Browsing Faculty of Natural and Agricultural Sciences by Subject "General relativity"
Now showing items 1-2 of 2
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The cosmological perturbed lightcone gauge
(MDPI, 2018)The lightcone gauge is a set of what are called the observational coordinates adapted to our past lightcone. We develop this gauge by producing a perturbed spacetime metric that describes the geometry of our past lightcone ... -
X-ray polarimetry with the Polarization Spectroscopic Telescope Array (PolSTAR)
(Elsevier, 2016)This paper describes the Polarization Spectroscopic Telescope Array (PolSTAR), a mission proposed to NASA’s 2014 Small Explorer (SMEX) announcement of opportunity. PolSTAR measures the linear polarization of 3–50 keV ...