Whenever Einstein@Home finds a new neutron star, there is always one workunit in which that discovery "stands out" from the noise with the highest statistical significance. The volunteers whose computers processed that workunit receive framed discovery certificates, signed by myself and by the Principal Investigator of the experiment/collaboration that provided the data. Over the past decade, we have sent out more than a hundred of these, and we are now preparing a new batch. If you are interested, here is
