The Probability Distribution Function of Light in the Universe: Results from Hydrodynamic Simulations

نویسندگان

  • Jeremiah P. Ostriker
  • Kentaro Nagamine
چکیده

While second and higher order correlations of the light distribution have received extensive study, the lowest order probability distribution function (PDF) — the probability that a unit volume of space will emit a given amount of light — has received very little attention. We estimate this function with the aid of hydrodynamic simulations of the ΛCDM model, finding it significantly different from the mass density PDF, and not simply related to it by linear bias or any

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Application of tests of goodness of fit in determining the probability density function for spacing of steel sets in tunnel support system

One of the conventional methods for temporary support of tunnels is to use steel sets with shotcrete. The nature of a temporary support system demands a quick installation of its structures. As a result, the spacing between steel sets is not a fixed amount and it can be considered as a random variable. Hence, in the reliability analysis of these types of structures, the selection of an appropri...

متن کامل

Using Weibull probability distribution to calibrate prevailing wind applying in oil spill simulation

In the Persian Gulf, the major source of oil pollution is related to the transportation of tankers, offshore production and discharges by coastal refineries. The water dynamical field has been obtained using a new hydrodynamic model. Local wind is recognized as the principal driving force combining to the water dynamic field to determine oil drift on the sea surface. The Weibull probability dis...

متن کامل

Determine the probability distribution function of frosts in Iran during the period (1981-2010)

Agricultural sector is most dependent on climate, and climate is the main determinant of time, location, production resources, and productivity of agricultural activities. The first event of zero-degree temperature in fall and its last event in spring is important for agriculture. This information is used to determine the species suitable for planting in each area. The present study seeks to id...

متن کامل

Fitting Tree Height Distributions in Natural Beech Forest Stands of Guilan (Case Study: Masal)

        In this research, modeling tree height distributions of beech in natural forests of Masal that is located in Guilan province; was investigated. Inventory was carried out using systematic random sampling with network dimensions of 150×200 m and area sample plot of 0.1 ha. DBH and heights of 630 beech trees in 30 sample plots were measured. Beta, Gamma, Normal, Log-normal and Weibull prob...

متن کامل

Modeling the distribution of deposited energy by alpha particles from Radon 223 decay and its effect on DNA

 The ionizing radiations, through physical and chemical processes, lead to simple and complex single- and double- strand breaks, as well as base lesions to the DNA. In this study, taking into account all the physical and chemical processes involved in the interaction of ionizing radiation with matter, the initial damage induced to DNA was evaluated for 5.7 MeV alpha-rays from Radon 223 isotope....

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003