Characteristic Scales of Initial Density and Velocity Fields

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Characteristic scales of initial density and velocity fields

For the initial fields of the density contrast and peculiar velocity, we theoretically calculate the ‘differential’ and ‘integral’ length scales, i.e., statistical measures that respectively characterize the small-scale zero crossings and large-scale correlation of a random field. The length scales and associated mass scales are related to the length and mass scales observed for (1) halos of yo...

متن کامل

HYPERTRANSCENDENTAL FORMAL POWER SERIES OVER FIELDS OF POSITIVE CHARACTERISTIC

Let $K$ be a field of characteristic$p>0$, $K[[x]]$, the ring of formal power series over $ K$,$K((x))$, the quotient field of $ K[[x]]$, and $ K(x)$ the fieldof rational functions over $K$. We shall give somecharacterizations of an algebraic function $fin K((x))$ over $K$.Let $L$ be a field of characteristic zero. The power series $finL[[x]]$ is called differentially algebraic, if it satisfies...

متن کامل

Characteristic Scales in Galaxy Formation

Recent data, e.g. from SDSS and 2dF, reveal a robust bi-modality in the distribution of galaxy properties, with a characteristic transition scale at stellar mass M∗ ∼ 3× 10 10 M⊙ (near L∗), corresponding to virial velocity V ∼ 100 kms . Smaller galaxies tend to be blue disks of young populations. They define a “fundamental line” of decreasing surface brightness, metallicity and velocity with de...

متن کامل

Assessing Characteristic Scales Using Wavelets

Characteristic scale is a notion that pervades the geophysical sciences, but it has no widely accepted precise definition. The wavelet transform decomposes a time series into coefficients that are associated with different scales. The variance of these coefficients can be used to decompose the variance of the time series across different scales. A practical definition for characteristic scale c...

متن کامل

Reionization: Characteristic Scales, Topology and Observability

Recently the numerical simulations of the process of reionization of the universe at z > 6 have made a qualitative leap forward, reaching sufficient sizes and dynamic range to determine the characteristic scales of this process. This allowed making the first realistic predictions for a variety of observational signatures. We discuss recent results from large-scale radiative transfer and structu...

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

ژورنال

عنوان ژورنال: Progress of Theoretical Physics

سال: 2010

ISSN: 0033-068X,1347-4081

DOI: 10.1143/ptp.123.187