Event
Department Colloquium: "The Event Horizon Telescope: Imaging and Time-Resolving a Black Hole"
Shep Doeleman (MIT) Hosted by James Aguirre
A convergence of high bandwidth radio instrumentation and Global mm and
submm wavelength facilities are enabling assembly of the Event Horizon
Telescope (EHT): a short-wavelength Very Long Baseline Interferometry
(VLBI) array, which can observe the nearest supermassive black holes
with Schwarzschild Radius resolution. Initial observations with the EHT
have revealed event horizon scale structure in SgrA*, the 4 million
solar mass black hole at the Galactic Center, and in the much more
luminous and massive black hole at the center of the giant elliptical
galaxy M87. Over the next 2-3 years, this international project will
add new sites and increase observing bandwidth to focus on astrophysics
at the black hole boundary. EHT data products will have an
unprecedented combination of sensitivity and resolution with excellent
prospects for imaging strong GR signatures, detecting magnetic field
structures through full polarization observations, time-resolving black
hole orbits, testing GR, and modeling black hole accretion, outflow and
jet production. This talk will describe the project and the latest EHT
observations.
*Refreshments served @ 3:30pm, DRL 2nd Floor Faculty Lounge*