## 2019-01-11 01:55:34 Source: Science and Technology Daily

Line between words

Li Yong

Occasionally, Chandrasekhar's Chinese translation of the cover of the Black Hole Mathematical Theory (2018) is the same series from Landau's book, but it is the first appearance. The original book was published 36 years ago and is now famous but has a small flow rate. Many people know that it does not read it.

It takes a lot of effort to read this book, and it's easy to get lost in the jungle of formulas. I want to find a way to move directly to the result, but there is no shadow in the result because the results are hidden in the equation. Chandrasekhar loves the equation and loves to die. Most physicists consider physical properties from equations. Astrophysicists use only equations to solve current problems, and he sees equations as equations, and their meanings are seen from the structure. He knows that his book is hard to read by telling readers that his logical path must be vigorous enough to keep up, sometimes from 50 steps to the next step, so as not to be lazy. His deduction is filled with six notebooks, over 600 pages, hidden in the University of Chicago's library.

At the time of Chandrasekhar University, he began to "count the stars". At the age of 18 in 1928 he met Sommerfeld, the author of atomic structures and spectroscopy at the University of Madras in India. Sammerfeld told him that things in the book were out of date and that they should learn a new quantum theory. He then read Fowler's "On Dense Matter" and Eddington's "The Internal Structure of the Star." At age 19, he calculated the critical mass of the white dwarf on the ship going to Cambridge for graduate students, subverting Eddington's results , but unfortunately became the "in an attempt to kill the old Don Quixote" in the eyes of all. His and Eddington's history is quite similar to the history of Shaoxia and the martial arts, and is common in science and in the rivers. But in commemoration of Eddington's hundredth birthday, Chandrasekhar still praised Eddington as the greatest astrophysicist of the day and a spokesman for general relativity.

Chandrasekhar left the astral study in 1939. After more than 20 years he returned to the general theory of relativity (GR). In 1962 he participated in GR3 (the third general theory of relativity and gravitation) held in Warsaw as a primary student . Singularity, energy theorem, gravitational wave, but no black hole. Penrose's space-time map and the Grammy figure of the gravitational force first showed their faces at the meeting, Chandrasekhar had already been gravitational, and now he began to worry about how GR affects the stability of the gravitational body. Although he was "late" (51 years), he reached the golden age of the GR and the black hole. At that time, several small partners were attacking GR (mainly the Zellovich group from the Soviet Union and the Wheeler group and the Emma group in the United States), and they found an interesting question: the rotating black hole would be self-driven. Tearing Young Teukolsky developed a method of perturbation, and Starobinsky and others used computational simulations to prove that rotating black holes are always stable. Regrettably, they did not find a suitable mathematical form and went to the middle of the path, rushing to the black hole of Hawking's radiation. Thus, Chandrasekhar began to pierce the jungle of equations in 1975, retiring for eight years and drawing his rococo image. In 1983, he published The Mathematical Theory of Black Hole, and shared the Nobel Prize with William A. Fowler for his achievements in the structure and evolution of the stars.

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