A search for radio pulsations from neutron star companions of four
  subdwarf B stars
  We searched for radio pulsations from the potential neutron star binary
companions to subdwarf B stars HE 0532-4503, HE 0929-0424, TON S 183 and PG
1232-136. Optical spectroscopy of these subdwarfs has indicated they orbit a
companion in the neutron star mass range. These companions are thought to play
an important role in the poorly understood formation of subdwarf B stars. Using
the Green Bank Telescope we searched down to mean flux densities as low as 0.2
mJy, but no pulsed emission was found. We discuss the implications for each
system.
