BHI Events for the Coming Week

Monday, March 27

1:30 pm: Ramesh Narayan’s Group Meeting (BHI Conference Room, 20 Garden, 2nd floor)

Tuesday, March 28

11:15-11:45 am: Department of Astronomy Visiting Committee Meeting (BHI Conference Room, 20 Garden, 2nd floor)

1:00 pm: BHI Lunch and Colloquium (BHI Conference Room, 20 Garden, 2nd floor)

Gaston Giribet (University of Buenos Aires): "Stringy Horizons and Duality"
Carina Prunkl (University of Oxford): "Black Hole Entropy – How Much Information Do We Need?"
Maciek Wielgus (Black Hole Initiative (Incoming BHI Fellow))

4:30 pm: Pizza with BHI Colloquium Speakers (BHI Conference Room, 20 Garden, 2nd floor)

Friday, March 31

3:00 pm: Shing-Tung Yau Study Group (BHI Conference Room, 20 Garden, 2nd floor)

 

OUTSIDE EVENTS:

Wednesday, March 29

11:00 am: ITC Pizza Lunch (Phillips Auditorium)
Edo Berger (Harvard): "The Electromagnetic Counterparts of Gravitational Wave Sources"

12:30 pm: High Energy Phenomena Seminar (Phillips Auditorium) Pizza will be served at 12:20
Hector Martinez Rodriguez (University of Pittsburgh): "Observational evidence for high neutronization in SNRs"
Bozena Czerny (Copernicus Astronomical Center): "Spectropolarimetry of Seyfert 1 galaxies in the optical band as a tool for determination of the viewing angle and verification of the black hole mass determination"

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Monday, March 20

1:30 pm : Narayan Group Meeting (BHI Conference Room, 20 Garden, 2nd floor)
 

Tuesday, March 21

1:00 pm : BHI Lunch and Colloquium (BHI Conference Room, 20 Garden, 2nd floor)
Robert Wald (University of Chicago): "You Can't Overcharge/Overspin a Black Hole”
Tsevi Mazeh (Tel Aviv University): "A photometric search for dormant Black Holes"

4:30 pm : Pizza with BHI Colloquium Speakers (BHI Conference Room, 20 Garden, 2nd floor)


Friday, March 24

3:00 pm : Shing-Tung Yau Study Group (BHI Conference Room, 20 Garden, 2nd floor)

 

OUTSIDE EVENTS:

Wednesday, March 22

11:00 am : ITC Pizza Lunch (Phillips Auditorium)
Scott Hughes (MIT): "Gravitational waves from binary systems"

12:30 pm : High Energy Phenomena Seminar (Phillips Auditorium) Pizza will be served at 12:20
Dimitrios Psaltis (University of Arizona): "Exploiting the strong gravitational fields of neutron stars to measure their properties"

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Monday, March 13

1:30 pm : Ramesh Narayan’s Study Group (BHI Conference Room, 20 Garden, 2nd floor)
"How does an asymmetric magnetic field change the vertical structure of a hot accretion flow?"
Dr Shahram Abbassi
Department of Physics, School of Sciences, Ferdowsi University of Mashhad, Iran
Abstract:
In this talk I will discuss on the effects of large-scale magnetic fields in hot accretion flows for an asymmetric/symmetric configurations with respect to the equatorial plane. The solutions that we have found show that the large-scale asymmetric magnetic field can significantly affect the dynamics of the flow and also cause notable outflows in the outer parts. Previously, we treated a viscous resistive accreting disc in the presence of an odd symmetric B-fi eld about the equatorial plane. Now we extend our earlier work by taking into account another configuration of large-scale magnetic field which is no longer symmetric. We provide asymmetric fi eld structures with small deviations from even and odd symmetric B- eld. Our results show that the disc's dynamics and appearance become different above and below the equatorial plane. The set of solutions also predicts that even a small deviation in a symmetric field makes the disc to compress on one side and expand on the other. In some cases, our solution represents a very strong outflow from just one side of the disc. Therefore, the solution may potentially explain the origin of one-sided jets in radio galaxies.

3:30 pm : BHI Philosophy Reading Group (BHI Conference Room, 20 Garden, 2nd floor)

Tuesday, March 14

*Cancelled due to inclement weather*
1:00 pm : BHI Lunch and Colloquium (BHI Conference Room, 20 Garden, 2nd floor)
BHI Colloquium: Informal lunchtime discussion on black holes. Moderated by BHI Director, Avi Loeb.
Lunch will be included.

Friday, March 17

3:00 pm : Shing-Tung Yau Study Group (BHI Conference Room, 20 Garden, 2nd floor)

 

OUTSIDE EVENTS:

Thursday, March 16

3:00 pm : CfA Colloquium (Phillips Auditorium) Tea and cookies will be served at 3:30 
Brian Metzger (Columbia University): "Neutron Star Binary Mergers in the Era of Gravitational Wave Astronomy" 

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Monday
, March 06

1:30 pm : Ramesh Narayan’s Study Group (BHI Conference Room, 20 Garden, 2nd floor)

3:30 pm : BHI Philosophy Reading Group (BHI Conference Room, 20 Garden, 2nd floor)

Tuesday, March 7

1:00 pm : BHI Lunch and Colloquium (BHI Conference Room, 20 Garden, 2nd floor)
Burkhard Schwab (Harvard): "Conservation Laws and Black Hole Absorption Rates"Jeff Oishi (Bates College) "The Magnetorotational Instability as a Pattern Forming System and implications for the physics of accretion"


4:30 pm : Pizza with BHI Colloquium Speakers (BHI Conference Room, 20 Garden St., 2nd floor)

Wednesday, March 08

11:00 am : ITC Pizza Lunch (Phillips Auditorium)
Adam Burrows (Princeton): "The Multi-Dimensional Core-Collapse Supernova Mechanism"

Friday, March 10

3:00 pm : Shing-Tung Yau Study Group (BHI Conference Room, 20 Garden, 2nd floor)