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Lecture 36 – Quasars and Radio Galaxies

Explore the fascinating world of quasars and radio galaxies, uncovering their appearance and the phenomena occurring within them. Delve into the current model for luminous extragalactic radio sources and the role of supermassive black holes in generating powerful jets.

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Lecture 36 – Quasars and Radio Galaxies

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  1. Lecture 36 – Quasars and Radio Galaxies • What is going on in radio galaxies and quasars? • What accounts for the appearance of quasars (dominated by brilliant, point-like source of radiation).

  2. Hints in the sky: 3C175 (quasar) and M87 (galaxy)

  3. M87

  4. Current Model for Luminous Extragalactic Radio Sources Supermassive black hole (1E+09 solar masses) surrounded by huge accretion disk generates jets which penetrates tens or hundreds of kiloparsecs into space

  5. At the center

  6. A quasar or radio galaxy

  7. Summary: the structure of a radio source

  8. These sources are luminous enough to be seen at the edge of the universe

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