2007MNRAS.379.1484R

We report on X-ray, optical, infrared and radio observations of the isolated neutron star 1RXSJ214303.7+065419 (RBS1774). The X-ray observation was performed with the high-resolution camera onboard the ChandraX-ray Observatory, allowing us to derive the most accurate position for this source (; 90 per cent uncertainty of 0.6arcsec). Furthermore, we confirmed with a higher spatial accuracy the point-like nature of this X-ray source. Observations were taken in B, V, r', i', J, H and K_s filters using the Keck, Very Large Telescope (VLT), Blanco and Magellan telescopes, while radio observations were obtained from the Parkes single dish at 2.9GHz and 708MHz. No plausible optical and/or infrared counterpart for RBS1774was detected within the refined sub-arsecond ChandraX-ray error circle. Present upper limits to the optical and the infrared magnitudes are r' > 25.7 and J > 22.6 (5σ confidence level). Radio observations did not show evidence for radio pulsations down to a luminosity at 1.4GHz of L < 0.02mJykpc². Furthermore, no convincing evidence for Rotating Radio Transients-like radio bursts has been found. Our results on RBS1774are discussed and compared with the known properties of other thermally emitting neutron stars.