it’s easy to tell the infer structure from evidence that astronomers can comparatively easier obtain about black holes, which is beneficial for further studies about black holes internal structure details. These results shed light on guiding further exploration of black holes.