Dramatic images were captured by NASA’s Hubble Space Telescope of a set of wispy, flickering, green objects near dead quasars.
According to NASA, the images that were taken by Hubble show that the glowing structures have looping, spherical, and braided shapes. Astronomers believe that the discovery will be able to shed more light on the baffling conduct of galaxies with animated cores.
Astronomers believe that these phantom wispy configurations outside the host galaxy may have been illumined by potent ultraviolet radiation from a mega colossal black hole at the epicenter of the host galaxy. Most active of these galaxy cores are called quasars, which luster substance heated to a point that emits a bright ray into deep space.
Researcher Bill Keel, from the University of Alabama, study lead author, said, “The quasars however, are not bright enough at present to justify for what we’re seeing, this is a record of something that happened in the past. The glowing filaments are telling us that the quasars were once emitting more energy, or they are changing very rapidly, which they were not supposed to do.”
According to the astronomers, the quasars may be co-orbiting black holes, which could alter the quasar’s brightness, acting like a cosmic dimmer switch, as they circle each other. Also, a process known as photoionization, cause the once-invisible filaments in deep space to glow green. In the process, oxygen atoms in the filaments absorb energy from the quasar and slowly re-emit it as light for many thousands of years. Hydrogen, sulfur, helium, nitrogen, and neon are elements present in the filaments.
The astronomers also concluded that the green strands are tails of gas fragmented under gravitational forces when two galaxies fused, and are tens of thousands of years old. They slowly orbit their host galaxy, long after the merger was completed.