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Precession of magnetars: dynamical evolutions and modulations on polarized electromagnetic waves
Yong Gao, Lijing Shao, Gregory Desvignes +3
Magnetars are conjectured to be highly magnetized neutron stars (NSs). Strong internal magnetic field and elasticity in the crust may deform the stars and lead to free precession.…
The SPAN512 mid-latitude pulsar survey at the Nançay Radio Telescope
Gregory Desvignes, Ismael Cognard, David A. Smith +6
The large number of ongoing surveys for pulsars and transients at various radio observatories is motivated by the science obtained from these sources. Timing and polarisation analy…
Resolving the inner parsec of the blazar J1924-2914 with the Event Horizon Telescope
Sara Issaoun, Maciek Wielgus, Svetlana Jorstad +27
The blazar J1924-2914 is a primary Event Horizon Telescope (EHT) calibrator for the Galactic Center's black hole Sagittarius A*. Here we present the first total and linearly polari…
Millimeter light curves of Sagittarius A* observed during the 2017 Event Horizon Telescope campaign
Maciek Wielgus, Nicola Marchili, Ivan Marti-Vidal +28
The Event Horizon Telescope (EHT) observed the compact radio source, Sagittarius A* (Sgr A*), in the Galactic Center on 2017 April 5-11 in the 1.3 millimeter wavelength band. At th…
One pulsar, two white dwarfs, and a planet confirming the strong equivalence principle
Guillaume Voisin, G Luth, I Cognard +7
The strong equivalence principle is a cornerstone of general relativity, tested with exquisite accuracy in the Solar system. However, tests in the strong-field regime require a com…
Long term radio and X-ray evolution of the magnetar Swift J1818.0-1607
K. M. Rajwade, B. W. Stappers, A. G. Lyne +10
We report on the the long term monitoring campaign of the seemingly youngest magnetar Swift~J1818.0-1607 at radio and X-ray wavelengths over a span of one year. We obtained a coher…