Relativistic corrections to astrometric shifts due to gravitational microlensing

Abstract

Gravitational microlensing has proved to be a versatile astrophysical tool. Recently, the question of whether higher order relativistic corrections can influence the observable properties of microlensing has been addressed. This letter extends earlier studies, investigating higher order relativistic terms in astrometric shifts during microlensing events, revealing that they produce no effects. The magnitude of the relativistic corrections is examined in an astrophysical context and is found to be negligible.

4 pages (PTPTeX); accepted for publication in Prog. Theor. Phys

References in corpus (5)

• Detecting Stellar Spots by Gravitational Microlensing
• Limits on Stellar and Planetary Companions in Microlensing Event OGLE-1998-BUL-14
• Direct Detection of Giant Close-In Planets Around the Source Stars of Caustic-Crossing Microlensing Events
• Detection of Stellar Spots from the Observations of Caustic-Crossing Binary-Lens Gravitational Microlensing Events
• Probing the Atmospheres of Planets Orbiting Microlensed Stars via Polarization Variability

Cited by in corpus (8)

• Gravitational Lensing by Black Holes
• Formalism for Testing Theories of Gravity Using Lensing by Compact Objects. I: Static, Spherically Symmetric Case
• Formalism for testing theories of gravity using lensing by compact objects. II: Probing Post-Post-Newtonian metrics
• Weak field limit of Reissner-Nordstrom black hole lensing
• On Relativistic Corrections to Microlensing Effects: Applications to the Galactic Black Hole
• Observing gravitational lensing effects by Sgr A* with GRAVITY
• Microlensed image centroid motions by an exotic lens object with negative convergence or negative mass
• Gravitational lensing by exotic objects