搜索结果: 1-8 共查到“天体物理学 Intergalactic”相关记录8条 . 查询时间(0.015 秒)
Faraday Rotation Measure due to the Intergalactic Magnetic Field II: the Cosmological Contribution
intergalactic medium — large-scale structure of universe —magnetic fields — polarization
2011/8/24
We investigate the Faraday rotation measure (RM) due to the intergalactic magnetic field (IGMF) through the cosmic web up to cosmological distances, using a model IGMF based on turbulence dynamo in th...
Anisotropic AGN Outflows and Enrichment of the Intergalactic Medium. II. Metallicity
cosmology — galaxies active — galaxies jets — intergalactic medium — methods
2010/11/15
We investigate the large-scale influence of outflows from AGNs in enriching the IGM with metals in a cosmological context. We combine cosmological simulations of large-scale structure formation with a...
Impact of Primordial Ultracompact Minihaloes on the Intergalactic Medium and First Structure Formation
intergalactic medium dark matter cosmology theory early Universe galaxies structure
2010/11/12
The effects of dark matter annihilation on the evolution of intergalactic medium(IGM) in the early Universe can be more important if dark matter structure is more concentrated. Ultracompact Minihaloes...
Studying the Warm-Hot Intergalactic Medium in Emission
cosmology observations intergalacticmedium large-scale structure of Universe X-rays
2010/11/12
We assess the possibility to detect the warm-hot intergalactic medium (WHIM) in emission and
to characterize its physical conditions and spatial distribution through spatially resolved X-ray spec-tro...
The Last Eight-Billion Years of Intergalactic SiIV Evolution
intergalactic medium – quasars absorption lines techniques spectroscopic intergalactic medium quasars absorption lines techniques spectroscopic
2010/11/10
We identified 24 Si IV absorption systems with z . 1 from a blind survey of 49 low-redshift
quasars with archival Hubble Space Telescope ultraviolet spectra. We relied solely on the char-
acteristic...
Calibrating Galaxy Redshifts Using Absorption by the Surrounding Intergalactic Medium
galaxies high-redshift intergalactic medium quasars absorption lines
2010/11/11
Rest-frame UV spectral lines of star-forming galaxies are systematically offset fromthe galaxies’systemic redshifts, probably because of large-scale outflows.We calibrate galaxy redshifts measured fro...
The impact of spatial fluctuations in the ultra-violet background on intergalactic carbon and silicon
methods: numerical intergalactic medium quasars absorption lines
2010/11/12
Spatial inhomogeneities in the spectral shape of the ultra-violet background (UVB) at the tail-end of He II reionisation are thought to be the primary cause of the large fluctuations observed in the H...
When galaxy clusters collide, they generate shock fronts in the hot intracluster medium. Observations of these shocks can provide valuable information on the merger dynamics and physical conditions in...