Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-08-25
2006SPIE.6266E..20E
Astronomy and Astrophysics
Astrophysics
Enhanced version of SPIE paper. 9 pages, 0 figures
Scientific paper
10.1117/12.672053
Some tests of fundamental physics - the equation of state at supra-nuclear densities, the metric in strong gravity, the effect of magnetic fields above the quantum critical value - can only be measured using compact astrophysical objects: neutron stars and black holes. The Extreme Physics Explorer is a modest sized (~500 kg) mission that would carry a high resolution (R ~300) X-ray spectrometer and a sensitive X-ray polarimeter, both with high time resolution (~5 ?s) capability, at the focus of a large area (~5 sq.m), low resolution (HPD~1 arcmin) X-ray mirror. This instrumentation would enable new classes of tests of fundamental physics using neutron stars and black holes as cosmic laboratories.
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