Filling the radio transients gap (or: The case for a dedicated radio transients monitoring array in the southern hemisphere)
(2024)
A MeerKAT view of the double pulsar eclipses
Astronomy & Astrophysics EDP Sciences 682 (2024) a26
Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433
Science American Association for the Advancement of Science 383:6681 (2024) 402-406
Abstract:
SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma-ray emission from the parsec-scale jets. These observations trace the energetic electron population and indicate that inverse Compton scattering is the emission mechanism of the gamma rays. Our modeling of the energy-dependent gamma-ray morphology constrains the location of particle acceleration and requires an abrupt deceleration of the jet flow. We infer the presence of shocks on either side of the binary system, at distances of 25 to 30 parsecs, and that self-collimation of the precessing jets forms the shocks, which then efficiently accelerate electrons.Optical spectroscopy of blazars for the Cherenkov Telescope Array -- III
(2024)
X-Ray Polarized View of the Accretion Geometry in the X-Ray Binary Circinus X-1
The Astrophysical Journal Letters American Astronomical Society 961:1 (2024) l8