XMM-NEWTON X-RAY OBSERVATION OF THE HIGH-MAGNETIC-FIELD RADIO PULSAR PSR J1734-3333

Using observations made with the XMM-Newton Observatory, we report the probable X-ray detection of the high-magnetic-field radio pulsar PSR J1734-3333. This pulsar has an inferred surface dipole magnetic field of B = 5.2 x 10(13) G, just below that of one anomalous X-ray pulsar. We find that the pulsar has an absorbed 0.5-2.0 keV flux of (5-15) x 10(-15) erg s(-1) cm(-2) and that its X-ray luminosity L-X is well below its spin-down luminosity (E) over dot, with L-X < 0.1 (E) over dot. No pulsations were detected in these data although our derived upper limit is unconstraining. Like most of the other high-B pulsars, PSR J1734-3333 is X-ray faint with no sign of magnetar activity. We tabulate the properties of this and all other known high-B radio pulsars with measured thermal X-ray luminosities or luminosity upper limits, and speculate on a possible correlation between L-X and B.