Report summary

The 2021-2023 picture for Northwestern University Department of Physics and Astronomy is a 28-PI network with 3 internal PI collaborations. The research center of gravity is Physics and Astronomy as the leading field (55% of slots across 24 PIs; 24 labels), Atomic and Molecular Physics, and Optics as the leading subfield (23% of slots across 12 PIs; 12 labels), and Atomic and Subatomic Physics Research as the leading topic (5% of slots across 4 PIs; 4 labels). That is a thin collaboration pattern, useful for spotting individual pairs but less persuasive as a broad departmental network. The top weighted PIs are Giacomo Fragione (15.8 weighted works; Pulsars and Gravitational Waves Research, Gamma-ray bursts and supernovae); Selim M. Shahriar (15.6 weighted works; Photonic and Optical Devices, Advanced Optical Imaging Technologies). The strongest pairings are Giacomo Fragione and Frederic A. Rasio (10 shared works, weight 6.8). The standout breakdown groups are group 1 with 2 PIs, 1 internal connections, weight 6.8, around Astronomy and Astrophysics, led by Giacomo Fragione, Frederic A. Rasio.