Author

H. Perets

2 papers indexed here

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Open access Aug 2026

Discovery of a star sensitive to the spin of Sagittarius A*

Residing in the centre of the Milky Way, Sagittarius A* (Sgr A*) is the closest massive black hole1 (MBH). Its vicinity has allowed measuring individual stellar orbits around it2, 3–4. The stars act as test particles and probe the gravitational potential around the 4.3 × 106M⊙ MBH. These observations have determined th...

K. A. El Dayem, R. Abuter, N. Aimar et al. · Nature · 1 citation

#machine learning Jun 2026

When to Align, When to Predict: A Phase Diagram for Multimodal Learning

A data-driven procedure is presented to locate real-world datasets in this diagram using a small labeled subsample, identifying the preferred objective and prediction direction before any cross-modal training, and identifying when no objective in the CA/CP family can improve on the stronger modality alone.

Ilay Kamai, Hugues Van Assel, Aviv Regev et al. · arXiv.org · 1 citation