Evidence for micrometeoroid damage in the pn-CCD camera system aboard XMM-Newton

Details Evidence for micrometeoroid damage in the pn-CCD camera system aboard XMM-Newton Evidence for micrometeoroid damage in the pn-CCD camera system aboard XMM-Newton

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...375l...5s&link_type=abstract

Astronomy and Astrophysics, v.375, p.L5-L8 (2001)

Astronomy and Astrophysics

Astrophysics

12

Xmm-Newton, Back Illuminated Pn-Ccds, Radiation Hardness, Micrometeoroids, Interstellar Dust

Scientific paper

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.

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