# 新西兰南方理工学院论文代写：黑洞

The concept of black hole has fascinated and perplexed scientists in history. To define black holes simply it can be said that it is an expanse in space-time that cannot connect with the outer cosmos. Once a particle enters into this region it cannot escape from this region (Shapiro & Teukolsky, 2008). The existence of these black holes or these “invisible” regions in space has many physical effects in space. The most notable significance is the thermal nature of the Hawking radiation (Frolov & Novikov, 1998). These are explored in this analysis. The concepts of black holes, types of black holes i.e. the stellar black holes, supermassive black holes and the intermediate black holes its formation theories, evolution and its detection of the black holes are discussed in detail in this report.

The terminology “Black Hole” was named by John Wheeler in 1967. The existence of the black hole and the studies regarding the black hole was however well before this term was coined (Frolov & Novikov, 1998). Black holes are the areas or region that cannot communicate of interact with the external universe owing to the very high density within the region. Once a particle enters near the black hole region it cannot escape from its gravitational pull (Redd, 2015). This is a very simple definition there are many parameters that needs to be added to comprehend the concept of black holes.

It can be concluded that the of Black hole is formed whenever the body mass of an object becomes lesser than the gravitational radius (rg) =2GM/C2 . Where, G is Newton’s gravitational constant M is the mass and the C is the speed of light.  (Frolov & Novikov, 1998)