Sentences with phrase «central black hole by»

In December 2011, astronomers identified the gas cloud, called G2, and found that its orbit would bring it perilously close to the Milky Way's central black hole by mid-2013.

In general, the stars in a galaxy outweigh the central black holes by about a factor of 1,000.

Not exact matches

But almost all of that light is being produced by the galaxy's central supermassive black hole — not by its stars.

The bright discs of gas around a galaxy's central black hole are thought to be obscured by a torus of dust.

Some unlucky ones may happen to pass too close to the central black hole, where they are destroyed and eventually swallowed by the black hole.

A leading theory is that star - making materials are scattered by torrents of energy released by a galaxy's central supermassive black hole as it sloppily devours matter.

Many distant quasars — luminous galaxies, thought to be powered by large central black holes — are known to contain warm dust, which glows at infrared wavelengths.

The star got too close to its galaxy's central black hole about 290 million years ago, and collisions among its torn - apart pieces caused an eruption of optical, ultraviolet and X-ray light that was first spotted by scientists in 2014.

This process is likely stopped early on by powerful gas outflows from supernova explosions, stellar winds and possibly even from the central supermassive black hole.

Astronomers have observed tornadolike winds powered by a central active supermassive black hole, such as the one in this image, pervading a galaxy.

The central black hole, theybelieve, is girdled by a thin disk of gas that is spiraling inwardtoward doom.

Astronomers say a likely reason this particular cluster is so productive is that that the cooling of gas at its center is not being countered by the emission of hot jets from a central black hole.

Until recently, it was not clear what prevented the delicate filaments from being destroyed by competing gravitational forces, but Hubble Space Telescope images suggest they are supported by magnetic fields generated near the galaxy's central black hole.

X-rays from hot gas in a cluster of galaxies (left) outline two «supercavities» cleared out by an eruption from a central black hole (artist's view, right).

Binary black holes are expected to be common in large galaxies, since galaxies are thought to grow by merging with other galaxies, each of which would presumably bring a central black hole with it.

By comparing differences in the X-ray spectra between Type I and Type II galaxies, the researchers concluded that, regardless of which way the galaxy faces Earth, the central black holes in Type I galaxies consume matter and emit energy much faster compared with the black holes at the center of Type II galaxies.

By analyzing this time difference and by measuring how fast the material is moving around the center of the galaxy, they were able to determine the mass of this central black holBy analyzing this time difference and by measuring how fast the material is moving around the center of the galaxy, they were able to determine the mass of this central black holby measuring how fast the material is moving around the center of the galaxy, they were able to determine the mass of this central black hole.

The MASSIVE Survey was funded in 2014 by the National Science Foundation to weigh the stars, dark matter and central black holes of the 100 most massive, nearby galaxies: those larger than 300 billion solar masses and within 350 million light - years of Earth, a region that contains millions of galaxies.

In particular, the explanation given by Mancuso and colleagues is based on the close relation that exists between star formation and the growth of the central black hole inside massive galaxies.

A conceptual rendition of gas being driven into a supermassive black hole following a supernova explosion Strong turbulence caused by supernova explosions inside a dense molecular gas disk in the central region of a galaxy disturbs the stable motion of gas.

These objects also get flung about by the gravity of the central IMBH, causing them to be found at greater distances from the cluster's center than would be expected if no black hole existed.

Keel said that presumably the brightness changes are governed by the rate at which material is falling onto the central black hole.

If galaxies that have never been through a merger, like NGC 4178 — detectable by their lack of stellar bulges — have their own central black holes, their properties could help tell the story.

Not coincidentally, galaxy mergers would also trigger the birth of a quasar by pouring material into the central supermassive black hole.

Figure 3: A schematic view of the fact that an ionized gas outflow (green) driven by the central supermassive black hole does not affect the star formation of its host galaxy.

Captured by the Chandra X-ray Observatory in 2013 an outburst 400X brighter is the highest energy event observed so far from our galaxy's central black hole.

Previous estimates of the distance to NGC 4151's central black hole relied on measurements of redshift — how wavelengths of light are lengthened by an object's motion away from Earth - based observers.

Our galaxy, the Milky Way, contains a supermassive black hole at its core surrounded by a central bulge of old, yellowish stars.

These galactic types are all characterized by violent activity at their cores, usually explained as arising from an accretion disk of hot gases that surrounds a central black hole having a mass of about 1,000,000,000 Suns.

The model shows that a black hole with more than 300 million times the mass of the Sun darkens the central image by changing the effects of the gravitational lens.

As a swirling disk of gas gradually falls into the central black hole, it heats up and some of the gas is blown off the disk by intense radiation in a wind at speeds up to a tenth of light speed (more illustrations).

Stars close to the black - hole «whirlpool» orbit at a faster rate, in keeping with fundamental laws of orbital motion around a massive central body, as described by Johannes Kepler four centuries ago.

These distant quasars are thought to «turn on» when the host galaxy's central black hole is «fueled» by material drawn in during an early stage of the galaxy's development, before the galaxy «settles down» to a more sedate life.

Today, quasars are thought to be one of several types of active galactic nuclei, all of which are powered by central black holes.

The galaxy hosts a bright quasar that may have illuminated the ghostly structure by hitting it with a beam of light from hot gas around a central black hole.

The quasar itself is a central black hole, surrounded by a disk of swirling matter, and possibly sending out particles in two tightly focussed jets.

The bright center of the galaxy is thought to be caused by the ejection of huge amounts of super-hot gas from the region around a central black hole.

Astronomers believe that supermassive, central black holes generate the radio, X-ray, and gamma - ray energy radiated by active galaxies such as Centaurus A, as well as quasars like SDSS J1030 +0524.

SDSS studies have probed the dark matter environments of quasars through clustering measurements, revealed populations of quasars whose central engines are hidden by obscuring dust, captured changes in quasar spectra that show clouds moving in the gravitational grip of the central black hole, and allowed a comprehensive census of the much fainter accreting black holes (active galactic nuclei, or AGN) in present - day galaxies.

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