When two massive, gas‑rich galaxies merge, gravity drives vast amounts of cold molecular gas toward the centers of both systems, where supermassive black holes (SMBHs) reside. These brief, turbulent phases can light up one or both black holes as active galactic nuclei (AGN), making them some of the most energetic objects in the universe. Yet, puzzlingly, not all merging galaxies host two actively feeding black holes; some show only one, while others seem to have no appetite.
An international group of astronomers has uncovered the clearest evidence yet that the powerful jets launched by newborn stars dependably record a star’s most violent growing pains, confirming a long‑standing model of how these jets plow through their surroundings.
Astronomers have used the Atacama Large Millimeter/submillimeter Array (ALMA) together with a suite of space- and ground-based telescopes, to study AT 2024wpp, the most luminous fast blue optical transient (LFBOT) ever observed.
Astronomers using the U.S. National Science Foundation Very Large Array have captured the first-ever radio signals from a rare class of stellar explosion known as a Type Ibn supernova.