The BlackGEM array will search in visible light for mergers of black holes and neutron stars.
The BlackGEM array, consisting of three new telescopes at the European Southern Observatory’s La Silla Observatory in Chile, has begun operations. This photograph shows the three open domes of the BlackGEM telescopes, with three other telescopes at La Silla visible in the background.A new telescope array has begun to hunt for the most violent and cataclysmic events in the cosmos, clashes so powerful that they cause the very fabric of space and time to"ring.
The BlackGEM array, consisting of three new telescopes located at the European Southern Observatory's La Silla Observatory in Chile, will search in visible light for events like neutron star collisions and black hole mergers, which launch ripples in space-time called"With BlackGEM, we aim to scale up the study of cosmic events with both gravitational waves and visible light," BlackGEM Principal Investigator Paul Groot, of Radboud University in the Netherlands,.
Thus far, only one explosive event has been detected in both gravitational waves and visible light, the collision between twowith masses between eight and 20 times that of the sun, which occurred 130 million years ago. By detecting both the gravitational waves and visible light generated by such events, scientists can not only hone in on their precise locations but can also learn more about their nature. For example, astronomers could confirm that collisions between neutron stars, also known as kilonovas, do indeedFollowing up ripples in space-time predicted by Einstein
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