ASCL.net

Astrophysics Source Code Library

Making codes discoverable since 1999

ASCL Code Record

[ascl:1403.012] YNOGKM: Time-like geodesics in the Kerr-Newmann Spacetime calculations

YNOGKM (Yun-Nan observatories geodesic in a Kerr-Newman spacetime for massive particles) performs fast calculation of time-like geodesics in the Kerr-Newman (K-N) spacetime; it is a direct extension of YNOGK (Yun-Nan observatories geodesic Kerr) calculating null geodesics in a Kerr spacetime. The four Boyer-Lindquis coordinates and proper time are expressed as functions of a parameter p semi-analytically by using the Weierstrass' and Jacobi's elliptic functions and integrals. The elliptic integrals are computed by Carlson's elliptic integral method, which guarantees the fast speed of the code. The source Fortran file ynogkm.f90 contains three modules: constants, rootfind, ellfunction, and blcoordinates.

Code site:
http://www1.ynao.ac.cn/~yangxl/yxl.html
Described in:
http://adsabs.harvard.edu/abs/2014A%26A...561A.127Y
Bibcode:
2014ascl.soft03012Y

Views: 1657

ascl:1403.012
Add this shield to your page
Copy the above HTML to add this shield to your code's website.