期刊
ASTROPHYSICAL JOURNAL
卷 560, 期 2, 页码 L115-L118出版社
IOP PUBLISHING LTD
DOI: 10.1086/324310
关键词
galaxies : active; galaxies : formation; galaxies : jets; galaxies : starburst; large scale structure of universe; radio continuum : galaxies
Evidence for extended active lifetimes (>10(8) yr) for radio galaxies implies that many large radio lobes were produced during the quasar era,, 1.5 < z < 3, when the comoving density of radio sources was 2-3 dex higher than the present level. However, both adiabatic and inverse Compton losses against the intense microwave background substantially reduce the ages and numbers of sources that are detected in flux-limited surveys. The realization that the galaxy-forming material in those epochs was concentrated in filaments occupying a small fraction of the total volume then leads to the conclusion that radio lobes permeated much of the volume occupied by the protogalactic material during that era. The sustained overpressure in these extended lobes may have played an important role in triggering the high inferred rate of star formation at z > 1.5 and in the magnetization of the cosmic network of filaments.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据