Magnetar spin-down glitch clearing the way for FRB-like bursts and a pulsed radio episode

Magnetars are a special subset of the isolated neutron star family, with X-ray and radio emission mainly powered by decay their immense magnetic fields. Many attributes magnetars remain poorly understood: spin-down glitches or sudden reductions in star’s angular momentum, bursts reminiscent extragalactic fast (FRBs) transient pulsed lasting months to years. Here we unveil detection large glitch event (fractional change spin frequency $$| {{\Delta }}\nu /\nu | =5.{8}_{-1.6}^{+2.6}\times 1{0}^{-6}$$ ) from magnetar SGR 1935+2154 on 5 October 2020 (±1 day). We find no source-persistent surface thermal magnetospheric behaviour, nor is there evidence strong bursting activity. Yet, subsequent days, emitted three FRB-like followed month-long episode emission. Given rarity signals magnetars, approximate synchronicity suggests an association, providing pivotal clues origin triggering mechanisms ramifications broader FRB populations. postulate that impulsive crustal plasma shedding close pole generates wind combs out field lines, rapidly reducing momentum while temporarily altering geometry permit pair creation needed precipitate An abrupt slow-down magnetar’s rotation rate (a ‘glitch’) may be related (resembling bursts)