Stationary Photons, A Gang Of Six

What are these ($t_c$,$x$,$t_g$,$t_T$) and ($t_g$,$x$,$t_c$,$t_T$)?  They exist in the $t_T$ time dimension.  Have a force field around them when stationary.  Exchange energy between a time dimension and space, like a photon. For that matter,

These are stationary photons, all six of them.