The students will be challenged to look for answers to this question by analyzing data of the Pierre Auger Observatory. The measurement includes:
- Visualization of events using an interactive display of the observatory
- Separation of surface-detector stations with signal from those with background
- Visual reconstruction of the arrival direction of the primary cosmic ray
- Fitting the data to determine the energy of the primary cosmic ray
- Application of criteria to select events which point to the source
- Interpretation of sky maps in different coordinate systems
