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DTSTART;TZID=Europe/Rome:20200204T114500
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DTSTAMP:20260507T163758
CREATED:20190926T124553Z
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UID:6853-1580816700-1580820300@www.oa-roma.inaf.it
SUMMARY:The X-ray universe at microarsec resolution: the power and promise of X-ray interferometry
DESCRIPTION:The spectacular image of a supermassive black hole `shadow’ taken by the Event Horizon Telescope last year highlights the potential of being able to resolve microarcsecond scale structures in astrophysical sources.  Given the ~Angstrom scale of X-ray wavelengths\, similar resolutions are theoretically possible with only a 1 m diameter telescope\, which could be accommodated on a single spacecraft. Conventional X-ray imaging capability remains far from from this goal however.\nIn this talk I will explore the possibility\, recently proposed to ESA’s Voyage 2050 program\, of developing X-ray interferometry to break the resolution barrier in the X-rays\, starting from X-ray fringes which have already been observed in the lab and examining what would be required for an X-ray interferometric space observatory\, from the possibilities with single spacecraft to formation flyers which could push to sub-microarcsecond resolution. Such revolutionary observatories would enable detailed imaging-spectroscopy of stellar coronae and transiting exoplanets within ~100 pc\, direct observation of X-ray binary orbits\, supermassive black hole accretion flows and event horizons\, and imaging of luminous transients and binary supermassive black holes across the observable universe.
URL:https://www.oa-roma.inaf.it/event/colloquium-phil-uttley/
LOCATION:OAR Monte Porzio Catone – aula Gratton\, Via Frascati 33\, Roma\, RM\, 00136\, Italia
CATEGORIES:Seminari
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