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The Story of Collapsing StarsBlack Holes, Naked Singularities, and the Cosmic Play of Quantum Gravity$
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Pankaj S. Joshi

Print publication date: 2015

Print ISBN-13: 9780199686766

Published to Oxford Scholarship Online: January 2015

DOI: 10.1093/acprof:oso/9780199686766.001.0001

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Cosmic Conundrums

Cosmic Conundrums

(p.128) 7 Cosmic Conundrums
The Story of Collapsing Stars

Pankaj S. Joshi

Oxford University Press

The occurrence of naked singularities in gravitational collapse gives rise to several most intriguing questions and cosmic puzzles. Profound issues such as the status of the cosmic censorship hypothesis ruling out naked singularities, and those related to the nature and structure of naked singularities arise. Some of these are discussed in this chapter, together with a discussion on various questions that come up about naked singularities and gravitational collapse. A major issue here is whether naked singularities are stable and generic, if they form in realistic collapse in astrophysical scenarios. The chapter discusses our recent understanding on this issue. Several most intriguing questions arise on the physics and implications of naked singularities, such as the nature of spacetime in their vicinity, causality violation if any near the same, possible energy emissions from these regions, and the quantum gravity effects near the same. these problems are discussed and debated here in this chapter.

Keywords:   gravitational collapse, structure of naked singularities, stability and genericity, cosmic puzzles on singularities

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