Preface to Topical Issue: Waves in the Solar Corona: From Microphysics to Macrophysics
Wave and oscillatory processes in the plasma of the solar corona attract growing attention in the context of key challenges in solar physics. For several decades, waves have been considered as one of the mechanisms for coronal plasma heating (e.g. De Moortel and Browning, 2015) and solar wind acceleration (e.g. Cranmer, 2012) Coronal waves are intensely used for plasma diagnostics, from radio emission to large scale magnetohydrodynamic (MHD) timescales (see, e.g. Nakariakov, Kashapova, and Yan, 2014; Liu and Ofman, 2014) The waves are natural agents that can establish the connectivity of different layers of the solar atmosphere (Komm et al. 2015) Interesting perspectives have recently been identified for the deep exploitation of the coronal magnetospheric analogy (Nakariakov et al. 2016) This shows that the study of solar coronal waves and oscillations is an active and rapidly developing research topic. This Topical Issue addresses the recent achievements in the field, and contains two invited review papers and eighteen original papers, covering new interesting observational and theoretical results. The invited review of Van Doorsselaere, Kupriyanova, and Yuan (2016) discusses the recent progress in the observational detection and modelling of quasi periodic pulsations