In 2015, CAASTRO and eROSITA_DE signed a Memorandum of Understanding (MoU) that enables collaboration on projects requiring combined data from eROSITA (to be launched in 2016) and from Australian wide-field facilities (including ASKAP, MWA, SKAMP, Parkes, ATCA, SkyMapper, AAT, TAIPAN). To briefly summarise, this will oversee science projects that:

  • require the use of both eROSITA_DE and CAASTRO data
  • involve at least one member from each of eROSITA_DE and CAASTRO
  • do not conflict with existing eROSITA_DE or CAASTRO projects
  • (optionally) allow participation by undergraduate and postgraduate students
  • adhere to the existing policies for the individual facilities involved (e.g. proprietary periods, data access, survey teams, observing time, publications)

Such projects will be formally proposed to, approved by and monitored by a joint CAASTRO/eROSITA_DE Management Committee, as per the details in the MoU. The CAASTRO/eROSITA_DE Management Committee currently consists of :

  • Prof Paul Nandra (eROSITA_DE)
  • Prof Elaine Sadler (CAASTRO)
  • Dr Andrea Merloni (eROSITA_DE) and
  • Ms Kate Gunn (CAASTRO).

If you instead have just a nice idea, and wish to express interest  in developing it, or to be put in touch with potential collaborators within the partner organisation, please complete the expression of interest (EoI) form (see Resources below), and send to  

Full proposals should be submitted by completing the project template form (see Resources below), and sending it to


For those not familiar with the capabilities on offer, here is a very brief summary of some of the various instruments to be used under this agreement:

- eROSITA ( launch 2016; all-sky X-ray imaging, 0.5-10 keV, 15"-30" angular resolution; eROSITA_DE covers Galactic longitudes 180 < l < 360. Point of contact for inquiries:  eROSITA_DE Working Group chairs ( News and semi-regular Bulletins highlighting the progress of the project can be found at

- ASKAP ( early science 2015; all-sky (decl < +30) radio imaging & spectroscopy, 700-1800 MHz, 15" angular resolution. Contact person: Prof Ray Norris ( and Prof Simon Johnston, (

- MWA ( fully operational; all-sky (decl < +30) radio imaging, 80-240 MHz, ~2.5' resolution. Contact person:  +Prof  Steven Tingay (

- SKAMP ( operational 2014; searches for fast radio transients, 840 MHz, 45" angular resolution. Contact person: Prof Anne Green (

- ATCA ( fully operational; pointed radio imaging and spectroscopy, 1.3-105 GHz, up to 0.2" angular resolution. Contact: Prof Ray Norris (

- Parkes ( fully operational;  pointed pulsar observations and spectroscopy, 0.7-22 GHz, 14' resolution at 1.4 GHz. Contact: Prof Matthew Bailes (

- SkyMapper (  operational 2014; all-sky (decl < 0) optical photometry & transients, uvgriz filters, 1"-2" angular resolution. Contact person: Dr Christian Wolf (

- AAT ( fully operational; 3.9m telescope in Australia, focus on wide-field multi-fibre and multi-IFU spectroscopy, 1"-2" angular resolution. Contact person: Prof Andrew Hopkins (

- TAIPAN survey on ANU's UK Schmidt telescope ( to commence in 2015; galaxy redshift survey of southern sky, 500,000 redshifts to z~0.2 with r~17, K~14. Contact person: Prof Andrew Hopkins (


Follow-up of wide-area X-ray surveys: science, facilities, program, April 2016

An eROSITA/CAASTRO/4MOST workshop, Ringberg Castle, Bavaria. Program and links to presentations are below:

Day One - 25th April 2016
1st session: Chair M. Brusa
K. Nandra: Welcome
A. Merloni: eROSITA  
M. Salvato: eROSITA AGN followup
A. Finoguenov: eROSITA clusters followup
T. Reiprich: eROSITA clusters cosmology expectations
K. Dolag: Progress in cosmological hydro simulations 

2nd session: Chair M. Salvato
R. de Jong: 4MOST: Overview of the instrument, its operations plan, and science
J. Richard: 4MOST Cosmology survey
G. Worseck: Constraining the AGN Contribution to Reionization with 4MOST
N. Clerc: Clusters survey with SPIDERS (and XMM-XXL)
K. Romer - Potential synergies between eROSITA, Dark Energy Survey, and the XMM Cluster Survey
S. Driver: Synergies with GAMA and WAVES spectroscopic surveys
L. Davies: WAVES deep fields
A. Hopkins: The TAIPAN galaxy survey
M. Owers: Dynamics with spectroscopic followup of eROSITA clusters
A. Saro: Velocity dispersion measurements for ~100 SZE clusters
Day Two - 26th April 2016
3rd session: Chair A. Rau
E. Sadler: CAASTRO + High-frequency radio AGN population from the southern AT20G survey 
N. Seymour: All-sky low-frequency survey with MWA
G. Anderson: eROSITA transients and SKA Pathfinders
M. Salvato on behalf of C. Wolf: Skymapper
T. Schrabback/J. Dietrich: Clusters mass calibration with weak lensing
S. Miyazaki: The HyperSupremeCam (HSC) wide survey
M. Oguri: Cluster searches with HSC
G. Smith: LSST and cluster weak lensing

4th session: Chair P. Popesso
R. Dupke/ T. Benitez: JPAS: The Javalambre-Physics of the Accelerating Universe Astrophysical Survey
N. Napolitano: VST deep imaging survey
G. Rudnick: DECam Legacy Survey (DECaLS)
C. Collins: Growth of baryonic matter in the centres of rich clusters
A. Edge: Clusters BCG and AGN feedback
S. Paltani: Photometric redshifts for Euclid
J. Mohr: Updates on cluster cosmology from SPT and Planck
C. Porciani: The impact of spectroscopic follow-up on eROSITA cosmology
Day Three - 27th April 2016
5th session: Chair A. Del Moro
J. Aird: The distribution of BH growth across the galaxy population
A. Bongiorno: AGN host mass function
M. Banerji: Hyper-luminous dust-obscured quasars
A. Pillepich - Exploring numerical implementations of AGN feedback beyond the Illustris model
R. McMahon: AGN with VHS+DES
T. Nagao: AGN studies with HSC survey
T. Shanks: QSO Cosmology via eROSITA+4MOST