Using the Chandra X-ray Observatory, the United States Aeronautics and Space Administration (NASA) has discovered two giant black holes in a dwarf galaxy preparing to collide.
NASA emphasizes that this collision can provide scientists with important information about the development of black holes in the early universe.
Two giant black holes in a dwarf galaxy are about to collide.
Two giant black holes in a dwarf galaxy are about to collide. (Source: NASA)
By definition, dwarf galaxies contain stars whose total mass is about 3 billion times less than that of the Sun.
Astronomers have long hypothesized that dwarf galaxies merged relatively early, particularly in the early universe, to give rise to the larger galaxies we see today.
However, current technology cannot observe early dwarf galaxy mergers because images taken from long distances are very faint.
The new study took a different approach, conducting a systematic study of Chandra’s deep X-ray observations and comparing them with data from NASA’s Wide-Range Infrared Survey Probe satellite and optical data from the Canada Telescope -France-Hawaii.
American astronomers searched for pairs of bright X-ray sources in colliding dwarf galaxies for evidence of two black holes and discovered two examples, one in Galaxy cluster Abell 133 located 760 million light years from Earth and one located galaxy cluster Abell 1758Sabout 3.2 billion light years away from us.
According to NASA, the two pairs exhibit structures characteristic of galactic collisions, which should help to deepen our knowledge of the growth of black holes.
Article source: VNA/Vietnam+
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Using the Chandra X-ray Observatory, the United States Aeronautics and Space Administration (NASA) has discovered two giant black holes in a dwarf galaxy preparing to collide.
