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First M87 Event Horizon Telescope Results and the Role of ALMA
Ciriaco Goddi, Geoff Crew, Violette Impellizzeri +41
In April 2019, the Event Horizon Telescope (EHT) collaboration revealed the first image of the candidate super-massive black hole (SMBH) at the centre of the giant elliptical galax…
On the beam properties of radio pulsars with interpulse emission
Simon Johnston, Michael Kramer
In the canonical picture of pulsars, radio emission arises from a narrow cone centered on the star's magnetic axis but many basic details remain unclear. We use high-quality polari…
Radio emission from a pulsar's magnetic pole revealed by general relativity
Gregory Desvignes, Michael Kramer, Kejia Lee +7
Binary pulsars are affected by general relativity (GR), causing the spin axes of each pulsar to precess. We present polarimetric radio observations of PSR J1906+0746 that demonstra…
On the usefulness of existing Solar-wind models for pulsar timing corrections
C. Tiburzi, J. P. W. Verbiest, G. M. Shaifullah +15
Dispersive delays due to the Solar wind introduce excess noise in high-precision pulsar timing experiments, and must be removed in order to achieve the accuracy needed to detect, e…
Simulations of imaging the event horizon of Sagittarius A* from space
Freek Roelofs, Heino Falcke, Christiaan Brinkerink +8
It has been proposed that Very Long Baseline Interferometry (VLBI) at sub-millimeter waves will allow us to image the shadow of the black hole in the center of our Milky Way, Sagit…
Relativistic spin precession in the binary PSR J11416545
V. Venkatraman Krishnan, M. Bailes, W. van Straten +5
PSR J11416545 is a precessing binary pulsar that has the rare potential to reveal the two-dimensional structure of a non-recycled pulsar emission cone. It has undergone $\sim 25…