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XMM‐Newton view of the Hubble Deep Field‐North and Groth‐Westphal strip regions
Author(s) -
Miyaji T.,
Griffiths R.E.,
Lumb D.,
Sarajedini V.,
Siddiqui H.
Publication year - 2003
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200310007
Subject(s) - physics , hubble deep field , astrophysics , cosmic variance , field (mathematics) , flux (metallurgy) , monte carlo method , cosmic cancer database , astronomy , stars , hubble space telescope , statistics , redshift , galaxy , materials science , mathematics , pure mathematics , metallurgy
We report the progress on our analysis of two deep XMM observations in the areas of Hubble Deep Field‐North and the Groth‐Westphal Strip field. We present the source detection method, Monte‐Carlo simulation on source detection, and our preliminary Log N – Log S relations. Comparing these two fields and other fields in literature, we find up to ∼30% variations in number counts near our flux limits, which are most likely to be due to cosmic variance. This serves as a pilot study for a more systematic investigation. The nature of the X‐ray sources in the Groth‐Westphal field is also discussed in terms of hardness ratios, morphology and spectroscopic properties.