TheXMMLarge-Scale Structure survey: the X-ray pipeline and survey selection function
نویسندگان
چکیده
منابع مشابه
The XMM Large Scale Structure survey: The X-ray pipeline and survey selection function
We present the X-ray pipeline developed for the purpose of the cluster search in the XMM-LSS survey. It is based on a two-stage procedure via a dedicated handling of the Poisson nature of the signal: (1) source detection on multi-resolution wavelet filtered images; (2) source analysis by means of a maximum likelihood fit to the photon images. The source detection efficiency and characterisation...
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We present here initial results on the X–ray Cluster Luminosity Function (XCLF) from the Bright SHARC sample of distant X–ray clusters of galaxies. This sample is 97% complete in its optical identifications and contains 12 X–ray luminous clusters in the redshift range 0.3 ≤ z ≤ 0.83 (median z = 0.42) and 1.1 ≤ Lx ≤ 8.5 × 10 erg s−1 [0.5–2.0 keV]. We present a preliminary selection function for ...
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این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2006
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2006.10881.x