Astronomers Capture Rare Quasar Pair Colliding Just 1 Billion Years After Big Bang
The Daily Galaxy • • science
Key Points:
- Astronomers have confirmed a rare merging quasar pair, J2037–4537, existing just 1 billion years after the Big Bang, providing new insights into the formation and evolution of supermassive black holes in the early universe.
- Located at a redshift of z = 5.7, the system exhibits two actively feeding supermassive black holes within galaxies undergoing intense star formation, each producing stars at rates exceeding 500 solar masses per year.
- High-resolution ALMA observations revealed a tidal bridge of gas connecting the two quasars, conclusively proving they are distinct merging galaxies rather than gravitational lensing duplicates.
- The supermassive black holes are separated by thousands of light-years and are predicted to merge in about 2.1 billion years, a process that could contribute to the low-frequency gravitational waves detected by Pulsar Timing Arrays.
- This discovery enhances understanding of early cosmic structure formation and highlights the role of galaxy mergers in triggering quasar activity, with implications for interpreting gravitational wave backgrounds and the growth of massive black holes.
