2002/11/30 by T. Miyaji, R. E. Griffiths, D. Lumb +4 · 11 citations
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Cosmic variance #Field (mathematics) #Flux (metallurgy) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Hubble Deep Field #Hubble space telescope #Monte Carlo method #Physics #Redshift #Stars #Statistics #astro-ph
paper · pdf · doi:10.1002/asna.200310007
published in Astronomische Nachrichten 324(1-2), 24-27 (Wiley) · Replaced Fig. 3 which had an incorrect data point. Astron. Nachr. issue dedicated to the proceedings of the workshop "X-ray Surveys in the light of New Observatories", Sep. 2002, Santander, Spain
openalex publication_date 2003/02/01 · arxiv created 2003/05/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract 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.