Science, Space and Technology News 2023
A newly observed high-energy FRB from a distant galaxy challenges existing models and relationships, offering fresh insights into the vast cosmos.
An unusually high-energy fast radio burst from a high-redshift galaxy has offered new insights into the distant universe, challenging current models of FRB emission. The findings also help constrain key attributes of these astrophysical phenomena. FRBs are brief pulses of radio emission originating from distant extragalactic sources.
Although the astrophysical processes that cause FRBs aren’t fully understood, the signals they produce can be used to infer information about the cosmic environments they pass through as they travel across the universe, including the nature of their galaxies of origin and the distribution ofThis artist’s impression illustrates the path of the fast radio burst FRB 20220610A, from the distant galaxy where it originated all the way to Earth, in one of the Milky Way’s spiral arms.
This discrepancy indicates passage through additional turbulent magnetized plasma in either the interstellar medium of the host galaxy or the foreground intergalactic medium. Moreover, the research team shows that the FRB was unusually energetic, exceeding predictions by previous FRB population models by a factor of 3.5, challenging models of the FRB emission mechanism and demonstrating the existence of a population of high-energy high-redshift FRBs.
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