Farthest Fast Radio Burst host galaxy spectrum

Astronomers using the NASA/ESA/CSA James Webb Space Telescope were able to study the host galaxy of the most distant known fast radio burst (FRB). By detecting light emitted from oxygen and nitrogen, they were able to determine the galaxy’s cosmological redshift, thereby confirming the FRB occurred just 3 billion years after the Big Bang.

[Image description: A graphic titled “Fast Radio Burst Host Galaxy; Most Distant Fast Radio Burst; NIRSpec Integral Field Spectroscopy.” A graph plots brightness of light versus wavelength. The y axis is labeled brightness with an up arrow labeled brighter and a down arrow labeled dimmer. The x axis is labeled “Wavelength of Light, microns” and goes from 1.0 to 5.0 with tickmarks every 0.5 microns. A jagged white line slopes downward from left to right between 1.0 and 2.5 microns, and is mostly flat beyond that. A prominent peak at 1.6 microns is labeled Oxygen with a transparent blue vertical band. Another peak at 2.1 microns is labeled Hydrogen with a transparent red vertical band. At upper right, a box contains text reading “Redshift = 2.148”.]