Abstract
THREE sightings of the faint X-ray source 3U0405 + 10 with the Ariel V sky survey instrument have produced an improved position, with the error box now containing Abell 478. This distance class 6 Abell cluster is the most distant X-ray source yet detected. It has a (2–20 keV) X-ray luminosity of (5.4±1.1) × 1045 erg s−1.
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References
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ELVIS, M., COOKE, B., POUNDS, K. et al. Abell 478 and X-ray source 3U0405 + 10. Nature 257, 33–34 (1975). https://doi.org/10.1038/257033a0
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DOI: https://doi.org/10.1038/257033a0
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