Astronomers from Italy and Spain have detected a new blazar by analyzing data from two astronomical surveys. The newly found object, designated DESJ014132.4-542749.9, turns out to be an extremely X-ray-weak blazar at high redshift. The discovery is detailed in a paper published August 22 on arXiv.org.
Source:
https://phys.org/news/2019-09-extremely-x-ray-weak-blazar.html