neurologist
发表于 2025-3-25 06:39:40
Physiology Question-Based Learning galaxy formation. I review recent progress in simulating their formation out of primordial, pure hydrogen-helium gas at redshifts ~ 10. The predicted host systems are early dwarf galaxies with total masses ~ 10. .. To be able to form seed black holes, with typical mass ~ 10., the dwarf galaxy must
projectile
发表于 2025-3-25 10:04:06
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NICE
发表于 2025-3-25 12:32:30
https://doi.org/10.1007/978-94-017-2660-3asars. The slow evolution of the clustering length with redshift inferred in the 2dF quasar redshift survey strongly favors a scenario where the central black-holes comprise a larger fraction of the host galaxy mass at higher redshifts. In a scenario where quasars are triggered by halo mergers, this
大约冬季
发表于 2025-3-25 19:11:43
The cell wall and reproduction,ffective in slowing down the star formation and in driving gas outflows in smaller and smaller dark matter halos. Thus the more massive protogalaxies virializing at early times are the sites of faster star formation. The correspondingly higher radiation drag causes a faster angular momentum loss by
SMART
发表于 2025-3-25 20:47:35
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边缘带来墨水
发表于 2025-3-26 02:24:15
https://doi.org/10.1007/978-3-642-68643-6st probes of the early growth of supermassive black holes in the universe, the relation between the formation of early galaxies and black holes, and put constraints on the role of quasars and AGNs to the cosmic reionization. About 1000 quasars have been discovered at .>4, including 50 at .>5 and eig
stroke
发表于 2025-3-26 08:08:40
Physiology and Genetics of Reproductionradio-quiet quasars, radio-loud quasars, moderate-luminosity AGNs in . surveys, and future prospects. No significant changes in AGN . emission properties have yet been found at high redshift, indicating that the small-scale . emission regions of AGNs are insensitive to the dramatic changes on larger
OPINE
发表于 2025-3-26 12:19:00
ATTIPALLI R. REDDY,AGEPATI S. RAGHAVENDRAicts that the supermassive black holes present in these quasars were formed at a very early epoch. If a correlation between black hole mass and dark matter halo mass is present at these early times, then these rare supermassive black holes will be located inside the most massive dark matter halos. T
tattle
发表于 2025-3-26 15:43:37
Intrauterine Pressure and the Human Foetus,andra Deep Field South (CDFS). The AGN clustering amplitude, measured for sources with median luminosity .~ 10. erg s. and at a median redshift of ~ 0.9, is found to be a factor of ~ 2 higher in the CDFS than in the CDFN, revealing large cosmic variance in these 0.1 deg. fields. The extra correlatio
不能妥协
发表于 2025-3-26 17:39:30
Evolutionary Aspects of Membrane Digestion,e 2 Ms . Deep Field-North) and deep optical spectroscopic data. Even though a large fraction of high-redshift SCUBA galaxies host AGN activity (upward of 38%), we argue that in almost all cases the AGNs are not bolometrically important (i.e., contribute <20% of the energetics). Thus, most high-redsh