Pulsar timing: how the best clocks in the sky probe fundamental physics
30-7-018 - Kjell Johnsen Auditorium (CERN)
30-7-018 - Kjell Johnsen Auditorium
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Pulsars are neutron stars rotating with very small and precise periods. They have anisotropic beams that, if detected, allow to time these rotations very accurately, thus providing a ‘clock’ in the sky. These ‘clocks’ work with errors comparable to those of our best atomic clocks. By analysing this signal, one can understand the motion of the pulsars and the properties of the medium between. In this talk I will describe how this provides information on fundamental physics, such as the emission of gravitational waves by the system, the presence of stochastic backgrounds of gravitational waves and properties of dark matter.