NASA’s Hubble Space Telescope reached a remarkable milestone—its 100,000th exposure, capturing an image of a quasar located 9 ...

Ancient quasars seen by the James Webb Space Telescope technically shouldn’t exist, but one rare type of dark matter could make sense of that. Ultra-self-interacting dark matter clumped into ...

"We would like to understand the difference between these systems, which holds the clue to understand just how many cosmic rays are produced in the jets of microquasars." ...

Quasars with low-energy X-ray emission, and thus a lower temperature in the corona, show faster winds. This indicates a highly rapid growth phase that exceeds a physical limit for the accretion of ...

Quasars are active galactic nuclei that are powered by supermassive black holes, which are millions to billions of times the mass of our Sun. The supermassive black hole consumes large quantities of ...

By analyzing multiwavelength data from various space telescopes and astronomical surveys, Chinese astronomers have explored ...

Abstract: Quasars in the Age of Time-Domain Astronomy: Black hole feeding, visible as quasars, is a critical ingredient in many fields from galaxy evolution to multi-messenger gravitational wave ...