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Agn

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Transcript

  • 1. AGN By: Kyle Horvath
  • 2. Active Galactic Nuclei
    • Galaxies that release massive amounts of energy.
    • They are extremely luminous.
    • Emit radio waves and visible light.
    • AGN are usually classified into Quasars, Blazars, Radio Galaxies, and Starburst Galaxies, and Seyfert Galaxies.
  • 3. AGN Structure
    • Super massive Black Holes in the middle.
    • Black Holes are surrounded by the accretion disks.
    • Then the torus surrounds that.
    • Two relativistic jets .
  • 4. Super Massive Black Holes
    • A gravitational field in space so strong not even light can escape it.
    • The event horizon is the area which not even light can escape.
  • 5. Red Shift
    • Electromagnetic radiation that is shift towards red end of the spectrum
    • Red shift changes due to the expansion of the universe
    • Used in AGN to calculate distance, luminosity, velocity, and more.
  • 6. Quasar
    • The oldest and furthest galaxies in our universe.
    • Extremely bright.
    • Highly red shifted.
  • 7. Seyfert Galaxies
    • Bright Emission lines
    • Produce spectral line emission
    • Have types 1 and 2
    • Type 1 has both broad and narrow
    • Type 2 has just narrow
  • 8. BL Lac/Blazars
    • High energy galaxies
    • Its spectrum is void of emission and absorption lines.
    • Only telluric bands are visible.
    • Thought to be looking at galaxies through its jets.
  • 9. Why Use AGN?
    • AGN are typically extremely luminous optically and in radio.
    • Astronomers use AGN to understand galactic evolution.
    • They hope to predict the future of our on galaxy through AGN.
    • Also through study astronomers can hypothesize the creation of the universe.
  • 10. AGN IN SJHSRC
    • In class we look through spectroscopy of AGN
    • We use Graphical Analysis
    • “ In theory” ~Doc.Laug, we can gain insights on how our universe was created and how its evolving.