5.4.1 A few potentials

Here we list some of the standard potentials available in NEMO, in a variety of units, so not always $G=1$!

Remember that most NEMO program use the keywords potname= for the identifying name, potpars= for a list of parameters as listed below and an optional potfile= for the few that have an associated datafile for the potential. The parameters listed in potpars= will always have as first parameter the pattern speed in cases where rotating potentials are used. A Plummer potential with mass 10 and core radius 5 would be hence be supplied as: potname=plummer potpars=0,10,5.

plummer: Plummer potential (BT, pp.42, eq. 2.47) $$\Phi = - { M \over { {(r_c^2 + r^2)}^{1/2} } }$$

$\Omega_p$

Pattern Speed

$M$

Total mass

$r_c$

Core radius

Figure: Plummer potential properties