[DSRP Evidence](https://dsrpevidence.org/)

# Rate of Caustic-crossing Microlensing Events in Stellar Binary Lenses with Significant Orbital Motion

Murlidhar et al., 2026, The Astrophysical Journal — Astronomy

Patterns: [Distinctions](https://dsrpevidence.org/pattern/distinctions), [Systems](https://dsrpevidence.org/pattern/systems)

## In short

A binary system's caustics are an emergent whole-system property that neither lens alone produces, and a caustic crossing is itself a sharp boundary event; what is large at the level of an individual system's parts washes out at the level of the aggregate whole population.

## What they found (results)

Modeling ~2,800 synthetic binary-lens microlensing events, the study finds orbital motion boosts the caustic-crossing cross section up to 4x for face-on circular orbits but decreases it for highly inclined orbits, while the population-averaged effect is a negligible ~0.1% increase.

These researchers were not testing DSRP. The finding is theirs; the correspondence to DSRP is drawn by this site.

[Source](https://doi.org/10.3847/1538-4357/ae8d0c)