PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE
Subscribe to podcastEHT 2014
Organizer(s): Avery Broderick Shep Doeleman
Collection URL: http://pirsa.org/C14041
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 | Welcome to Perimeter Institute and the EHT 2014 Conference Speaker(s): Neil Turok
Abstract:
Date: 10/11/2014 - 9:00 am
Collection: EHT 2014
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 | Introduction to EHT Speaker(s): Shep Doeleman
Abstract:
Date: 10/11/2014 - 9:05 am
Collection: EHT 2014
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 | Growth of supermassive black holes and their relationships to their host galaxies Speaker(s): Marta Volonteri
Abstract: Black holes are the engines that power quasars and active galactic nuclei throughout cosmic time. The masses of black holes in nearby galaxies define clear correlations with the properties of their host galaxies. These results suggest that black holes, while a thousand times lighter than the galaxy,... read more
Date: 10/11/2014 - 9:30 am
Collection: EHT 2014
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 | Polarized emission from Black Hole Accretion Disks and Jets Speaker(s): Jonathan McKinney
Abstract: We discuss how polarized emission can place constraints on the properties of accretion flows and jets in the strong gravity regime for systems like SgrA* and M87 being observed by the Event Horizon Telescope.
Date: 10/11/2014 - 9:55 am
Collection: EHT 2014
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 | Stellar Orbits at the Galactic Center Speaker(s): Andrea Ghez
Abstract: Over the last 20 years, advances in high angular resolution imaging technology has enabled the motions of individual stars to be tracked at the Galactic Center.
This has provided the best evidence to date not only for the presence of a supermassive black hole at the center of our Galaxy, but ... read more
Date: 10/11/2014 - 10:45 am
Collection: EHT 2014
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 | Constraints on Sgr A*s accretion geometry and plasma characteristics from the 3Msec Chandra (+ multiwavelength) campaign Speaker(s): Sera Markoff
Abstract: Sgr A* is one of the few black holes whose capture radius is just resolvable with the <0.5” spatial resolution of the Chandra X-ray Observatory. Motivated by this potential we proposed for the deepest ever view of our Galactic center in 2012, via a Chandra-HETGS “X-ray Visionary Project”. Involving over 60 members of the Galactic center community, we obtained ~35 days of observations within a single year, for the first time also using the spectral gratings. This campaign doubled the photon count compared to the 12 years of observations before, and involved simultaneous observations from radio through gamma-ray frequencies. We are still analyzing these data sets, in combination with ongoing monitoring campaigns since, which together provide key constraints for the modeling of Sgr A* and environs necessary for the Event Horizon Telescope. I will present the highlights of this campaign so far, with a focus on results that can alter/define our ideas about the accretion geometry and plasma conditions near the black hole.
Date: 10/11/2014 - 11:10 am
Collection: EHT 2014
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 | The Size and Morphology of Sgr A* at 7mm Speaker(s): Geoff Bower
Abstract: Long wavelength measurements provide sensitive probes of the intrinsic structure of Sgr A* and of the scattering properties of the line-of-sight interstellar medium. At this wavelength, scattering dominates the apparent size of the source but careful closure amplitude techniques can provide highly ... read more
Date: 10/11/2014 - 11:35 am
Collection: EHT 2014
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 | Particle Acceleration and Non-thermal Emission in Radiatively Inefficient Accretion Flows Speaker(s): Eliot Quataert
Abstract: I summarize several physical processes that can produce efficient particle acceleration in radiatively inefficient accretion flows. I then describe the implications for non-thermal emission and EHT observations of Sgr A*.
Date: 10/11/2014 - 12:00 pm
Collection: EHT 2014
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 | Detection and Variability of Closure Phases in Sgr A* Speaker(s): Vincent Fish
Abstract:
Date: 10/11/2014 - 2:30 pm
Collection: EHT 2014
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