Abstract
ABSTRACT The X-ray source RXJ0002+6246 was discovered close to the supernova remnant CTB1 in aROSAT observation performed in 1992. The source phenomenology (soft spectrum, apparentlack of counterparts, possible pulsations at 242 ms, hints for surrounding diffuse emission)led to interpret it as an isolated neutron star in a new supernova remnant. We have analysedan archival XMM-Newtonobservation performed in 2001. The source coordinates, as com-puted on the XMM-Newtonimages, coincide with those of a bright source listed in opticaland infrared catalogues. The X-ray spectrum is well described by an optically thin plasmamodel. No fast pulsations are seen, nor clear evidence of a supernova remnant associated tothe source. Thus, we conclude that RXJ0002+6246 is not an isolated neutron star, but theX-ray counterpart of the bright optical/infrared source, most likely a F7 spectral class starlocated at about 0.2kpc.Key words: X-rays: individual (RXJ0002+6246, PSRJ0002+6246) – X-rays: stars – ISM:individual (G117.7+0.6) – supernova remnants.
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