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Francesco D'Eugenio

4 articles · 30 co-authors · latest: 2026-06-04

Dusty Black Hole in a Young Galaxy

Astronomers using the spectroscope aboard JWST have, for the first time, measured the amount of dust around a distant black hole. Dust, like fog, dims its light, but the main surprise is that the black hole fluoresces, revealing the secrets of its rapid growth.
arXiv:2507.20684 · 2025-07-28

The Mystery of Cosmic Dust: Weighing a Galaxy

Astronomers refined the mass of three extremely distant galaxies using Webb, and it turned out: invisible dust can distort our estimates more than we imagined, but even with corrections, two galaxies remain monstrously massive for their young age.
arXiv:2601.08693v2 · 2026-01-13

Light from the Universe’s First Stars Captured

Near the galaxy GN-z11, seen just 400 million years after the Big Bang, the James Webb Space Telescope spotted a bright spot. It glows with hot helium — such radiation can only come from very massive stars devoid of heavy elements, that is, the first generation. If confirmed, we are seeing for the f
arXiv:2603.20362 · 2026-03-20

Roots of the Cosmic Banyan: How Black Holes Feed

New data from the JWST telescope on galaxy NGC 4696 in the Centaurus cluster have for the first time traced the kinematic connection between large-scale filaments and a compact circumnuclear disk with a radius of about 120 parsecs. The S-shaped structure, familiar from Hubble images, turned out to b
arXiv:2606.06620v1 · 2026-06-04