The bare NSs Model and The Case of RX J1856.5-3754
For the surface layers of RX
J1856.5-3754 to be in form
of condensed iron Þ B ğ 3-5 x1013 G, high but well
below the magnetar range
For such Bıs: featureless 0.1-2 keV
spectrum. Deviations
from a bb distribution less than 4%
Compatible with the constraints from the bow-shock
nebula: B12 t6 ~ 3 (star age ~ 105 yrs)
v Well within the
~10% accuracy limit for spectral fit to Chandra
data / calibration uncertainties
of the LETGS (Braje
& Romani, 2002; Drake et al, 2002)