Contributed Talk - Splinter eROSITA

Tuesday, 13 September 2022, 16:20   (SFG 0140 / virtual eROSITA)

Broad band maps of eROSITA and their comparison with the ROSAT survey

Xueying Zheng, Gabriele Ponti, Michael Freyberg, Jeremy Sanders, Nicola Locatelli, Andrea Merloni, Andy Strong, Manami Sasaki, Werner Becker, Chandreyee Maitra, Georg Lamer, Peter Predehl, Konstantina Anastasopoulou, Juergen Kerp
Max-Planck-Institut für extraterrestrische Physik

The hot Galactic and circumgalactic plasma have firstly been directly resolved in X-ray by the ROSAT all-sky survey (RASS) X-ray background maps since 90s. Thanks to the eROSITA, it is now possible to resolve the diffuse X-ray emission in an unprecedented energy resolution and position accuracy. Here, we present the soft band maps from the SRG/eROSITA eRASS1, ranging from 0.2 to 5.0 keV with point sources and instrumental backgrounds subtracted. We cross correlate the measurements by comparing the eROSITA-observed diffuse X-ray emission with the RASS X-ray background maps. Due to the variations between the two instruments, this comparison enables one to determine whether there are any potential systematic impacts.