We report on observations of the low-mass X-ray binary 4U1626-67 performed
during the BeppoSAX Science Verification Phase. We present the broad-band
0.1-100 keV pulse averaged spectrum, that is well fit by a two-component
function: a 0.27 +/- 0.02 keV blackbody and an absorbed power law with a photon
index of 0.89 +/- 0.02. A very deep and narrow absorption feature at 38 keV,
attributable to electron cyclotron resonance, is clearly visible in the
broad-band spectrum. It corresponds to a neutron star magnetic field strength
of 3.3 x 10^{12} G. The 4U1626-67 pulse profiles show a dramatic dependance on
energy: the transition between the low energy (E<10 keV) "bi-horned" shape to
the high-energy (E>10 keV) sinusoidal profile is clearly visible in our data.
The modulation index shows a monotonic increase with energy.Comment: 4 pages, 2 figures. Uses espcrc2.sty (included). To appear in
Proceedings of "The Active X-ray Sky: Results from BeppoSAX and Rossi-XTE
