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Rigging dark halos: why is hierarchical galaxy formation consistent with the inside-out build-up of thin discs?

Abstract:

State-of-the-art hydrodynamical simulations show that gas inflow through the virial sphere of dark matter halos is focused (i.e. has a preferred inflow direction), consistent (i.e. its orientation is steady in time) and amplified (i.e. the amplitude of its advected specific angular momentum increases with time). We explain this to be a consequence of the dynamics of the cosmic web within the neighbourhood of the halo, which produces steady, angular momentum rich, filamentary inflow of cold ga...

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Journal:
Monthly Notices of the Royal Astronomical Society
Publication date:
2011-05-01
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:2e3269b2-4bcf-49ad-a3f6-8d8e451c8de6
Source identifiers:
205756
Local pid:
pubs:205756

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