1. Dark Universe Observatory Into the darkness peering…

2. Dark Universe Observatory Into the darkness peering… CMU Richard Griffiths - PI GSFC Robert Petre – Deputy PI Keith Jahoda Richard Mushotzky Nicholas White MPE Guenther Hasinger – Co PI Peter Predehl Hans Boehringer Peter Friedrich Lothar Struder Norbert Meidinger Eckhard Kendziorra Elmar Pfeffermann Joseph Mohr – U. Illinois Zoltan Haiman – Columbia U. Xavier Barcons – IFC, Spain Lynn Cominsky – Sonoma State U. Patrick Henry – U. Hawaii Abraham Loeb – Harvard U. Takamitsu Miyaji - CMU BALL Steven Jordan William Purcell

3. Dark Universe Observatory Into the darkness peering… Advantages of X-ray Clusters Can be well modeled X-rays are optically thin thermal radiation from material nearly in collisional equilibrium Not as simple as the microwave background Simpler than supernovae, galaxies or AGN Fewer projection effects with X-ray selection X-rays are more peaked than galaxy distribution Fewer foreground/background objects Confining hot gas requires a real object of high mass Close relation of X-ray observable to cluster mass X-ray bright so seen to cosmological distances Crucial 0 < z < 1 interval where universal expansion changed from deceleration to acceleration

4. Dark Universe Observatory Into the darkness peering… Comparison of dark matter and x-ray cluster and group distribution every bound system visible in the numerical simulation is detected in the x-ray band - bright regions are massive clusters, dimmer regions groups, Dark matter simulation X-ray emission in simulation

5. Dark Universe Observatory Into the darkness peering… Sensitivity to Dark Energy equation of state Volume element Comoving distance Huterer & Turner

6. Dark Universe Observatory Into the darkness peering… Volume Element as a function of w Dark Energy  More volume at moderate redshift

7. Cluster Evolution and Cosmology The observables are the x-ray luminosity, temperature correlation function and their evolution with z x-ray properties directly connect to mass (Allen 2002) X-ray properties of clusters trace mass Mass temperature relation Horner et al 2001 Borgani and Guzzo2001 X-ray luminosity Mass kT optical luminosity X-ray luminosity kT

8. Dark Universe Observatory Into the darkness peering… Instrument Heritage ABRIXAS and XMM DUO has a high degree of heritage 7 X-ray mirrors, focal length 1.6m Total field of view 3.3 sq. degs. Effective resolution 45 arcs. 7 PN-CCDs, 0.3 – 10 keV

9. Dark Universe Observatory Into the darkness peering… The optical system E [keV] Telescope A EFF [cm -2 ] (1 telescope) 10 o

10. Dark Universe Observatory Into the darkness peering… New pn-CCD detector performance ADU Number of Events New pn-CCD 0.28 keV

11. Dark Universe Observatory Into the darkness peering…

12. Dark Universe Observatory Into the darkness peering… On Orbit Stowed in 63  Taurus Fairing Ball RS300 Spacecraft

13. Dark Universe Observatory Into the darkness peering… Observing Strategy (eff. > 60%) DUO Deep SurveyDUO Deep Survey: 150- DUO Wide Survey: 6000 deg 2  Within SDSS Northern Galactic Cap  8000 clusters with M > 2x10 14 M O (kT>3.5 keV) complete to z=0.7  Redshifts already available DUO Deep Survey: 176deg 2  1800 clusters, about 200 at z>1.0  Southern Sky (ping-pong operation)  Synergy with large SZ-Surveys  Optical follow-up from VLT Operations: Scan both regions in 2 years

14. Dark Universe Observatory Into the darkness peering… Rosati, Borgani & Norman ARAA 40, 539, 2002 Contiguous Goal DUO Deep DUO Wide

15. Dark Universe Observatory Into the darkness peering… XMM medium XMM/Chandra deep HEAO-1 ASCA LSS 100 1000 10000 BeppoSAX HELLAS2XMM DUO

16. Dark Universe Observatory Into the darkness peering… Redshift distributions 2-10 keV X-ray flux versus R-band magnitude for optically identified X-ray sources from Chandra and ASCA X-ray surveys.

17. Dark Universe Observatory Into the darkness peering… One Square Degree of Deep Survey

18. Dark Universe Observatory Into the darkness peering… Discrimination of Clusters vs. Active Galactic Nuclei

19. Dark Universe Observatory Into the darkness peering… Measurements of Dark Energy with DUO   w 

20. Dark Universe Observatory Into the darkness peering… P(k) Neutrinos

21. Dark Universe Observatory Into the darkness peering… Dark MatterHot Gas