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Galactic winds in the intergalactic medium

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arxiv astro-ph/0208418 v2 pith:JBJURBRL submitted 2002-08-23 astro-ph

Galactic winds in the intergalactic medium

classification astro-ph
keywords windslinesabsorptionbecausegalacticproduceagreementblown
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We have performed hydrodynamical simulations to investigate the effects of galactic winds on the high-redshift (z=3) universe. Strong winds suppress the formation of low-mass galaxies significantly, and the metals carried by them produce C IV absorption lines with properties in reasonable agreement with observations. The winds have little effect on the statistics of the H I absorption lines, because the hot gas bubbles blown by the winds fill only a small fraction of the volume and because they tend to escape into the voids, thereby leaving the filaments that produce these lines intact.

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