Description
Radio pulsars are fascinating objects that keep delivering important insights into fundamental physics after more than a half century since their discovery. Precise pulsar timing experiments have provided the most stringent constraints on alternative theories of gravity and the equation of state (EoS) of dense matter inside neutron stars. However, the ability to constrain the EoS with binary pulsar timing measurements is limited by the degeneracy between pulsar mass and orbital inclination. The precision of pulsar timing is also highly affected by the systematics in the timing residuals (caused by e.g. propagation through the dynamic interstellar medium) and uncertainties on astrometric parameters of pulsars. In recent years, there have been drastic improvements in the technique of pulsar ``scintillometry'' that now offers new ways to overcome these limitations
In my talk I will give an overview of pulsar scintillometry technique that utilizes interstellar medium scattering screens as multi-parsec sized interferometers capable of capturing information about a pulsar’s motion in the plane of the sky and thus retrieve parameters unavailable by other methods. As an application of this technique, I will present my scintillometric study of the very unique triple system pulsar PSR J0337+1715, for which scintillometric measurements of pulsar parameters can be directly compared with those done by pulsar timing and VLBI parallax.
| Talk category | NOVA Network 3 |
|---|---|
| Preference for a talk or poster | Talk |
