Fast Radio Bursts (FRBs) are the bright, apparently, extragalactic radio pulses, that in the year 2007 presented a tantalizing prospect to the astronomical community as a possible new window on the energetic extragalactic process. Recently a new repeating FRB name FRB 20200120E has been discovered.
FBRs are one of the most exhilarating novel mysteries of astrophysics. Characteristically, they are bright (50 mJy – 100 Jy) pulses of emission at radio frequencies, having a duration of milliseconds or less. Their origin is still a mystery unsolved, and presently the source class is only defined observationally. These coherent, short-duration radio pulses were believed to be emitted by expanding supernova shells combining surrounding materials in other galaxies and small annihilating black holes. The FRBs have stable but extreme magnetic fields associated with radio pulsars, which make them natural and long-lived particle accelerators that produce coherent radio emissions through an ununderstood process.
In the past, there have been shreds of evidence of some FRBs having more powerful signals from deep space, many million years away and several of them were emitting more energy than 500 million suns in the detectable radio wavelengths. Its briefness, less than that of a blink of an eye, concerning duration and non-repeatability, is what makes them extremely hard to anticipate, trace, and understood. In recent years, the biggest breakthrough in understanding the sources of emission of FRB was their detection from inside the Milky Way galaxy by a magnetar.
The newly discovered FRB 20200120E is believed to be from a galaxy 11.7 million light-years away, which is one of the closest known FRB, at least 40 times nearer the next-closest extragalactic signal. They are from the least expected globular cluster stars, which usually weren’t expected to emit fast radio bursts. This discovery advocates that the FRBs come from a wider range of environments than we previously expected. FRBs like one recently discovered 20200120E are less of their kind, as they can repeat, therefore astronomers can easily locate them in the sky. They can easily analyze the features of the signal to identify if the FRB has been traveling a short distance.
This lead to the discovery of a grand design spiral galaxy also known as M81, and thus the scientists believe these new FRBs could have a globular cluster origin, in a new preprint study. As they mention “Here we conclusively prove that FRB 20200120E is associated with a globular cluster in the M81 galactic system, thereby confirming that it is 40 times closer than any other known extragalactic FRB”
This discovery and its origin are set to shake things up in the concerning the conventional believes about the channels of FRBs
Fast Radio Bursts (FRBs), FRB 20200120E, astrophysics, pulsar, radioastronomy, Magnetar, neutron star, globular cluster