Tag Archive for 'Dual quasar'

An artist’s impression of HSC J121503.42-014858.7 and HSC J121503.55-014859.3 quasars. Image credit: Izumi et al., doi: 10.3847/1538-4357/ad57c6.

Astronomers Discover Spectacular Galactic Merger in Early Universe

Sep 2, 2024 by News Staff

Using the Atacama Large Millimeter/submillimeter Array (ALMA) and the Subaru Telescope, astronomers have discovered a pair of merging gas-rich galaxies...

This artist’s concept shows the brilliant glare of two quasars residing in the cores of two galaxies that are in the chaotic process of merging. Image credit: NASA / ESA / Joseph Olmsted, STScI.

Merger of Two Massive Disk Galaxies Produces Dual Quasar

Apr 5, 2023 by News Staff

Using the NASA/ESA Hubble Space Telescope and other space and ground-based observatories, astronomers have discovered SDSS J0749+2255, a closely bound...

SDSS J141637.44+003352.2, a dual quasar at a distance for which the light reaching us was emitted 4.6 billion years ago. The two quasars are 13,000 light-years apart on the sky, placing them near the center of a single massive galaxy that appears to be part of a group, as shown by the neighboring galaxies in the left panel. In the lower panels, optical spectroscopy has revealed broad emission lines associated with each of the two quasars, indicating that the gas is moving at thousands of kilometers per second in the vicinity of two distinct supermassive black holes. The two quasars are different colors, due to different amounts of dust in front of them. Image credit: Silverman et al, doi: 10.3847/1538-4357/aba4a3.

Astronomers Find Three Luminous Dual Quasars

Aug 27, 2020 by News Staff

Using the Subaru Telescope and W. M. Keck and Gemini observatories, astronomers have spotted three dual quasars — merging galaxy systems that have...