Journal article
Dynamical friction in constant density cores: a failure of the Chandrasekhar formula
- Abstract:
-
Using analytic calculations and N-body simulations we show that in constant density (harmonic) cores, sinking satellites undergo an initial phase of very rapid (super-Chandrasekhar) dynamical friction, after which they experience no dynamical friction at all. For density profiles with a central power law profile, ρ ∝ r -α, the infalling satellite heats the background and causes α to decrease. For α < 0.5 initially, the satellite generates a small central constant density core and stalls as...
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- Publication status:
- Published
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- Publisher copy:
- 10.1111/j.1365-2966.2006.11022.x
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Bibliographic Details
- Journal:
- MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
- Volume:
- 373
- Issue:
- 4
- Pages:
- 1451-1460
- Publication date:
- 2006-12-21
- DOI:
- EISSN:
-
1365-2966
- ISSN:
-
0035-8711
- URN:
-
uuid:0fda732d-5643-4ead-925b-532448f7ead5
- Source identifiers:
-
160355
- Local pid:
- pubs:160355
Item Description
- Language:
- English
- Keywords:
Terms of use
- Copyright date:
- 2006
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