The Zeeman effect and optical pumping are two mechanisms capable of inducing polarization signals in the spectral lines that originate in the outer layers of stellar atmospheres. The Zeeman effect 12 ...

Astronomers have now observed the radio emission from the neutral hydrogen gas (HI) in a nearby galaxy. Hydrogen gas emits radio emission in a spectral line at a very specific frequency of 1420 MHz.

An international team of astronomers has conducted optical and near-infrared observations of a supernova designated SN 2022ngb. As a result, it was found that SN 2022ngb is a faint and slow-evolving ...