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Old research pages
I'm keeping these old research pages here for the benefit of anyone
who might arrive here from an external page. They are no longer
updated. Please visit my new web site at
http://sipapu.astro.illinois.edu/~ricker/.
Eventually some content from these pages will migrate to the new site.
Mergers between Clusters of Galaxies
This page organizes access to images and movies from various cluster
merger simulations I have performed. You are welcome to use them in
talks, etc., so long as you credit them properly. See
this page for more information on
clusters.
Movies are in MPEG or
Quicktime format unless otherwise
indicated.
Offset mergers with gas and dark matter
Ricker, P. M. and Sarazin, C. L.
Ap. J. 561 621 (2001)
Ricker, P. M. and Sarazin, C. L.
BAAS 194 (1999)
These calculations
are a parameter study of offset collisions between clusters dominated by
dark matter with an NFW density profile. Mass ratios of 1:1 and 1:3 and
impact parameters of 0, 2, and 5 times the NFW scale radius were studied.
The scale radius was twice the gas core radius.
The simulations were performed using
COSMOS.
Click on the images in the table below to see the images and movies
available for each run.
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Impact parameter |
Mass ratio |
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Offset mergers with gas only
Ricker, P. M.
Ap. J. 496 670 (1998)
These calculations
are a parameter study of clusters containing only a collisional component
(gas) with equal masses and
impact parameters of 0, 5, and 10 times the gas core radius.
They were performed using PPMnD, a parallel self-gravitating
PPM code I wrote for my PhD work. PPMnD later became the
hydro and gravity components of COSMOS.
The movies show gas variables in the collision plane.
Mass ratio |
Impact parameter |
Available images and movies |
1:1 |
zero |
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1:1 |
5rc |
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1:1 |
10rc |
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