BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:0 UID:UW-Physics-Event-1446 DTSTART:20090210T214500Z DURATION:PT1H0M0S DTSTAMP:20260420T041610Z LAST-MODIFIED:20090210T184538Z LOCATION:4274 Chamberlin Hall SUMMARY:Science with the International X-ray Observatory\, Astronomy C olloquium\, Randall Smith\, Harvard Smithsonian Center for Astrophysic s DESCRIPTION:In July 2008\, the International X-ray Observatory (IXO) w as announced to the astronomical community. IXO is a joint mission wi th participation from ESA\, NASA and JAXA\, superseding the US
\ nConstellation-X mission concept. IXO is dedicated to high resolution X-ray spectroscopy\, with 100 times the throughput for high resolution spectroscopy of previous X-ray missions. The baseline for IXO feature s a single large X-ray mirror and an extensible optical bench with a 20-25m focal length and moveable focal plane. The instruments include an X-ray wide field imaging spectrometer\, a high spectral resolution non-dispersive X-ray spectrometer\, an X-ray grating spectrometer\, a hard X-ray imaginer and an X-ray polarimeter. I will discuss the IXO s cience objectives and how it will help answer the following questions: How do super-massive Black Holes grow and evolve? Does matter orbitin g close to a Black Hole event horizon follow the predictions of Genera l Relativity? What is the Equation of State of matter in Neutron Stars ? How does Cosmic Feedback work and influence galaxy formation? How do es galaxy cluster evolution constrain the nature of Dark Matter and Da rk Energy? Where are the missing baryons in the nearby Universe? When and how were the elements created and dispersed? How do high energy pr ocesses affect planetary formation and habitability? How do magnetic f ields shape stellar exteriors and the surrounding environment? How are particles accelerated to extreme energies producing shocks\, jets\, a nd cosmic rays? URL:https://www.physics.wisc.edu/events/?id=1446 END:VEVENT END:VCALENDAR