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S. Friedrich

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Review Open access Sep 2026

Investigation of Stray‐Light Patterns in the eROSITA X‐Ray Cameras

eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the soft X‐ray instrument aboard the Spectrum‐Roentgen‐Gamma (SRG) mission, developed under the responsibility of the Max Planck Institute for Extraterrestrial Physics (MPE). It was launched on 13 July 2019 and operates at the second Lagrangian p...

Veronika Stieglitz, Peter Friedrich, S. Friedrich et al. · 0 citations
Open access Aug 2026

Rapid Orbital Decay in the Ultracompact Double-degenerate Binary eRASSU J060839.5–704014

We present timing and spectral analysis of the recently identified ultracompact double-degenerate (DD) white dwarf binary eRASSU J060839.5–704014 using observations from NICER and Einstein Probe (EP), together with archival XMM-Newton data. By phase-connecting the long-term XMM-Newton, NICER, and EP observations, we ob...

Rahul Sharma, C. Maitra, F. Haberl et al. · 0 citations

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