Скачать или смотреть Przemek Mroz | Observations of microlensing events with dual-field interferometry

Interferometric observations of gravitational microlensing events offer an opportunity for precise, efficient, and direct mass and distance measurements of lensing objects, especially those of isolated neutron stars and black holes. However, such observations were previously possible for only a handful of extremely bright events. The recent development of a dual-field interferometer, GRAVITY Wide, has made it possible to reach out to significantly fainter objects, and increase the pool of microlensing events amenable to interferometric observations by two orders of magnitude.

In this talk, I will describe our efforts to use this new instrument to study microlensing events. In particular, I will present the first successful resolution of microlensed images with this new observing mode, and discuss the future prospects of using dual-field interferometric observations for the follow-up of microlensing events.