|
Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://xmm.vilspa.esa.es/sas/7.1.0/doc/espfilt/node6.html
Дата изменения: Mon Jul 9 04:25:09 2007 Дата индексирования: Sat Dec 22 08:45:33 2007 Кодировка: Поисковые слова: http www.badastronomy.com phpbb index.php |
Currently, only the Corner Method described above operates as required. This method effectively cuts the light curve at some number of sigma above the mean nominal level.
One future ``method'' may include one that determines a fixed count rate plus some ``delta''. In this case, the high energy count rate, say 8-12 keV, is created and the user selects an appropriate threshold. This will be the ``delta method''. This method should be able to select the light curve produced by the PPS which are point source excluded (*FBKTSR* files).
The other future method performs a ratio screening which compares the count-rate per unit area in the obscured corners of the detector to the same in the FOV using the 8-12 keV band.
The task leaves open the possibility to add new "methods" in future releases.