The high red-shifting red quasar adds new members.

Astronomers have recently discovered two high red-shifting red quasars using the Subaru telescope. A quasar is an extremely bright active galactic nucleus with a supermassive black hole with an accretion disk at its center. Some quasars are called red quasars because their smokey dust absorbs blue light and appears to darken.

The high red-shifting red quasar adds new members.

Astronomers are keen to look for high-red-shifting quasars (redshifts above 5.0) because they are one of the brightest and most distant dense objects in the observable universe. The spectrum of high-redshift quasars can be used to estimate the mass of supermassive black holes and is a powerful tool for detecting the early universe.

Due to the lack of large samples of high redshift quasars, and the light emitted by high-red-shifting quasars at a more blurred wavelength in ultraviolet light, scientists have so far not found red-shifting red quasars exceeding 5.0.

The researchers analyzed the data and identified four candidate red quasars out of 93 high redshift quasars, including HSC J120505.09-000027.9 and Redshift 5.83 HSC J023858.09-031845.4.

The findings, published in the preprinted website arXiv.org, say it will help improve understanding of these rare objects.