[ASA] eROSITA data release coming soon; and early availability

[Nicholas Tothill]

Hi ASA folks,

In mid-2026, the German eROSITA consortium (eROSITA-DE) will publically 
release the eRASS:3 catalog, with all the sources detected after 
stacking the X-ray data gathered in  1.5  years ( i.e. three passes over 
the sky). The partnership between Australian astronomers and eROSITA-DE 
aims at facilitating collaboration and provides exciting new 
opportunities for multi-wavelength astronomy projects across the 
southern sky.

  AAL facilitates the collaboration from the Australian side, and more 
details about the collaboration, the surveys involved and the points of 
contact can be found at
https://url.au.m.mimecastprotect.com/s/vq2GC91WPRTMzOZkZHofRSq_5Xs?domain=astronomyaustralia.org.au
If you'd like to learn more about how to work with eROSITA, optical and 
radio data, see
https://url.au.m.mimecastprotect.com/s/cIH0C0YKPviMkyEGEHDhDS9q0WL?domain=astronomyaustralia.org.au 

with jupyter notebooks, slides and talks.

The eRASS:3 catalogues and their multiwavelength counterparts can 
already be used within the AAL/eROSITA collaboration. If you have a 
project in mind, please get in touch, and we will try our best to 
facilitate the approval of the project and the access to the data.

There are more eROSITA data that will remain proprietary until 2028, but 
are available now through the collaboration (including, among others, 
the full catalogue of the first 4.4 passes, and the event level 
information, such as images, spectra and lightcurves). Identification of 
counterparts for this deeper catalogue is ongoing. Again, if you have a 
project in mind you do not need to wait for the data to become public. 
You just need to reach out to us!

Best wishes,
the AAL/eROSITA_DE Management Committee:
Werner Becker (MPE)
Marcus Brueggen (Hamburg)
Sabrina Einecke (Adelaide)
Mara Salvato (MPE)
Nick Tothill (Western Sydney)
Christian Wolf (ANU)