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Cold filaments in galaxy clusters: effects of heat conduction

Abstract:

We determine the critical size l_crit of a filament of cold (T~10^4 K) gas that is in radiative equilibrium with X-ray emitting gas at temperatures T_out~10^6 - 10^8 K. Filaments smaller than l_crit will be rapidly evaporated, while longer ones will induce the condensation of the ambient medium. At fixed pressure P, l_crit increases as T_out^(11/4), while at fixed T_out it scales as 1/P. It scales as f^(1/2), where f is the factor by which the magnetic field depresses the thermal conductivity...

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Publication status:
Published

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Journal:
Mon.Not.Roy.Astron.Soc.
Volume:
349
Issue:
4
Pages:
1509
Publication date:
2004-01-08
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:bed6dd6b-b321-4697-9ccb-4991d9d658ae
Source identifiers:
167471
Local pid:
pubs:167471
Language:
English
Keywords:

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