The striking case of RX J1856.5-3754
  Optical excess of ~6 over the Rayleigh-Jeans tail of the X-ray best fitting bb (Walter & Lattimer, 2002)

 No X-ray pulsations: upper limit on the pulsed fraction £3% (Ramson et al, 2002, Drake et al, 2002) Þ
£1%  Burwitz et al., 2002; Trumper , Cospar meeting

  d ~120-140 pc (Kaplan et al, 2001; Walter & Lattimer, 2002) Þ radiation radius of only 5-6 km! (Drake et al, 200