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[Emeriti-faculty] Department of Physics and Astronomy Seminars and Colloquiums for week of 11-3-08
Good morning:
Events for the week of 11-3-08 are as follows:
Monday, November 3, 2009 at noon
Anderson 212
Pizza in Robinson 251 at noon
Gravitation, Negative Pressure and Negative Energy
Join us for a talk by Professor Larry Ford of the Physics and Cosmology
Department on dark energy, negative pressure and energy and their
implications.
Monday, November 3, 2008
Robinson Hall 250, 5:00 pm
Physics Graduate Students’
JOURNAL CLUB
Eray Sabancilar
“Kaluza-Klein Theory or, second attempt at unification in physics”
(undergraduate students, faculty and anyone interested are also invited:
food served at 4:30 pm in Knipp Library)
Friday, November 7, 2008 at 3:00 PM
Nelson Auditorium, Anderson 112
Tufts University
Physics and Astronomy Colloquium
“A New Spin on AGN Feedback in Clusters and Galaxies”
Brian McNamara
University of Waterloo &
Perimeter Institute for Theoretical Physics
The hot, gaseous atmospheres of galaxies and clusters of galaxies are
repositories for the energy output from active galactic nuclei (AGN)
over cosmic time. X-ray observations are showing that star formation
fueled by gas condensing out of hot atmospheres is strongly suppressed
by AGN feedback. Dubbed "radio mode" feedback, this mechanism may solve
several outstanding problems in astrophysics, including the numbers of
luminous galaxies and their colors, and the excess number of hot baryons
in the Universe. I present new evidence that the most energetic AGN
outbursts may be powered by rapidly-spinning, ultra-massive black holes.
Refreshments at 2:30 PM in Burden Lounge, Anderson 108
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