Speaker
Jorge Terol Calvo
Description
Ultra-light axion-like particles (ALP) can be a viable solution to the dark matter problem. The ALP, coupled to the electromagnetic field, act as an active birefringent medium, altering the polarisation properties of light through which it propagates. In particular,oscillations of the axionic field induce monochromatic variations of the plane of linearly polarised radiation of astrophysical signals. In this talk we will expose the results of the search for evidence of ALP induced birefringence in the polarimetry measurements of pulsars collected and preprocessed for the Parkes Pulsar Timing Array (PPTA), QUIJOTE and the European Pulsar Timing Array (EPTA) campaigns.
