Using Pulsars to Map the Milky Way's Black Hole

The BlackHoleCam initiative has tested general relativity by observing pulsars orbiting Sagittarius A*, the supermassive black hole at the center of the Milky Way. The initiative aims to use the largest and most sensitive telescopes in the world, including the Atacama Large Millimeter/submillimeter Array (ALMA), to spot binary pulsars orbiting the black hole. This will be done using very long baseline interferometry (VLBI), which consists of multiple radio telescopes working together and combining data to create higher-resolution images. The unparalleled sensitivity these arrays offer could test the laws of physics under the most extreme conditions, providing new insight into the laws governing the universe.