Conveners
Pulsars and Pulsar Wind Nebulae
- Brian van Soelen
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Dr Michael Sarkis (Stellenbosch University)18/09/2025, 13:30Multi-Messenger Astrophysics and Astro-Particle PhysicsContributed Talk
The timing residuals of pulsar emissions have been used before to search for a stochastic Gravitational Wave Background (GWB), with several PTA collaborations recently reporting strong evidence for the Hellings and Downs correlation curve that would be characteristic of a GWB signal. In a similar manner, we analyse the polarisation data of a large population of pulsars observed with MeerKAT...
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Christo Venter18/09/2025, 13:45Pulsar and Pulsar Wind NebulaeContributed Talk
The publication of the Third Pulsar Catalog (3PC) by the Fermi Large Area Telescope (LAT) team marked a significant milestone for high-energy pulsar science. In it, the light curves and spectra of nearly 300 pulsars are presented, along with some interesting correlations between timing and spectral parameters. This wealth of data provides impetus for continued development of pulsar emission...
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Ms Hend Hamed (North-West University)18/09/2025, 14:00Pulsar and Pulsar Wind NebulaeContributed Talk
Pulsars are rapidly rotating neutron stars that emit electromagnetic radiation over a broad energy band. The third pulsar catalogue (3PC) of the Fermi Large Area Telescope (LAT) contains more than 300 gamma-ray pulsars and pulsar candidates. However, phase-resolved spectroscopy has been performed on only a few of them, which was not sufficient to reveal new trends that could help constrain the...
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Dr Monica Barnard (Centre for Space Research, North-West University, Potchefstroom 2520, South Africa)18/09/2025, 14:15Pulsar and Pulsar Wind NebulaeContributed Talk
In an ongoing study we interpret the curved spectrum of the Vela pulsar as seen by H.E.S.S. II (up to ~100 GeV) and the Fermi Large Area Telescope to be the result of synchro-curvature radiation due to the acceleration of primary particles in a dissipative magnetosphere, within an extended separatrix region that leads into the current-sheet outside the light cylinder. We investigate the...
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Emil Meintjes (Univeristy of Cape Town)18/09/2025, 14:30Pulsar and Pulsar Wind NebulaeContributed Talk
White dwarf radio pulsars (WD pulsars) are a fascinating, newly established class of compact binary systems. To date, only three have been confirmed: AR Sco, J1912–4410 and J2306+2440. Like their neutron star counterparts, they exhibit radio pulsations driven by rapid rotation and intense magnetic fields. Since its discovery in 2016, AR Sco has spurred significant debate regarding the nature...
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Lurgasho Minnie (University of the Free State)18/09/2025, 14:45Pulsar and Pulsar Wind NebulaeContributed Talk
We report the possible detection of pulsed 𝛾-ray emission from one confirmed white dwarf
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pulsar J191213.72-441045.1 and a candidate white dwarf pulsar EUVE J0317-85.5 using ∼15
years of data from the Fermi-LAT observatory. Pulsed 𝛾-ray emission in the 0.5-10 GeV energy
range from J191213.72-441045.1 were found at a period of 𝑃=319.99±0.35s with a -log(Pr)=6.76 which corresponds to a...