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With the use of numerical models, we investigate whether Mean MotionResonances (MMR) with nearby moons to the J1407b ring system were the cause ofthe observed 0.0267AU wide gap located at 0.4AU. Only one location of a moon at0.63AU (corresponding to a 2:1 MMR) was found to form a gap at 0.4AU over shorttime periods of less than 100yr. However, the proximity of a low mass moon(0.08 Earth masses) caused significant scattering of the outer ring edge at0.6AU, along with the formation of an additional gap at the 3:2 MMR (0.485 AU),which is not consistent with observations. Further models with moons located atMMR 3:1, 4:1, 7:3 and 5:3 failed to form gaps at 0.4AU for time periods lessthan 100yr. Instead, gaps were formed in the ring at 3:2 and 2:1 MMR whichresulted in gaps at radial locations between 0.44-0.56AU. Additionally, gapsalso take longer than one orbital period of J1407b about the primary to form.Given that J1407b is on a highly eccentric orbit and is thought to stronglyperturb the ring at apocentre it appears unlikely that gaps form due to MMRwith nearby moons as opposed to embedded moons. Including an appropriate totalmass of the ring equal to Earth a dampening effect was witnessed on the gapformation process, causing an increase in the time required to open a gap dueto MMR. Therefore, we conclude the observed gap at 0.4 AU is unlikely to becaused by MMR with nearby moons.

Mean Motion Resonances With Nearby Moons: An Unlikely Origin For The Gaps Observed In The Ring Around The Exoplanet J1407b