2 papers
astro-ph.CO2026
Frequency shift and viewing direction variations in gravitational lensing
Mikołaj Korzyński, Mateusz Kulejewski
In a gravitational lensing system, the relative transverse velocities of the lens, source, and observer induce a frequency shift in the observed radiation. While this shift is typi…
astro-ph.CO2025
Position drift with Gaia
Andreas Tsigkas Kouvelis, Asta Heinesen, Shashank Shalgar +1
The proper motion (also known as position drift) field of extragalactic sources at cosmological distances across our sky can be used to measure the acceleration of the Solar System…