Abstract
The coincidence of multiple x-rays in a detection cell within one CCD frame - an effect known as pile-up - is a significant source of spectral contamination for bright sources observed with the AXAF CCD Imaging Spectrometer (ACIS). Investigation of algorithms for correcting contaminated spectra is underway. In cases where such algorithms fail, the observer may wish to discard events from the core of the AXAF point spread function (PSF), computing spectra using only events from the PSF wings, where pile-up effects are reduced. This work investigates the effectiveness of this technique for an isolated on-axis point source, using event lists produced by a Monte-Carlo simulation of the ACIS instrument.
Original language | English (US) |
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Pages (from-to) | 30-35 |
Number of pages | 6 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 3444 |
DOIs | |
State | Published - 1998 |
Event | Proceedings of the 1998 Conference on X-Ray Optics, Instruments, and Missions - San Diego, CA, USA Duration: Jul 19 1998 → Jul 22 1998 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering