Astronomers have recently captured the best views of two super-massive black holes in the collision crash at the center of the galaxy fusion. The discovery can help scientists understand that super-massive black holes have become so great.
"Seeing the pairs of joining the galaxy nuclei associated with" huge "black holes so close was pretty unbelievable," said chief researcher Michael Koss from Eureka Scientific Inc. in Kirkland, Washington. "The images are quite powerful because they are ten times sharper than images from normal telescopes on the ground." It's like going from legally blind (20/200 visions) to perfect vision 20/20 when you put your eyeglasses. "In our research we see two nuclei of galaxies exactly when the pictures are taken, you can not argue with it, it's a very clear result that does not rely on the interpretation. "
The research results appeared on the Internet on November 7, 2018, issue of the journal Nature.
Koss and his team of researchers have made a discovery after having performed the largest systematic review of nearby galaxies using high resolution images captured using the Adaptive Optical System (AO) and near the Infrared Camera (NIRC2) WM Keck Observatory, along with more than 20 years of archival Hubble Space Telescope pictures. With data gathered from this comprehensive research, astronomers can determine the types of galaxies that are most likely to be close to the pair of super-massive black holes.
"This is the first major systematic survey of 500 galaxies that has truly isolated these hidden holes in the late-stage black holes that are very blurry and very shiny," Koss said. "This is the first time this population has been discovered. We found a surprising number of super-massive black holes that are getting bigger and faster in the final phases of the galaxy merging."
Scientists have theorized that every big galaxy hosts a supermassive black hole in its center. When the galaxies melt, so are their black holes. This process lasts for billions of years, but ends in seconds. At present, the supermassive joining of black holes has never been directly observed.
Finding galactic cores so close is difficult because the latent phases of galactic fusion push away a lot of gas and dust – especially in the finite, most frightening stages – a blurry glance. Astronomers have not been able to follow this type of event so far.
"Powerfully blurred galaxy nuclei do not have bright sources of dots in the center like many bright, unobtrusive super-massive black holes," Koss said. "But we were able to detect them thanks to the X-ray (BAT) telescope data. Then we used the ultimate laser abilities of the AO Keck Observatory to perform high-resolution, near infrared images to see the double core through gas and dust and discover hidden merger. "
Koss and his team support the theory that joining the galaxy explains how some super-massive black holes become so monstrously large.
There are competing ideas; One idea is to have a bunch of gas in the galaxy that slowly nourishes the super-massive black hole. The other idea is that you need galaxies to boost the growth. Our data claim for the second case, that these galaxies are very important in stimulating the growth of super-massive black holes, "Koss said.
Research can also help astronomers follow the black hole for the first time.
Koss and his team are focused on the galaxy with an average distance of 330 million light years from Earth. Many galaxies are similar to the size of the Milky Way. Photos suggest that this is likely to happen in about a billion years when our galaxy stays with the nearby galaxy of Andromeda.