Periodically repeating fast radio bursts: Lense-Thirring precession of a debris disk?

Recently, repeating fast radio bursts (FRBs) with a period of P-FRB = 16.35 +/- 0.18d from FRB 180916.J0158+65 were reported. It still remains controversial how such a periodicity might arise for this FRB. In this Letter, based on an assumption of a young pulsar surrounding by a debris disk, we attempt to diagnose whether Lense-Thirring precession of the disk on the emitter can produce the observed periodicity. Our calculations indicate that the Lense-Thirring effect of a tilted disk can result in a precession period of 16d for a mass inflow rate of 0.5-1.5 x 10(18) g s(-1), a pulsar spin period of 1-20 ms, and an extremely low viscous parameter alpha = 10(-8) in the disk. The disk mass and the magnetic field of the pulsar are also constrained to be similar to 10(-3) M-circle dot and <2.5 x 10(13) G. In our model, a new-born pulsar with normal magnetic field and millisecond period would successively experience the accretion and propeller phases, and is visible as a strong radio source in the current stage. The rotational energy of such a young neutron star can provide the observed radio bursting luminosity for 400 yr.