Speaker
Description
The emission mechanism of radio pulsars is a long-standing and important open question in astrophysics. Although average pulse profiles can reveal global properties of pulsar magnetospheres, a successful theory emission mechanism must be able to explain the wide variety of phenomena seen at the single pulse level. We have leveraged the recent developments in the MWA-VCS software pipeline to observe PSR B0031-07 at a time resolution of ~50 us ($\nu\sim155\,$MHz, BW $= 30.72\,$MHz). This pulsar exhibits a range of interesting, well-studied single-pulse phenomena, including nulling, subpulse drifting, multiple drift modes, and (occasionally) "giant" pulses. In this talk, we showcase a variety of previously unobserved single-pulse phenomena, including frequency-dependent polarisation that may be the result of the coherent superposition of two orthogonal polarisation modes. Insofar as they can be shown to be truly intrinsic to the source, such observations can offer unprecendented insights into the pulsar emission mechanism.
| Suggested presentation duration (minutes) | 10 |
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