YNOGKM: Time-like geodesics in the Kerr-Newmann Spacetime

Discussion topics for individual codes
Post Reply
User avatar
owlice
Guardian of the Codes
Posts: 1135
Joined: Wed Aug 04, 2004 4:18 pm
Location: Washington, DC

YNOGKM: Time-like geodesics in the Kerr-Newmann Spacetime calculations

Post by owlice » Sun Mar 16, 2014 11:34 pm

YNOGKM: Time-like geodesics in the Kerr-Newmann Spacetime calculations

Abstract: 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.

Credit: Yang, Xiao-lin; Wang, Jian-cheng

Site: http://www1.ynao.ac.cn/~yangxl/yxl.html
http://adsabs.harvard.edu/abs/2014A%26A...561A.127Y

Bibcode: 2014ascl.soft03012Y

ID: ascl:1403.012
Last edited by Ada Coda on Sun Jan 27, 2019 7:40 pm, edited 1 time in total.
Reason: Updated code entry.
Code-seeking owl at your service

Post Reply