FRB 20201124A intrigued astronomers and astrophysicists around the world due to its unusual characteristics and very different from other fast radio bursts. For this reason, scientists are looking for what motivated such emissions, as well as an explanation for the galaxy in which it was emitted – very different from the usual star-forming galaxies. See below for more information on the most unusual fast radio burst ever catalogued.
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Fast radio burst (FRB) is the name given to the astrophysical phenomenon characterized by a pulse of transient radio that lasts a few milliseconds and involves high energy release, equivalent to the annual energy production solar. This phenomenon is common, and scientists suspect that they are produced by magnetars - that is, a neutron star with an extreme magnetic field.
However, the fast radio burst cataloged as FRB 20201124A caught the attention of scientists due to its differences in relation to the others. Check out!
The FRB in question, observed in 2021 and occurring in a giant galaxy, had irregular and short-directed variation as the magnetic field strength increased around the event. Thus, in the first 36 days, they waxed and waned, while they stopped suddenly in the last 18 days. Another outstanding feature is that the density of particles in the vicinity of the FRB source was much higher than expected.
Astrophysicist Zhang claims that this is not a phenomenon calculated for a single magnetar. For this reason, it may not be the target responsible for the FRBs in question. The hypothesis is that there is something else nearby that would be the source of the phenomenon. The galaxy where it occurred is also not what astronomers expected. Usually, magnetars are located in star-forming galaxies, but this is not the case. On the contrary: the event took place in a region with very little star formation.
There are still many mysteries surrounding this phenomenon. The optical image of the galaxy that hosted the event shows that it has similarities with the Milky Way. To better understand what happened, it is necessary to evaluate the wavelengths emitted during the fast radio burst, as this is the only way we will know what happened in this atypical emission.
