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gr-qc2019★ 38 cited
The Shapiro time delay and the equivalence principle
Markus Pössel
The gravitational time delay of light, also called the Shapiro time delay, is one of the four classical tests of Einstein's theory of general relativity. This article derives the N…
astro-ph.IM2019
A Beginner's Guide to Working with Astronomical Data
Markus Pössel
This elementary review covers the basics of working with astronomical data, notably with images, spectra and higher-level (catalog) data. The basic concepts and tools are presented…