Asymmetric instabilities
in stellar core collapse
June 30 – July 11, 2008
Institut Henri Poincaré, Paris
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Organizing committee:
(CEA-Saclay, organizer)
H.Th. Janka (MPA Garching, co-organizer)
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Scientific overview:
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The physical mechanisms responsible for the explosion of massive stars are still not well understood. The discovery of new hydrodynamic instabilities, like the SASI and large amplitude neutron star g-modes in the context of stellar core collapse, has enabled a significant progress of our theoretical understanding of the processes that play a role in the cores of collapsing massive stars, and the conditions for the birth of neutron stars.
Over the past years, numerical simulations have revealed that these instabilities can be a key ingredient for successful supernova explosions: either in the classical scenario driven by neutrino energy deposition, or through a new acoustic mechanism involving the acoustic energy flux produced by g-mode oscillations of the nascent neutron star.
These asymmetrical instabilities are also capable of providing neutron star kicks, may influence their spin, and can lead to gravitational wave emission and special features of the neutrino emission.
While the complexity of the numerical models increases towards a 3D dynamical description of the rotating, magnetized collapsing core, the fundamental properties of these instabilities are still being debated and deserve clarification.
This workshop aims at discussing these recent advances by allowing productive interactions between experts using different numerical techniques and analytical methods.
In particular the following topics will be discussed during the meeting:
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the kick and spin of the pulsar | |
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nucleosynthesis | |
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neutrino emission | |
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gravitational waves |
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List of invited participants
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E. Audit (CEA Saclay) | B. Müller (MPA Garching) |
C. Cardall (Oak Ridge Nat. Lab. & UT Knoxville) | H. Mikami (Chiba Univ.) |
L. Dessart (Steward Obs. & Princeton Univ.) | J. Murphy (Univ. Washington, Seattle) |
T. Foglizzo (CEA Saclay) | M. Obergaulinger (MPA Garching) |
J. Guilet (CEA Saclay) | N. Ohnishi (Tohoku Univ.) |
T. Hanawa (Chiba Univ.) | C. Ott (Univ. Arizona, Tucson) |
W. Iwakami (Tohoku Univ.) | J. Sato (CEA Saclay) |
H.Th. Janka (MPA Garching) | S. Scheidegger (Univ. Basel) |
R. Käppeli (Univ. Basel) | Y. Suwa (Tokyo Univ.) |
K. Kotake (NAOJ, Tokyo) | T. Takiwaki (Tokyo Univ.) |
J.M. Laming (NRL, Washington) | J.C. Wheeler (Univ. Texas, Austin) |
M. Liebendörfer (Univ. Basel) | S. Whitehouse (Univ. Basel) |
E. Livne (Univ. Jerusalem) | S. Yamada (Waseda Univ.) |
A. Marek (MPA Garching) | T. Yamasaki (CEA Saclay) |
J. Margueron (IPN Orsay) |
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Programme, slides and video download
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The talks can be downloaded by clicking on the corresponding icons:
for pdf slides, and for mp4 video
Monday, June 30
9:30 | LOC | Welcome at IHP & Registration | ||||||
10:30 | coffee | |||||||
14:30 | J. Murphy | Criteria for core-collapse supernova explosions by the neutrino mechanism | ||||||
15:30 | tea |
Tuesday, July 1
Wednesday, July 2
Thursday, July 3
Friday, July 4
Monday, July 7
10:30 | coffee | |||||||
14:30 | M. Liebendörfer | Investigating supernova dynamics and magnetic fields in 3D | ||||||
15:30 | tea | |||||||
16:00 | H. Mikami | The 3D MHD effects for a core collapse supernova explosion |
Tuesday, July 8
9:30 | Y. Suwa | Gravitational collapse of very massive stars | ||||||
10:30 | coffee | |||||||
11:00 | T. Takiwaki | Magnetorotational collapse and jet formation | ||||||
15:30 | tea |
Wednesday, July 9
9:30 | L. Dessart | Core-collapse supernovae explosions. Magneto-rotational mechanism | ||||||
10:30 | coffee | |||||||
11:00 | E. Audit | Radiation hydrodynamics using moment method | ||||||
15:30 | tea |
Thursday, July 10
Friday, July 11
10:30 | coffee | |||||||
11:00 | T. Foglizzo | Concluding discussion | ||||||
15:30 | tea |
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Venue of the meeting
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The address of IHP is 11, rue Pierre et Marie Curie, Paris 75005 (map of the area). More information about IHP can be found in English on their web page.
Desks and office space will be available at IHP for the invited participants, including iMac computers, printers, wireless and ethernet connection to the internet for personal laptops.
The first week (June 30 - July 4) will be organized with 4-6 talks per day, coffee breaks and time for discussions.
The second week (July 7-11) will offer more time for scientific interactions, with only 2 talks per day.
There will be no publication of conference proceedings, but the talks will be recorded and posted on the web server of CEA, together with their slides. This web page has been built with the kind help of C. Gouiffes.
Local Organizing Committee: T. Foglizzo, J. Guilet, J. Sato, T. Yamasaki.
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Accommodation issues and financial support
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Financial support will be granted to the invited participants who plan to also stay for the second week of the workshop. This support aims at covering the full cost of accommodation, either in apartments associated to IHP or in nearby hotels.
Partial support for the first week will also be available upon application.
Student housing will also be available upon request, at the University Campus of the “Cité Internationale”.
A list of nearby hotels recommended by IHP is available here for those who can only stay for the first week. Early reservation is recommended, preferably before April 15.
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Registration procedure for other participants
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Researchers and students interested in attending this workshop are welcome.
Due to space limitations, registration by
is recommended.
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Sponsors
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CEA/IRFU/SAp, UMR AIM, IHP, CNRS (GdR PCHE), INSU, CNES