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Parameter Requirement Science Drivers Instruments
Mirror Effective
Area
3 m2 @1.25 keV
0.65 m2 @ 6 keV
0.015 m2 @ 30 keV
Black Hole Evolution
Strong gravity
Strong gravity
 
Spectral Resolution
(FWHM), FOV, bandpass
ΔE = 2.5 eV,  2 arcmin,  0.3 – 7 keV
ΔE = 10 eV,  5 arcmin,   0.3 – 7 keV
ΔE =150 eV, 18 arcmin,  0.1– 15 keV
E/ΔE = 3000, point src,  0.3 – 1 keV
Galaxy Cluster Evolution
Cosmic Feedback
Black Hole Evolution
Cosmic Web
XMS
XMS
WFI/HXI
XGS
Angular Resolution 5 arcsec HPD,   0.3 – 7 keV
5 arcsec HPD,   0.3 – 7 keV
30 arcsec HPD,  7.0 – 40 keV
Cosmic feedback,
Black Hole Evolution
Strong Gravity
XMS
WFI/HXI
WFI/HXI
Count Rate 106 cps with < 10% deadtime Neutron Star
Equation of State
HTRS
Polarimetry 1% MDP, 100 ksec, 5×10-12
cgs (2–6 keV)
Strong Gravity XPOL

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Effective Area Plot

Plot of the effective area of the IXO mirror and focal plane instruments compared to those of current X-ray observatories, showing the large improvement at all energies. Click the image for a larger view.

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Resolution

Plot of the spectral resolution of the IXO calorimeter and grating (lower limit) compared to current X-ray observatories. The bottom panel shows the emission lines of the various elements in the energy range 0.1-3.0 keV (color) and their sum (black). Click the image for a larger view.


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