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With Special Thanks to Northrop Grumman for Development and Proposal Support

WHIMEX Doing High Resolution X-ray Spectroscopy Right Webster Cash, Chuck Lillie and the WHIMEx Team. With Special Thanks to Northrop Grumman for Development and Proposal Support. The WHIMEx Team Representative of the Community. W. Cash Colorado N . Arav Virginia Tech

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With Special Thanks to Northrop Grumman for Development and Proposal Support

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  1. WHIMEXDoing High ResolutionX-ray Spectroscopy RightWebster Cash, Chuck Lillieand the WHIMEx Team With Special Thanks to Northrop Grumman for Development and Proposal Support Approved for public release, distribution unlimited

  2. The WHIMEx TeamRepresentative of the Community W. Cash Colorado N. Arav Virginia Tech S. Barber Open U M. Bautz MIT J. Bregman Michigan N. Brickhouse CFA M. Elvis CFA R. Heilman MIT A. Holland Open U A. Hornschemeier GSFC D. Huenemoerder MIT C. Lillie NGAS R. McEntaffer Iowa R. Mushotzky Maryland P. Nicastro CFA P. Oakley Colorado S. O’Dell MSFC A. Ptak GSFC M. Schattenburg MIT M. Shull Colorado H. Tsunemi Osaka F. Walter Stony Brook L. Winter Colorado S. Wolk SA/CfA W. Zhang GSFC Approved for public release, distribution unlimited

  3. Designed for the WHIM Problem • The WHIM is the highest profile science that we can addressin an Explorer • The hugely exciting science of AGN’s, stars etccomes free after WHIMproblem is solved. • IXO Requirement was R~3000, A~1000cm2 (We fought for a decade to get IXO to raise R above 300) • IXO is gone, and there’s nothing else on the high resolution horizon Approved for public release, distribution unlimited

  4. Origin of Concept • IXO Technology Studies and Older Suborbital Work • Science from Decadal • Will Zhang’s slumped glass Wolter optics (NUSTAR/IXO) • MIT Flat Mirrors and Metrology • Web Cash and Randy McEntaffer’s Off-plane Gratings • CCD Arrays - Open U, Osaka U, MIT, GSFC Reoptimized for an Explorer Approved for public release, distribution unlimited

  5. Reduced Complexity • A Single Wolter Mandrel • A Single Grating Master • 15” Quality • 7m Focal Length with Deployable Bench Approved for public release, distribution unlimited

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  8. Payload Approved for public release, distribution unlimited

  9. Figure of Merit Approved for public release, distribution unlimited

  10. OVII and OVIII Diagnostic of WHIM Model WHIM Mass Distributions 0.016 OVIII OVII 0.014 OVI detection range 0.012 Differential Mass Fraction No Galactic Superwinds 0.010 Galactic Superwinds 0.008 5 6 7 Log T (K) 10-03662_1025a_154 Approved for public release, distribution unlimited

  11. Filament Column Densities Approved for public release, distribution unlimited

  12. Simulated WHIMEx Spectrum Approved for public release, distribution unlimited

  13. WHIMExAGN SimulationsCOSWHIMexChandra Approved for public release, distribution unlimited

  14. High Resolution is Essential to Measuring the Basic Parameters(Slide courtesy of Schindhelm and Arav) Shape of line is crucial to separating continuum from saturated line. Without E/E > 3000, can miss energy outflow by factor of 100! Approved for public release, distribution unlimited

  15. AR Lac binary; (=0.25,  v = 230 km/s) Fe XVII Fe XVII 10 Counts s-1 A-1 5 0 16.7 16.8 16.9 17.0 17.1 Wavelength (A) 10-03662_1022_154 Approved for public release, distribution unlimited

  16. Conclusions • WHIMEx is Astronomy for and by the community It is the IXO XGS channel repackaged • Can be implemented at the low end of the cost scale under consideration. • Important Core Science and Exploration that Cannot be Addressed Other Ways • Wide Open Guest Observing • Can Be Built Now, But Needs Prototype Demonstration • Also Needs a Community Statement of Why It is Relevant to the Decadal. There is much mischief between competing disciplines Approved for public release, distribution unlimited

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