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The study results shine on Supermassive Black Hole Collisions

Adaptive optics help to correct the blur effect of light created by the Earth's atmosphere. W. M. Keck Observatory's laser…

Adaptive optics help to correct the blur effect of light created by the Earth’s atmosphere. W. M. Keck Observatory’s laser support-adaptive optics (LGS AO) system uses a laser to create an artificial star to measure atmospheric disturbances. This results in crisp high resolution images that allow astronauts to see celestial objects, such as hidden galaxy fusions, in ultimate detail. PC: Billy Doaner / WM Keck Observatory.

Astronomers recently caught the best views of dates for two super-massive black holes on a collision course in the middle of merged galaxies. The discovery can help researchers understand how super massive black holes get so big.

“See the pairs of fusion galaxies associated with” big “black holes so close to each other was pretty amazing,” said Michael Koss, senior author of the study. Eureka Scientific Inc. in Kirkland, Washington. “The pictures are quite powerful because they are ten times sharper than images from normal telescopes on the ground. It’s similar to going from legal blind (20/200 vision) to perfect 20/20 vision when putting on your glasses. In our study, we see two galaxies immediately when the pictures were taken. You can not argue with that; It is a very pure result that is not based on interpretation. “

The study results appeared online on November 7, 201

8 edition of the journal Nature .

Koss and his research team made the discovery after completing the largest systematic investigation of nearby galaxies using high resolution images taken with the WM Keck Observatory’s adaptive optics (AO) and near infrared camera (NIRC2), along with more than 20 years of archive film Hubble Space Telescope. With the data derived from this comprehensive survey, astronomers can identify the types of galaxies most likely will have close pair of super massive black holes.

“This is the first major systematic survey of 500 galaxies that really isolated these hidden fusions with black holes in the phase, which are very dark and bright,” says Koss. “This is the first time this population has really been discovered. We found a surprising number of super massive black holes that grow bigger and faster in the final stages of the galaxy fusion. “

These images reveal the completion of a union between pairs of galactic nuclei in the moving nuclei of colliding galaxies. The top left-hand corner of Hubble’s Wide Field Camera 3 shows the merged galaxy NGC 6240. A close-up of the The two glowing kernels in this galactic union are shown on the right. This view, taken in infrared light, penetrates the dense cloud of dust and gas that encloses the two colliding galaxies and reveals the active nuclei. The sharp black holes in these nuclei grow rapidly as they eat on gas kicked by the galaxy fusion. The rapid growth of the black holes occurs over the last 10 million to 20 million years of the merger. Pictures of four other colliding galaxies, along with close-ups of their coalescing nuclei in the light nuclei, are shown below snapshots of NGC 6240. The photos of the light cores were taken in near infrared light by the WM Keck Observatory in Hawaii, with the help of lp of adaptive optics to sharpen the view. The reference images (left) of the merged galaxies were taken by Panoramic Survey Telescope and Rapid Response System (Pan-STARRS). The two nuclei of the Hubble and the Keck Observatory images are only about 3000 light years apart – a close embrace in cosmic terms. If there are pairs of black holes, they are likely to merge within the next 10 million years to form a more solid black hole. These observations are part of the largest survey of cores in nearby galaxies using high-resolution images in close infrared light taken by the Hubble and Keck observatories. The average distance of the survey glaciers is 330 million light years from the ground. KREDIT: NASA / ESA / M. KOSS (EUREKA SCIENTIFIC, INC.) / PAN-STARRS / W. M. KECK OBSERVATORY

Scientists study that every big galaxy plays host to a super massive black hole in the center. When galaxies merged, you also make their respective black holes. This process takes billions of years but ends in seconds. Currently, a super mass black black fusion has never been observed directly.

Finding galactic nuclei so close to each other is difficult because the latent stages of a galaxy fusion give rise to a lot of gas and dust, especially in the last violent stages -Screened view Astronomers could not observe this type of event so far.

“Heavy-dark galaxy cores do not have a bright point source in the middle, as many bright, unshaded super-massive black holes make,” Koss says. “But we could detect them by using Burst Alert Telescope (BAT) X-ray data. We then used the superior laser capabilities of the Keck Observatory’s AO system to perform high resolution, near infrared imagery to clearly see a double core through the gas and the dam and reveal the hidden mergers. “

Koss and his findings find the theory that galaxy mergers explain how some super massive black holes become so monstrously big.

“There are competing ideas: one idea is that you have a lot of gas in the galaxy that slowly feeds the super massive black hole. The other is the idea that you need galaxy fusions to trigger great growth. Our data argues for the second case that these galaxy fusions are very critical to propagate the growth of super massive black holes, “says Koss.

The investigation can also help astronomers to observe for the first time a black hole fusion.

Koss and his team focused on galaxies with an average distance of 330 million light years from Earth. Many of the galaxies are about the same as the Winter Street. The pictures suggest what is likely to happen for about a billion years when our own galaxy joins the nearby Andromeda galaxy. The function (f, b, e, v, n, t, s) {om (f.fbq) returns; n = f.fbq = function () {n.callMethod? n.callMethod.apply (n, argument): n.queue.push (argument)}; if (! f.fbq) f.fbq = n; n.push = n; n.loaded = 0 ;! n.version = & # 39; 2.0 & # 39 ;; n.queue = []; t = b.createElement (e); t.async = 0 !; t.src = v; s = b.getElementsByTagName (e) [0]; s.parentNode.insertBefore (t, s)} (windows, documents, “script”, “”); fbq (& # 39; init & # 39 ;, & # 39; 1997581490524296 & # 39;); fbq (& # 39; track & # 39 ;, PageView & # 39;);
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