PSR J1713 +0747, as it is known, has a tiny white dwarf companion star, and the two orbit each other exceptionally predictably. (discovermagazine.com)
This turns out to be non-uniform, since this cool sub-stellar object is strongly irradiated by its much hotter white dwarf companion. (sciencedaily.com)
12 systems were resolved as new binaries, including the discovery of a new white dwarf companion to the star HD8049. (arxiv.org)