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  3. ASTRONOMY COLLOQUIUM<br>Black Hole Masses in Active Galaxies
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ASTRONOMY COLLOQUIUM<br>Black Hole Masses in Active Galaxies

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        3. <b>ASTRONOMY COLLOQUIUM</b><br>Tracing the Cosmic Shutdown of Star Formation in Massive Galaxies
        4. <b>ASTRONOMY COLLOQUIUM</b><br>The Effects of Magnetic Field Morphology on the Determination of Oxygen and Iron Abundances in the Solar Photosphere
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        6. <b>ASTRONOMY COLLOQUIUM</b><br>Lonely Galaxies: The Baryon Content of Isolated Dwarf Galaxies
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        8. <b>ASTRONOMY COLLOQUIUM</b><br>Why the Invisible Reservoir of Gas Around Galaxies Counts in Galaxy Evolution
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        14. ASTRONOMY COLLOQUIUM<br>Supernovae as Drivers of Dust Evolution in Galaxies
        15. ASTRONOMY COLLOQUIUM<br>How to Measure the Composition of Planet-Forming Material
        16. ASTRONOMY COLLOQUIUM<br>Direct Imaging of Extrasolar Planets and the Gemini Planet Imager
        17. ASTRONOMY COLLOQUIUM<br>Blowing in the Quasar Wind: Feedback from Black Hole Outflows in Major Galaxy Mergers
        18. ASTRONOMY COLLOQUIUM<br>Magellan/MDM Colloquium: Department Members Share Their Current Work Using Magellan/MDM Observatories
        19. ASTRONOMY COLLOQUIUM<br>The Fisk-Vanderbilt Masters-to-PhD Bridge Program: A Model for Increasing Diversity at the PhD Level in Physics & Astronomy
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        21. ASTRONOMY COLLOQUIUM<br>Observing the Formation of Planetary Diversity
        22. ASTRONOMY COLLOQUIUM<br>Lies, Damned Lies, and Statistics: Empirical Constraints on Theories of Planet Formation
        23. ASTRONOMY COLLOQUIUM<br>Black People in Astronomy: Why So Few?
        24. ASTRONOMY COLLOQUIUM <br> Hot on the Trail of Warm Planets Orbiting Cool Stars
        25. ASTRONOMY COLLOQUIUM<br>Galaxy Clusters as Cosmological and Astrophysical Probes
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        30. ASTRONOMY COLLOQUIUM <br> The Observability of Recoiling Black Holes as Offset Quasars
        31. ASTRONOMY COLLOQUIUM<br>Black Hole Masses in Active Galaxies
        32. ASTRONOMY COLLOQUIUM<br>Using Multiwavelength Variability Studies to Probe the Disk-Jet Connection of Fermi Blazars
        33. ASTRONOMY COLLOQUIUM<br>X-ray Reverberation Mapping in AGN
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        38. ASTRONOMY COLLOQUIUM<br>Watching a Little Gas Cloud on its Way into the Galactic Supermassive Black Hole
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        44. ASTRONOMY COLLOQUIUM<br>Accretion Disk Outbursts: MHD Simulations (Finally) Confront Reality
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        47. PUBLIC ASTRONOMY DISTINGUISHED ALUMNUS COLLOQUIUM | Cracking the Cosmic Code
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Thursday, October 2, 2014
4:00 AM
411 West Hall

Reverberation mapping, or "echo" mapping, of nearby (z<0.1) active galaxies has provided direct constraints on the mass of the central supermassive black hole in about 50 galaxies.  Furthermore, the size of the region of photoionized gas from which the broad emission lines emanate has been found to scale with the luminosity of the central source.  This radius-luminosity relationship is heavily used to estimate black hole masses in quasars at cosmological distances, and is foundational for our understanding of the interplay between black hole and galaxy growth and evolution.  I will present an overview of the state of the field and discuss current and future work aimed at minimizing the uncertainties in black hole mass determinations in AGNs.

Speaker:
Physics
Randall Lab and Homer A. Neal Lab
450 Church Street
Ann Arbor, MI 48109-1040
734.764.4437
734.763.9694
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