| Description: | Scintillation is caused by interference of scattered paths through the interstellar medium (ISM). The resulting intensity variations contain holographic information on the scattering structures, which manifests in scintillation arcs. Historically, pulsar scintillation arcs have been discovered thirty years after the discovery of scintillating pulsars. Since then, their study has been transforming our understanding of the small-scale structure of the ionized ISM, leading to a model of filaments. I will present the results of an extensive monitoring campaign of the pulsar B1508+55 at Effelsberg and discuss various phenomena of scintillation and their interpretation. |
