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Black Holes : Imaginary Ideas Of Their Structure
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16. White dwarf compact much of the mass of the star into a volume of the size of the Earth, while neutron stars are smaller still only 20 kilometres across.
[Black Holes, Quasars and The Univrse by Harry L. Shipman, p.25). 17. Some investigators believe that the maximum mass of neutron stars is quite small about 0.7 M . Others with different ideas of how neutrons interact, believe that the limiting mass is higher about 2.2 M.
The crucial question now becomes. Are there any stars that leave remnant with more mass than the magic figure of three solar masses? (The maximum mass of a neutron star is probably less than this, but I stick with the figure three because it is certain that no evolved star can have more mass than that and remain stable).
[Ibidem, p.60]. 18. A black-hole is not shown because the star would have to be over 3M initially before it could become a black-hole. Its final size would be similar to that of neutron star.
[Black Holes', by J.P.Luminet, p. 103] 19. During the night of 23-24 February, 1987, the Canadian astronomer, lan Shelton, working at the Las Companas Observatory in Chile, had the extraordinary good fortune to be the first professional' to discover a supernova (a night assistant had just noticed it with the naked eye as a 4th magnitude star). The Large Magellanic Cloud, in which the supernova occurred, is an irregular galaxy. A telegram was sent urgently to the Bureau of the International Astronomical Union, and caused an immediate sensation in the astronomical community
[Ibidem, p.94). 20. The density varies from 1 tonne/cm3 to 4,00,000 tonnes/cm).
[Ibidem, p. 110]. 21. A 10 M. spherical black-hole has an area of 5650 square kilometres comparable to the size of a country. Similarly the surface gravity is inversely proportional to the mass. A 10M, spherical black-hole has a surface gravity 150 billion times that of the Earth. [Ibidem, p. 196)
22. A typical mini black-hole of 1015 grams, the size of a proton, has a temperature of trillion K. [Ibidem, p.210).
23. Sthāngasūtravrtti P.432-433 (Sūtra-623)
24. Cosmological Tuths Of Ancient Indian Religions, Jainism And Hinduism by Niranjan Vakharia, Chapter XXVI, p. 234, 235.
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