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EROSITA: The German Quest for Galaxy Clusters Christian Schmid & Ingo Kreykenbohm Dr. Remeis-Sternwarte Bamberg / ECAP Tautenburg, May 03, 2013 on behalf.

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Presentation on theme: "EROSITA: The German Quest for Galaxy Clusters Christian Schmid & Ingo Kreykenbohm Dr. Remeis-Sternwarte Bamberg / ECAP Tautenburg, May 03, 2013 on behalf."— Presentation transcript:

1 eROSITA: The German Quest for Galaxy Clusters Christian Schmid & Ingo Kreykenbohm Dr. Remeis-Sternwarte Bamberg / ECAP Tautenburg, May 03, 2013 on behalf of the eROSITA team © T. Legault

2 2 PI: Peter Predehl Co-Is: Hans Böhringer, Ulrich Briel, Hermann Brunner, Evgeniy Churazov, Michael Freyberg, Peter Friedrich, Günther Hasinger, Eckhard Kendziorra, Dieter Lutz, Joseph Mohr, Norbert Meidinger, Kirpal Nandra, Mikhail Pavlinsky, Thomas Reiprich, Andrea Santangelo, Jürgen Schmitt, Axel Schwope, Matthias Steinmetz, Lothar Strüder, Rashid Sunyaev, Jörn Wilms Project Scientist: A. Merloni Project team with members from the following institutes Institutes: Max-Planck-Institut für extraterrestrische Physik, Garching/D, Space Research Institute Moscow (IKI)/Ru Univ. Tübingen/D, Univ. Hamburg/D, Univ. Erlangen-Nürnberg/D, Leibniz-Institut für Astrophysik Potsdam/D, Max-Planck-Institut für Astrophysik, Garching/D, Universitäts-Sternwarte München (LMU)/D, Argelander-Institut für Astronomie, Bonn/D, Deutsches Zentrum für Luft- und Raumfahrt (DLR)/D Industry: Media Lario (Mirrors), Kayser Threde (Mirror Structure), Carl Zeiss (Mandrels), Invent (Telescope Structure), pnSensor (CCDs), EHP (Heatpipes), RUAG (Mechanisms), + many more Team

3 3 Goal Detection of 100.000 Galaxy Clusters test cosmological models!

4 4 Galaxy Clusters 200-300 from Einstein (1978-1981) ~1000 published from ROSAT (1990-1999) ~1000 more in the ROSAT archive 200-300 from the XMM-Newton archive in total less than 3000 clusters 10-15 with redshift z > 1 © NASA

5 5 Goal Detection of 100.000 Galaxy Clusters test cosmological models! All-Sky Survey (4 yr) Deep Survey (200 sqd, ½ yr) Deep Hole (Pointing, 1 yr) additional Pointings eROSITA How? Large effective area: many mirror shells x several modules Large Field of View: = 1 degree, CCD: 2.88×2.88cm 2 Good spatial resolution: 15 arcsec on-axis extended ROentgen Survey with an Imaging Telescope Array extended ROentgen Survey with an Imaging Telescope Array

6 6 ~ 30 × ROSAT ~ 2 × XMM-Newton (MOS+PN) Sensitivity deep survey of the whole Sky! Expectation: 100.000 clusters (DE) ~100 clusters @ z>1.5 3 Million AGN [450,120, 36, 10] @ z > [6, 7, 8, 9]

7 7 Sources 1970s: 4th Uhuru catalogue: 339 sources 1978-1981: Einstein: 835 sources 1990-1999: ROSAT: 125000 bright sources 1999ff: Chandra: 94767 (CSC) 1999ff: XMM-Newton: 191870 sources (2XMM) 2013ff: eROSITA: 3 000 000 sources

8 8 Lots of Science AGN evolution Time resolved accretion physics (variabilities hours - years) Stellar variability on different time scales Interstellar Medium (spectroscopy, dust scattering etc.) GRB afterglows (~50) CVs, XBs, Isolated Neutron Stars, SNRs etc.

9 9 History Spectrum-XG Jet-X, SODART, etc. ROSAT 1990-1998 First X-ray all-sky survey with an imaging telescope ABRIXAS 1999 To extend the all-sky survey towards higher energies ROSITA 2002 ABRIXAS science on the International Space Station Dark Energy 10 5 Clusters of Galaxies Negotiations between Roskosmos and ESA on a "new" Spectrum-XG mission (2005) Agreement between Roskosmos and DLR (2007) eROSITA Spektr-RG Launch: 2014

10 10 Спектр рентген-гамма (SRG) Launch:Nov. 2011 from Baikonur Launcher: Soyuz-Fregat Platform:Navigator (Lavochkin) Orbit:Low Earth Orbit (600 km, 30° inclination) Payload:ART-XC(IKI) eROSITA(MPE+…) LOBSTER(LU+…) SRC(SRON, ISAS, GSFC, +MPE) Mission:4 yrs survey + 1 yr pointing + … SRG-Mission

11 11 Спектр рентген-гамма (SRG) Launch:2014 from Baikonur Launcher: Soyuz-Fregat Platform:Navigator (Lavochkin) Orbit:Langrange Point L2 Payload:ART-XC(IKI) eROSITA(MPE+…) Mission:4 yrs scanning survey + 3.5 yrs pointing + … SRG-Mission

12 12 SRG-Mission

13 13 Telescope 7 mirror modules + baffles CFRP Honeycomb Structure lightweight thermally stable Hexapod Mounting no thermal connection flexible: balances mechanical stress Radiators Sunshield Startrackers

14 14 Telescope 7 Cameras –CCD-Module in Casing (-80°C) –Cu-Proton-Shield (20°C) 7 Mirror Modules Spider Wheel Mirrors 7 Cameras –CCD-Module in Casing (-80°C) –Cu-Proton-Shield (20°C)

15 15 Mirror System 7 Mirror Modules, 54 shells each, 360mm Ø, f=1.600mm inner 27 shells to be replicated from old ABRIXAS mandrels magnetic electron deflector, X-ray baffle

16 16 Mirror Module

17 17 Camera Framestore CCD: 384x384 pixels Pixelsize: 75µm. Cycle time: 50msec Energy resolution: 138eV @ 6keV Measurements at C K (277eV) and Mn K (5,9 keV)

18 18 Temperature (1) (2)(3)(4) (5) Trick: use melting enthalpy! Freezing at -81°C (~100kJ/kg) Temperature remains constant by itself! Problem: CCDs need cooling

19 19 SRG-mission scan: 4h

20 20 Exposure

21 21 Data Rights IKI (Russia)MPE (Germany)

22 ECAP Contribution 22 Near Real Time Analysis (NRTA) Software (preprocessing of telemetry data, monitoring of housekeeping parameters, quick-look on scientific data) Simulations (analyse technical and scientific performance, produce test data for software development)

23 23 Slew Survey Effect of the Slew Survey

24 Survey PSF 24

25 25 Simulations

26 26 Cygnus Loop M. Sasaki

27 Signature of the "Detailed Agreement" (Reichle, Wörner, Perminov) Mr. Putin asks about Dark Energy... Programmatic Status

28 2014 in Байконур Thank you for your Attention!


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