Abstract
The temporal evolution of ducted waves in coronal loops (represented by smoothed slabs of enhanced gas density embedded within a uniform magnetic field) is studied in the framework of cold magnetohydrodynamics by means of numerical simulations. The numerical results show that there is an energy leakage from the slab, associated with the propagation of wave packets which exhibit periodic, quasi-periodic and decay phases. Even for weak slabs the nonlinearity can play a significant role, leading to wave breaking and shifted time signatures in comparison to the corresponding signatures of linear waves. The quasi-periodic phase possesses the strongest amplitudes in an event, making this phase the most significant for observations.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
