... sample

Tables 1 and 2 are only available in electronic form at http://www.aanda.org

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...2,

INAF personell resident at ASDC.

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... level

This corresponds to about one spurious source over each of the four XMM-Newton fields.

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... (SAS 6.1.0

http://xmm.vilspa.esa.es/external/xmm_sw_cal/sas_frame.shtml

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... 2003

K.A. Arnaud, 2003, "XSPEC User Guide for version 11.3'' http://heasarc.gsfc.nasa.gov/docs/software/lheasoft/xanadu/~xspec/manual/manual.html

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