Science, Space and Technology News 2024
In the center of these images is the quasar H1821+643, a rapidly growing supermassive black hole that astronomers have found is underachieving, despite producing intense radiation and a jet of particles seen in radio data from the Very Large Array. Credit: X-ray: NASA/CXC/Univ. of Nottingham/H. Russell et al.; Radio: NSF/NRAO/VLA; Image Processing: NASA/CXC/SAO/N. Wolk
H1821+643 is the closest quasar to Earth located in a galaxy cluster, at a distance of about 3.4 billion light-years.’s Chandra X-ray Observatory and the VLA, researchers found H1821+643 was less influential than many giant black holes in other clusters., which is not achieving what astronomers would expect from it. Data from NASA’s Chandra X-ray Observatory and radio data from the NSF’s Karl G.
The influence of quasars, however, is not as well known. This new study of H1821+643 that quasars — despite being so active — may be less important in driving the fate of their host galaxy and cluster than some scientists might expect.To reach this conclusion the team used Chandra to study the hot gas that H1821+643 and its host galaxy are shrouded in. The bright X-rays from the quasar, however, made it difficult to study the weaker X-rays from the hot gas.
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