Saiyang Zhang

2 articles · 5 co-authors · latest: 2026-04-21
27 citations · h-index 2 · 4 papersData: Semantic Scholar

We have retold 2 papers by this author. most often about: primordial black hole, quasar, star formation. 5 co-authors across our retellings.

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Galaxies2025-12-161 minarXiv:2512.14066express
The 'Chef' Black Hole That Prevents Star Birth
The James Webb Space Telescope spotted galaxy Abell 2744-QSO1, which has almost no heavy elements (astronomers call them metals), and its central black hole weighs hundreds of times more than all its stars combined. Standard scenarios can't explain this imbalance.
Galaxies2026-04-212 minarXiv:2604.19075express
Celestial Newborn: Stars of Pure Hydrogen
A bonfire built of pure alcohol burns hot and gives off almost no smoke. That's roughly how the first stars shone: they contained no heavy elements, only hydrogen and helium left over from the Big Bang. The James Webb Space Telescope may have caught one such "bonfire" in the galaxy GN-z11.