"Determination of Zenith Angle Dependence of Incoherent Cosmic Ray Muon Flux Using Smartphones of the CREDO Project" - Karbowiak et al (2021)

January 28, 2021Alan Duffy

The latest CREDO paper is out, demonstrating that the signals we detect using your smartphone really are from cosmic rays. The way we can tell is that there is are many more cosmic rays hitting you (and your phone’s CCD!) from directly above relative to the horizon. This is a cosine squared dependency, and with some very clever modelling the team showed we could recover such a profile (as well as measuring the thickness of the CCD in the phones used in the study too which is neat!)