The SRG/eROSITA All-Sky Survey: SRG/eROSITA cross-calibration with Chandra and XMM-Newton using galaxy cluster gas temperatures

Understand

Galaxy cluster gas temperatures ($T$) play a crucial role in many cosmological and astrophysical studies.

• However, it has been shown that $T$ measurements can vary between different X-ray telescopes.
• These $T$ biases can propagate to several cluster applications for which $T$ can be used.
• Thus, it is important to accurately cross-calibrate X-ray instruments to account for systematic biases.