SIMBAD references

2001A&A...375L...5S - Astronomy and Astrophysics, volume 375, L5-8 (2001/8-3)

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

STRUEDER L., ASCHENBACH B., BRAEUNINGER H., DROLSHAGEN G., ENGLHAUSER J., HARTMANN R., HARTNER G., HOLL P., KEMMER J., MEIDINGER N., STUEBIG M. and TRUEMPER J.

Abstract (from CDS):

The mirror systems of the X-ray observatory XMM-Newton were designed to image X-rays up to 15keV 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 15cm2 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.

Abstract Copyright: ∼

Journal keyword(s): XMM-Newton - back illuminated pn-CCDs - radiation hardness - micrometeoroids - interstellar dust

Simbad objects: 3

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