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Jets discovered in Cygnus A
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The Realm of Supermassive Black Holes - Lecture 13
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- 1 Date: Wed, 26 June 2019, 10:00 to
- 2 Neutron Stars and Black Holes Lecture -13: The Realm of the Supermassive Black Holes
- 3 Realm of the Supermassive Black Holes
- 4 The Radio Galaxy Cygnus A
- 5 Cliff top Interferometer
- 6 Intensity Interferometer
- 7 Hanbury-Brown & Twiss Intensity Interferometer
- 8 Michelson Interferometer
- 9 Intensity Interferometer of Hanbury-Brown
- 10 The Radio Galaxy Cygnus A
- 11 Quest for high angular resolution
- 12 Origin of the radio lobes
- 13 Jets discovered in Cygnus A
- 14 Very Long Baseline Interferometry
- 15 The Global VLBI-Array
- 16 CYGNUS A
- 17 One sided jets
- 18 M 87 The giant elliptical
- 19 NGC 6251
- 20 Proper time:
- 21 Doppler Shift
- 22 Doppler favoritism
- 23 Imagine a black hole at position A ejecting a blob in direction making an angle theta to the observer. Let the blob be moving with velocity v.
- 24 Superluminal motion
- 25 Apparent transverse velocity as a function of beta and theta
- 26 Superluminal Motion in the M87 Jet
- 27 To achieve sub-milli arc second resolution one uses intercontinental baseline interferometry.
- 28 Relativistic jets
- 29 Energy content in the radio lobes
- 30 Energy content
- 31 The central engines
- 32 Eddington Luminosity Limit
- 33 Thompson scattering cross section:
- 34 Variability of Quasars
- 35 Supermassive Black Holes
- 36 Accretion onto Supermassive Black Holes
- 37 Evidence for supermassive Black Holes
- 38 NGC 4258
- 39 Mega MASERS in NGC 4258
- 40 Stars orbiting the Galactic Centre Black Hole
- 41 Black Hole at the centre of Milky Way
- 42 The giant black hole at the center of M 87
- 43 M87 Base of Jet
- 44 Angular resolution required to resolve the event horizon of the central BH
- 45 VLBI at 1.3 mm
- 46 Event Horizon Telescope
- 47 VLBI at 1.3 mm with the EHT
- 48 Environment of the Black Hole
- 49 What does one expect to see with the EHT?
- 50 Motion of light near a nonrotating BH
- 51 What does one expect to see?
- 52 Comparison with simulations suggests that the torus is rotating CLOCKWISE around the spin axis of the BH
- 53 Summary of the conclusions
- 54 Has General Relativity finally been verified to a satisfactory extent?
- 55 S. Chandrasekhar:
- 56 X-Ray interferometry - in the near future - and, to a lesser extent, space based GW detectors hold out tantalizing prospects
- 57 Formation of supermassive black holes
- 58 Mergers
- 59 How did the original BHs form?
- 60 Supermassive stars
- 61 Stability of Matter
- 62 Stability of a star in General Relativity
- 63 Stability of a supermassive star in General Relativity
- 64 Next Lecture - Universe or Multiverse?!
- 65 Q&A
