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Pulse Profiles of Accreting Neutron Stars from GRMHD Simulations
Pushpita Das, Tuomo Salmi, Jordy Davelaar +2
The pulsed X-ray emission from the neutron star surface acts as a window to study the state of matter in the neutron star interior. For accreting millisecond pulsars, the surface X…
Bulk Motions in the Black Hole Jet Sheath as a Candidate for the Comptonizing Corona
Navin Sridhar, Bart Ripperda, Lorenzo Sironi +2
Using two-dimensional general relativistic resistive magnetohydrodynamic simulations, we investigate the properties of the sheath separating the black hole jet from the surrounding…
Machine- and deep-learning-driven angular momentum inference from BHEX observations of the photon ring
Joseph R. Farah, Jordy Davelaar, Daniel Palumbo +2
The photon ring is an important probe of black hole (BH) properties and will be resolved by the Black Hole Explorer (BHEX) for the first time. However, extraction of black ho…
First Very Long Baseline Interferometry Detections at 870μm
Alexander W. Raymond, Sheperd S. Doeleman, Keiichi Asada +276
The first very long baseline interferometry (VLBI) detections at 870m wavelength (345GHz frequency) are reported, achieving the highest diffraction-limited angular resolutio…
Machine-Learning Characterization of Intermittency in Relativistic Pair Plasma Turbulence: Single and Double Sheet Structures
Trung Ha, Joonas Nättilä, Jordy Davelaar +1
The physics of turbulence in magnetized plasmas remains an unresolved problem. The most poorly understood aspect is intermittency -- spatio-temporal fluctuations superimposed on th…
Self-lensing flares from black hole binaries IV: the number of detectable shadows
Kevin Park, Chengcheng Xin, Jordy Davelaar +1
Sub-parsec supermassive black hole (SMBH) binaries are expected to be common in active galactic nuclei (AGN), as a result of the hierarchical build-up of galaxies via mergers. Whil…