Luis C. Ho

The James Webb Space Telescope discovered a population of 'little red dots' (LRDs) — compact objects with disproportionately massive black holes that almost disappear at z<3. A study of 98 such sources showed that at z>4 they reside in sparse regions, but by z~3.5 their environment and dark halo mas

Scientists spectroscopically studied 14 'little red dots' (LRD) — compact objects at high redshifts. They decomposed the hydrogen Balmer series lines and found that the anomalously high Balmer decrement values are not due to dust absorption, but to extreme gas density (above 10⁹ cm⁻³). This led to a

In the young universe, telescopes found many reddish dots. A new explanation: these are huge black holes that we see from the side. The gas disk around them blocks the most energetic radiation, allowing only dim red light and hydrogen glow. A similar object exists right in the Milky Way. If viewed f