https://www.sciencealert.com/analys...-storm-hints-at-a-link-with-fast-radio-bursts Analysis of a Strange Erupting Magnetar Hints Link With Mysterious Fast Radio Bursts MICHELLE STARR 23 AUG 2019 A magnetar that recently erupted with a storm of activity may have given us a lead on the mystery of fast radio bursts (FRBs). According to a new analysis of the magnetar XTE J1810-197, millisecond bursts of low-frequency radio waves sputtered out by the dead star show an unusual similarity to FRB signals. It's far from conclusive proof that the two phenomena are linked, but it's one of the most tantalising hints yet. more at link........ the paper: https://arxiv.org/pdf/1908.04304.pdf Distinct properties of the radio burst emission from the magnetar XTE J1810−197 ABSTRACT: XTE J1810−197 was the first ever magnetar which was found to emit transient radio emission. It has recently undergone another radio and high-energy outburst. This is only the second radio outburst that has been observed from this source. We observed J1810−197 soon after its recent radio outburst at low radio frequencies using the Giant Metrewave Radio Telescope. We present the 650MHz flux density evolution of the source in the early phases of the outburst, and its radio spectrum down to frequencies as low as 300 MHz. The magnetar also exhibits radio emission in the form of strong, narrow bursts. We show that the bursts have a characteristic intrinsic width of the order of 0.5−0.7 ms, and discuss their properties in the context of giant pulses and giant micropulses from other pulsars. We also show that the bursts exhibit spectral structures which cannot be explained by interstellar propagation effects. These structures might indicate a phenomenological link with the repeating fast radio bursts which also show interesting, more detailed frequency structures. While the spectral structures are particularly noticeable in the early phases of the outburst, these seem to be less prominent as well as less frequent in the later phases, suggesting an evolution of the underlying cause of these spectral structures. ::::::::::::::::::::::::::::::::::::::::::::::::::::: My previous best possibility was the last gasp of a star/Supernova just before a BH formed. This does sound promising.
