Survival Curves, Prevalence Rates, and Dark Matters Therein
نویسندگان
چکیده
منابع مشابه
Dark Matters
If gravitationally bound structures grew from small uctuations in the initial distribution, then the statistics of the initial uctuation eld may be used to estimate many properties of the evolved dark halo distribution. I only consider hierarchical clustering. That is, I assume that mergers are common and fragmentation is not; objects present at any given time were made by mergers of smaller ob...
متن کاملDark Baryons and Rotation Curves
The best measured rotation curve for any galaxy is that of the dwarf spiral DDO 154, which extends out to about 20 disk scale lengths. It provides an ideal laboratory for testing the universal density profile prediction from high resolution numerical simulations of hierarchical clustering in cold dark matter-dominated cosmological models. We find that the observed rotation curve cannot be fit e...
متن کاملMarriage between the baryonic and dark matters
The baryonic and dark matter fractions can be both generated simultaneously and with comparable amounts, if dark matter is constituted by the baryons of the mirror world, a parallel hidden sector with the same (or similar) microphysics as that of the observable world.
متن کاملDark Matter Halos and Disk Rotation Curves
Cosmological N–body simulations have revealed a remarkable similarity in the structure of dark matter halos formed in hierarchically clustering universes. Regardless of halo mass, cosmological parameters, and power spectrum of initial density fluctuations, the spherically averaged density profiles of dark matter halos have a universal shape. The logarithmic slope of this profile is shallower th...
متن کاملSurvival Rates and Consequences
To first order, the initial cluster luminosity function appears to be universal. This means that the brightest young cluster in a galaxy can be predicted from the total number of young clusters based purely on statistics. This suggests that the physical processes responsible for the formation of clusters are similar in a wide variety of galaxies, from mergers to quiescent spirals. One possibili...
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ژورنال
عنوان ژورنال: Journal of Aging and Health
سال: 1991
ISSN: 0898-2643,1552-6887
DOI: 10.1177/089826439100300206