N-body simulations using customized potential-density pair basis sets

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

N - body simulations using customised potential - density pair basis sets

Potential-density pair basis sets can be used for highly efficient N-body simulation codes, but they suffer from a lack of versatility, i.e. a basis set has to be constructed for each different class of stellar system. We present numerical techniques for generating a biorthonormal potential-density pair basis set which has a general specified pair as its lowest order member. We go on to demonst...

متن کامل

Potential-Density Basis Sets for Galactic Disks

A class of complete potential-density basis sets in cylindrical (R,φ, z) coordinates is presented. This class is suitable for stability studies of galactic disks in three dimensions and includes basis sets tailored for disks with vertical density profiles that are exponential (e−|z|/z0), Gaussian (e−(z/z0) 2 ) or locally isothermal ( sech(z/z0) ). The basis sets are non-discrete and non-biortho...

متن کامل

Smooth Potential Chaos and N-body Simulations

Integrations in fixed N-body realisations of smooth density distributions corresponding to a chaotic galactic potential can be used to derive reliable estimates of the largest (finite time) Lyapunov exponent χS associated with an orbit in the smooth potential generated from the same initial condition, even though the N -body orbit is typically characterised by an N -body exponent χN χS. This ca...

متن کامل

Algorithms for Dynamic Closest Pair and n-Body Potential Fields

We present a general technique for dynamizing certain problems posed on point sets in Euclidean space for any xed dimension d. This technique applies to a large class of structurally similar algorithms, presented previously by the authors , that make use of the well-separated pair decomposition. We prove eecient worst-case complexity for maintaining such computations under point insertions and ...

متن کامل

Gravitational N -Body Simulations

This book discusses in detail all the relevant numerical methods for the classical N body problem. It demonstrates how to develop clear and elegant algorithms for models of gravitational systems and explains the fundamental methematical tools needed to describe the dynamics of a large number of mutually attractive particles. Particular attention is given to the techniques needed to model astrop...

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: Monthly Notices of the Royal Astronomical Society

سال: 1998

ISSN: 0035-8711,1365-2966

DOI: 10.1046/j.1365-8711.1998.01861.x