Tuesdays at 1:00pm in the Dept. Conference Room (217)
| Date |
Speaker |
Journal/Talk
Title |
01/17
|
Weihua Lei
|
Bardeen-Petterson
Effect in Sw J1644+57
|
| 01/24 |
Wei Deng
|
On the low energy
photon spectral index of photosphere model of GRBs
|
| 01/31 |
Amanda Maxham |
Recent Exoplanet
Discoveries
(The exoplanet catalog with free iphone/ipad app: http://exoplanet.hanno-rein.de/
Extrasolar Visions: http://www.extrasolar.net
Kepler announcement page with animations: http://www.nasa.gov/mission_pages/kepler/news/new-multi-systems.html)
|
02/07
(1pm in Room 249) |
Ryuichi Kurosawa
|
Modeling Line
Variability from Accreting Magnetosphere and Wind Signatures of
Classical T Tauri Stars |
| 02/14 |
Massimilano
De Pasquale |
Dark Gamma-Ray Bursts:
on the bright scene for 10 years
Abstract:
"I'll review our past and present understanding of GRBs with dim or
absent
optical transients, including the recent developments made possible by
deep IR observations." |
02/21
|
Bo Zhang
|
Dark matter searches with astroparticle data
(Porter,T. A., Johnson, R. P. and Graham, P. W. 2011, ARA&A,49:155–94)
|
| 02/28 |
Houjun Lu
|
Physical Properties of Galaxies from z = 2–4
(Shapley, A. E. 2011, ARA&A,49:525–580)
|
| 03/06 |
Gabriel Gobeli
|
Laboratory Astrochemistry: Gas-Phase Processes
(Smith, I.W.M. 2011, ARA&A,49: 29-66)
|
03/13
Special Forum |
Ben Shappee
(Ohio State University)
|
The Mass-Loss Induced Eccentric Kozai Mechanism
Abstract: Over
10% of stellar systems contain 3 or more stars; this large fraction
naturally leads to the question of what happens to these systems as
they evolve. I'll review the well-known Kozai-Lidov mechanism and
the recently discovered eccentric Kozai mechanism. I will discuss
their implication for planetary systems and close binary stellar
systems. Finally, I will present our novel mechanism which may
affect a broad range of hierarchical triple star systems. These systems
are essentially unaffected by the Kozai-Lidov mechanism until the
primary in the central binary evolves off the main sequence and begins
mass-loss. Subsequently, the primary becomes a white dwarf and
may then be much less massive than the other components in the ternary,
enabling the eccentric Kozai mechanism.'. In this near-test-particle
limit, the mutual inclination between the inner and outer binary can
flip signs, driving the inner binary to very high eccentricity and
tidal contact. Even distant binaries, with initial semi-major
axes larger then tens of AU, can be strongly affected. I will present
an example of this ``Mass-loss Induced Eccentric Kozai'' (MIEK)
mechanism and a first attempt to explore the MIEK mechanism's
dependence on the initial eccentricities and inclination of the triple
system.
|
| 03/20 |
Robert
Thompson |
Molecular Clouds in Nearby Galaxies
(Fukui, Y., Kawamura, A. 2010, ARA&A,48: 547-580)
|
| 03/27 |
He Gao
|
The Astrophysics of
Ultrahigh-Energy Cosmic Rays
(Kotera, K. & Olinto, A.V. 2011, ARA&A, 49: 119–153)
|
04/03
|
|
Spring
Break week |
04/10
|
John
Boisvert |
Galaxy Disks
(van der Kruit, P.C. & Freeman, K.C. 2011, ARA&A, 49: 301-371)
|
| 04/17 |
Keita Todoroki |
Stellar Feedback in Galaxies and the Origin of Galaxy-scale Winds
(Hopkins, P.F., Quataert, E. & Murray, N. 2011, arXiv:1110.4638)
|
| 04/24 |
|
|
| 05/01 |
Amit
Kashi |
A Cold Channel for Black Hole Accretion and Feedback in Cosmological Simulations
|
| 05/08 |
|
|
| 05/15 |
|
Semester Ends
|
|