Back to upper level Observatory, University of Helsinki ESA space science  X-ray Evolving Universe Spectroscopy Mission (XEUS). Observatory coordinates.

Esitys aiheesta: "Back to upper level Observatory, University of Helsinki ESA space science  X-ray Evolving Universe Spectroscopy Mission (XEUS). Observatory coordinates."— Esityksen transkriptio:

1 Back to upper level Observatory, University of Helsinki ESA space science  X-ray Evolving Universe Spectroscopy Mission (XEUS). Observatory coordinates instrument technology development in Finland for this future (launch 2014-15 ?) X-ray mission. Also participation in science planning. lämpömittari Nb TES (Ti/Au/Bi) 300  m Si 3 N 4 kerros (lämpöeristys) Piitä lämpötilassa T bath < T c I bias R shunt < 100 mK lämpökylpy absorbaattori röntgen- säteilyä SQUID Transition Edge Sensor (TES) Terminen kytkentä TES X-ray microcalorimeter scheme Change/evolution of plans: ESA-JAXA  NASA-ESA-JAXA (XEUS + Constellation-X) Sensitivity: ~10 -18 erg cm -2 s -1

2 Back to upper level Observatory, University of Helsinki ESA space science  Our share in XEUS (+ Constellation-X) plan NFI2 = TES microcalorimeter array 1.Collaboration with NL – Italy – UK -... 2.Finnish group: UH/Obs. + VTT (+Univ. of Jyväskylä ? + companies ?) 3.SQUID readout array for the instrument by VTT 4.Science utilisation lämpömittari Nb TES (Ti/Au/Bi) 300  m Si 3 N 4 kerros (lämpöeristys) Piitä lämpötilassa T bath < T c I bias R shunt < 100 mK lämpökylpy absorbaattori röntgen- säteilyä SQUID Transition Edge Sensor (TES) Terminen kytkentä TES X-ray microcalorimeter

3 Back to upper level  NFI2/TES-based micro-calorimeter specifications/features Field coverage: 32 arcsec Number of pixels: 32x32 Pixel size: 1 arcsec (= 240 micron) Energy range: 0.5 - 15 keV energy resolution (FWHM): 2 eV @ 1 keV, 5 eV @ 7 keV Detection efficiency: 95% for 1-7 keV Count rate limit: 250 c/s/pixel Effective time constant: 0.1 ms  TELESCOPE AND S/C FEATURES Telescope effective area: ~ 10 m2 @ 1 keV, ja ~ 3 m2 @ 7 keV Angular resolution: 2-5 arcsec (HEW). Also: XEUS orbital plan changed: L2-point instead of LEO

4 Back to upper level More specifically in XEUS context and plans More specifically in XEUS context and plans  Evolution of large-scale structure – probing dark matter and energy  Coeval growth of galaxies and their supermassive black holes  Gravity in the strong field limit  what else can be done ?