Tools for Radio/Multi-Wavelength Big Data Interrogation

In this chapter, we aim to provide an overview of some of the most commonly used software and tools exploited by astronomers to visualise and interrogate radio data. Sometimes these tools are shared across the field of astronomy and shared through multiple types of analysis. In this case, we try to provide examples drawn from multi-wavelength astronomy. In the last part of this chapter, we focus our attention on describing novel software/tools that have been developed in recent years and that will possibly represent the new paradigm for (radio) data visualisation in astronomy. These tools are designed with the precise aim to solve new problems posed by, e.g. the SKA precursors and, eventually, the SKA telescope, such as the need to efficiently visualise multi-parameters data of very big size (e.g. terabyte scale) and possibly stored in a shared cloud where multiple users are working at the same time.