We detected a nearby ( d = 360 pc ) , old ( \tau = 5 Myr ) pulsar B1133+16 with Chandra .
The observed pulsar ’ s flux is ( 0.8 \pm 0.2 ) \times 10 ^ { -14 } ergs cm ^ { -2 } s ^ { -1 } in the 0.5–8 keV band .
Because of the small number of counts detected , the spectrum can be described by various models .
A power-law fit of the spectrum gives a photon index \Gamma \approx 2.5 and an isotropic luminosity of 1.4 \times 10 ^ { 29 } ergs s ^ { -1 } in the 0.5–8 keV band , which is about 1.6 \times 10 ^ { -3 } of the spin-down power \dot { E } .
The spectrum can also be fitted by a blackbody model with a temperature of \approx 2.8 MK and a projected emitting area of \sim 500 m ^ { 2 } , possibly a hot polar cap .
The X-ray properties of PSR B1133+16 are similar to those of other old pulsars observed in X-rays , particularly the drifting pulsar B0943+10 .