A starlike object seen on deep sky photographs coincides with an intense radio source and has a spectrum in which the characteristic Lyman pattern of hydrogen spectral lines has been shifted from the ultraviolet to the visible spectral range.What is this object?

Question

Quizplus · Accepted Answer

The coinciding of an intense radio source and a shifted Lyman pattern from the ultraviolet to the visible spectral range suggests that this object is a quasar. Quasars are believed to be the most luminous and distant objects in the universe, emitting high-energy radiation including radio waves, visible light, ultraviolet light, X-rays, and gamma rays. The observation of a shifted Lyman pattern indicates the presence of a massive black hole at the center of the quasar, which is likely emitting intense radiation as it consumes surrounding matter.

A Starlike Object Seen on Deep Sky Photographs Coincides with an Intense