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Black Hole (BH)

Black Hole (BH). Introduction to BH Motivation to study BH Formation of BH Cool slides Size of BH Properties of BH Evidence for BH. Definition of BH Motivation to study BH Fascinating ideas (spacetime curvature, event horizon, worm hole etc)

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Black Hole (BH)

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  1. Black Hole (BH) • Introduction to BH • Motivation to study BH • Formation of BH • Cool slides • Size of BH • Properties of BH • Evidence for BH

  2. Definition of BH • Motivation to study BH • Fascinating ideas (spacetime curvature, event horizon, worm hole etc) • Astronomical observations (quasar, pulsar, AGN, GRB etc) • Quantum Gravity • Astrophysics & High energy particles

  3. Formation of BH • White Dwarf, Pauli Exclusion, electron degeneracy • Temperature >100,000 K • Density • Earth size White Dwarf - 1E9 kg/m3 • Earth - 5.4E3 kg/m3 • Chandrashekar limit 1.4 Solar Mass • Supernova Explosion (>10 Solar Mass) • Neutron star, neutron degeneracy and pulsar • Black Hole and quasar

  4. An Artist's conception of the evolution of our sun through the red giant stage and onto a white dwarf

  5. Birth of a Neutron Star

  6. Supernova explosion -Cas A as seen by the Chandra X-ray Observatory

  7. Vela Pulsar Reveals a Compact Nebula Created by a Shooting Neutron Star

  8. More Red Quasars May Loom in the Universe

  9. Simulation of Black Hole

  10. Black hole in galaxy M87, image from Hubble Space Telescope.

  11. Size of BH - Schwarzschild Radius G=Gravitational Constant For the sun,

  12. Properties of BH • Space time curvature • Compactness and warpage of spacetime • Red shift of light • Event Horizon • boundary of no return • Tidal forces • Singularities • 1965 Roger Penrose • Static Black Hole, white hole and worm hole • Naked Singularity • cosmic censorship law • Image frozen in time • Black Hole laws • Black Holes have no hair • Area of Event Horizon and entropy • Hawking Radiation, loss of information, Conservation law of Baryon number

  13. Evidence for BH • Binary Systems • Normal star and a BH • BH around BH • Active Galactic Nucleus • What are we observing when we are looking for a BH?

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