Volume 375, Number 1, August III 2001
|Page(s)||L5 - L8|
|Published online||15 August 2001|
Evidence for micrometeoroid damage in the pn-CCD camera system aboard XMM-Newton
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße, 85748 Garching, Germany
2 ESA/ESTEC, Postbus 299, 2200 AG Noordwijk, The Netherlands
3 KETEK GmbH, Am Isarbach 30, 85764 Oberschleißheim, Germany
4 Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
Corresponding author: L. Strüder, email@example.com
Accepted: 26 June 2001
The mirror systems of the X-ray observatory XMM-Newton were designed to image X-rays up to 15 keV by grazing incidence reflection onto a focal plane, equipped with Charge Coupled Devices (CCDs). In orbit #156 we have observed a sudden increase of about 35 "bright" pixels spread over 15 cm2 in the pn-CCD camera system. The amount of locally generated leakage current cannot be explained by ionizing particles. We suggest that a micrometeoroid scattered under a small angle off the X-ray telescope mirror surface finally reached the focal plane detector and produced the damage.
Key words: telescopes / space vehicles: instruments / meteors, meteoroids / interplanetary medium
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.