Serendipitous X-ray Surveys with XMM-Newton

Computer Science – Performance

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Scientific paper

XMM-Newton provides X-ray observations with large-throughput and a wide, ``flat" field of view (30 arcmin. diameter), making it ideally suited to X-ray survey work. Observations with the XMM-Newton EPIC cameras, even with modest few-hour exposures, reach X-ray flux limits comparable with deep Chandra pointings, fainter than the longest ROSAT pointings in the soft X-ray band, and over an order of magnitude fainter than has been possible with ASCA or SAX in the hard X-ray band. XMM-Newton observations will thus provide an unrivalled serendipitous X-ray survey, growing at a rate <50,000 new sources per year. In this paper I will describe the actual performance of XMM-Newton for X-ray surveys based on early observations, outline the follow-up/identification programme for the XMM-Newton serendipitous sky survey that is being undertaken by the XMM-Newton Survey Science Centre and report on initial results from our first observing runs.

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