Sentences with phrase «host galaxy ngc»

As a result, some accretion disks around supermassive black holes are incredibly bright, and can outshine all the billions of stars in their host galaxy put together.

SN 2006gy had a luminosity (or intrinsic brightness) equal to that of some 50 billion suns — around 10 times brighter than host galaxy NGC 1260 — before beginning a slow decline.

Gravity, primarily from unseen dark matter, can hold the ring in a nearly circular orbit around the host galaxy.

In x-ray emission, SN 3006gy was also nearly as bright as the core of host galaxy NGC 1260, but not bright enough for a Type - Ia supernova (more).

«It appears that that relation does not work very well with extremely massive black holes; they are a larger fraction of the host galaxy's mass,» Ma said.

These mysterious strictures — tens of thousands of light - years old — did not emerge from the quasar's black hole, but are slowly orbiting their host galaxy, long after the merger was completed.

The host galaxy NGC 4993 and two other sources in the field can also be seen.

«It's the first time we've been able to identify the host galaxy of an FRB.»

A galaxy's core size typically is correlated to the dimensions of its host galaxy, but in this case, the central region is much larger than astronomers would expect for the galaxy's size.

Because of their distance from the host galaxy, the ghostly green structures might have taken tens of thousands of years to light up after the quasar outburst, and would likely fade tens of thousands of years after the quasar itself comes to an end, according to astronomers.

Although GRB 000131, like other gamma - ray bursts, appears to have taken place in a remote «early galaxy» (or «sub-galactic clumps» of stars) that is smaller than today's luminous galaxies, astronomers found it difficult to detect that extremely dim, sub-galactic clump of stars even with the Hubble Space Telescope, as the observed fading of the afterglow indicated that the maximum brightness of the gamma - ray emission was explosion was at least 10,000 times brighter than its host galaxy.

If the rate holds, the black hole will escape its host galaxy entirely in another 20 million years.

Quasars are peculiar objects that radiate as much energy per second as a thousand or more galaxies, from a region that has a diameter about one millionth that of the host galaxy.

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.

It appears as a faint star to the lower right of the central region of its host galaxy M82 (Credit: NASA / JPL - Caltech)

«Scientists have identified close to 50 dwarf galaxy candidates around the Milky Way — most of them are aligned in a plane orbiting the centre of the host galaxy,» Dr Jerjen said.

Using the twin telescopes of the Keck Observatory on Maunakea, Hawaii, the researchers were able to gather spectroscopic data from the afterglow of the supernova and observations of its host galaxy to better understand what might be driving this oddity.

By the present time, a black hole and its host galaxy have grown in mass by factors of a million or more, roughly in lockstep.

It has been known for long that some of these massive black holes eject spectacular plasma jets at a near speed - of - light that can extend far beyond the confines of their host galaxy.

GRB 000131 was at least 10,000 times brighter than its remote host galaxy (more at GRB 000131 and Bloom et al, 2001).

It appears as a faint star to the lower right of the central region of its host galaxy M82

The position of the most likely host galaxy, VHS7, is highlighted on the plot.

The signal was coming from a host galaxy named NGC 4993, located 130 million light - years from Earth.

This striking ring - like feature is a direct result of a smaller intruder galaxy — possibly one of two objects to the right of the ring — that careened through the core of the host galaxy.

The supermassive black hole at the center of NGC 4258 is about ten times larger than the one in the Milky Way, and is also consuming material at a faster rate, potentially increasing its impact on the evolution of its host galaxy.

FRB 150807, which the researchers believe most likely originated from a galaxy named VHS7 located between 3.2 and 6.5 billion light - years from Earth, was seen to be weakly distorted by material within its host galaxy.

In this illustration a black hole emits part of the accreted matter in the form of energetic radiation (blue), without slowing down star formation within the host galaxy (purple regions).

Yoshiki and the team's result suggests that the radiation from a supermassive black hole does not always affect the molecular gas and star formation of its host galaxy.

In today's local Universe, black holes typically reach a mass of 0.2 to 0.5 percent of their host galaxy's mass.

On the other had, other data suggests that stars were still forming throughout the host galaxy,» Trakhtenbrot said.

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.

Because of this remarkable disparity, the team deduced this black hole grew so quickly the host galaxy was not able to keep pace, calling into question previous thinking on the co-evolution of galaxies and their central black holes.

«The LRIS spectrograph on Keck I was used to measure a spectrum at the location of the supernova and was used to measure the distance to the supernova host galaxy,» Tommaso Treu, the GLASS project's principal investigator and Professor of Physics and Astronomy at the University of California, Los Angeles.

MAUNA KEA, Hawaii — An international team of researchers analyzing decades of observations from many facilities — including the W. M. Keck Observatory on Mauna Kea, the Pan-STARRS1 telescope on Haleakala and NASA's Swift satellite — has discovered what appears to be a black hole booted from its host galaxy.

In CID - 947, the black hole mass is 10 percent that of its host galaxy.

For example a NBA basketball game in the supernova host galaxy would appear to us to last 120 minutes, instead of the standard 48 minutes it does on Earth.

Keel speculated that this quasar variability might be explained if there are two massive black holes circling each other in the host galaxy's center.

Building on this discovery, the CfA team found that SN 2017egm's host galaxy has a high concentration of elements heavier than hydrogen and helium, which astronomers call «metals.»

The new Hubble images are the most detailed observations of a quasar host galaxy ever, says Schawinski.

«The current idea is that a low - metal environment is important in creating superluminous supernovae, and that's why they tend to occur in low mass galaxies, but DES15E2mlf is in a relatively massive galaxy compared to the typical host galaxy for superluminous supernovae,» said Pan, a postdoctoral researcher at UC Santa Cruz and first author of the paper.

FRB 121102 could come from a bright region around a black hole in the centre of its host galaxy that spews radio waves as it vaporises gas and plasma.

Its existence in galaxies was robustly established in the 1970s with a variety of techniques, including the measurement of the rotation speed of gas and stars, which provides a way to effectively «weigh» the host galaxy and determine its total mass.

This quasar was the only one without a known host galaxy.

He pointed out that a past event — a «minor merger» where the host galaxy ate up its «satellite» galaxy (a small low - mass galaxy orbiting it)-- would be the key to activating the Seyfert nucleus.

This intervening galaxy is massive enough to bend the light from the supernova and its host galaxy into multiple images.

If it exists, it should eventually sink into the center of the host galaxy.»

Astronomers think that the source of such powerful activity is the gravitational energy released from superheated matter falling onto a supermassive black hole (SMBH) that resides in the center of the host galaxy.

Most galaxies have a black hole at the center, and astronomers have found the mass is consistently about 1 / 1000th the mass of the host galaxy.

It is also located in a much smaller and younger host galaxy, and is only detected during a single, several - hour burst.

The resulting debris is absorbed into the disk of the more massive host galaxy before it approaches the center.