Tag: gas dynamics
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Supermassive Black Holes Exhibit Selective Feeding During Galaxy Mergers
Overview: A New Look at Black Hole Diets For decades, astronomers have treated supermassive black holes (SMBHs) as cosmic vacuum cleaners, voraciously consuming gas, stars, and anything that crosses their event horizons. Yet recent observations with the Atacama Large Millimeter/submillimeter Array (ALMA) are challenging that image. In merging galaxies, SMBHs show selective feeding patterns that…
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James Webb Spots a Gassy Baby Galaxy Throwing a Tantrum in the Early Universe
Introduction: A newborn galaxy disrupts our picture of the early universe The James Webb Space Telescope (JWST) has captured a remarkable newborn galaxy in the distant past, offering new clues about how the earliest galaxies formed and grew. Researchers describe the object as a “gassy baby,” a note that hints at wild star-forming activity and…
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Mystery of NGC 6789: The Galaxy That Keeps Star-Birthing Without Fuel
Unraveling a cosmic anomaly In the vast expanse of space, some galaxies glow with activity, while others sleep. Yet a dwarf galaxy named NGC 6789, located about 12 million light-years away in the Local Void, has researchers baffled by its apparent ability to churn out new stars despite lacking the conventional fuel astronomers expect to…