Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xmm.vilspa.esa.es/sas/8.0.0/doc/backcorr/backcorr.html
Дата изменения: Wed Jul 2 11:36:31 2008
Дата индексирования: Fri Sep 5 22:13:41 2008
Кодировка:
Поисковые слова: arp 220

XMM-Newton Science Analysis System


backcorr (backcorr-3.6) [xmmsas_20080701_1801-8.0.0]

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backcorr

Abstract:

backcorr makes a background spectrum appropriate to the accumulation region used for a given source spectrum. The task calls arfgen twice; once for the source region and once for the background region. The regions are read directly from the input datasets by arfgen . This gives the integrated effective area as a function of energy over both regions. From these two effective area curves, a direct normalization of the input background spectrum is performed.