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“Zooming in on star and protoplanetary disk formation “
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Date: |
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Time: |
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Thursday, 12. March 2015 |
Audio-only-Recording as MP3-File (smallest
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- Audio.mp3 (ca.28 Mb) ============================================ Video-Recording for any system with MP4-support:
- Video.mp4 (ca.174 Mb) |
15:15 – 16:15 |
Abstract :
Adaptive
mesh refinement (AMR) simulations with the RAMSES code allow us to zoom in to
sub-AU scales from
Giant Molecular Cloud (GMC) outer scales (~ 40pc). With grid sizes down to ~100 AU (16
levels of factor 2 refinement)
we can
follow supernova driving of star formation over Myr
time scales. With 22 level of refinement we can follow the
accretion
history of individual stars over ~100 kyr with grid
sizes down to ~2 AU, and with 29 levels of refinement
we can
study the dynamics of accretion disks with jets and disk winds over time scales
~100 yr, with grid sizes down to
~0.015 AU. We are currently implementing AMR radiative energy transfer and non-equilibrium chemistry
with dust
in the
RAMSES code, and also developing a new moving-mesh AMR code (DISPATCH),
intended for the near
future
era of exa-scale computing.