Sentences with phrase «galaxies appear brighter»

Specifically, Type II galaxies are tilted such that they are obscured by their own rings of dust, making Type I galaxies appear brighter by comparison.

Although both galaxy types host voracious supermassive black holes known as active galactic nuclei, which actively swallow matter and emit massive amounts of radiation, Type I galaxies appear brighter to astronomers» telescopes.

Not exact matches

It appears quite small without a telescope because only the central part is bright enough to be visible, but the full angular diameter of the galaxy is seven times that of the full moon.

Hubble made an educated guess based on the reasoning that the brightest stars in each galaxy all shine with the same luminosity, like light bulbs of equal wattage, so the fainter they appear, the farther away they lie.

SLUGGISH STARS A hydrogen signature reveals the structure of six galaxies (top, bright regions appear red) observed with the Very Large Telescope in Chile.

This plot reveals that not all the starlight is contained within the cities of stars — the galaxies — which appear as bright blue - white blobs.

Although it is among the brightest and nearest active galaxies, its torus still appeared tens of thousands of times smaller than the moon (arxiv.org/abs/1604.00205).

The galaxies — which would appear as flat, rotating disks — are brimming with extremely bright and massive blue stars.

In a paper that appeared in Physical Review Letters this week, the researchers specifically show that the lack of bright X-ray and radio sources at the center of our galaxy strongly disfavours the possibility that these objects constitute all of the mysterious dark matter in the universe.

Such a smash - up with a red giant would unleash much more energy than the decimation of a comet, so would have to occur in a distant galaxy to avoid appearing brighter than what was observed.

Researchers were able to study the quasar (seen above) in detail, thanks to the magnifying effect of a gravitational lens — a massive galaxy cluster in front of it — that caused it to appear brighter than it would have otherwise.

Each magnified image makes the galaxy appear as much as 10 times larger and brighter than it would look without the intervening lens.

The cluster is so massive that its powerful gravity bends the light from galaxies far behind it, making background objects appear larger and brighter in a phenomenon called gravitational lensing.

Astronomers were surprised when the VLA revealed that a bright new object has appeared near the core of a famous galaxy.

This «gravitational lens» magnifies galaxies behind the cluster, making them appear far brighter than they would if the foreground cluster of galaxies were not there.

Click to Enlarge (JPEG / 138.4 KB) This schematic image represents how light from a distant galaxy is distorted by the gravitational effects of a nearer foreground galaxy, which acts like a lens and makes the distant source appear distorted, but brighter, forming characteristic rings of light, known as Einstein rings.

«We are using the massive amounts of dark matter surrounding galaxies half - way across the Universe as cosmic telescopes to make even more distant galaxies appear bigger and brighter.»

For an object to appear as bright as most quasars do at their calculated distances, it must emit more energy than several dozen galaxies put together.

Its larger namesake the Sombrero Galaxy is another stunning example of an edge - on galaxy — in fact, the «Little Sombrero» is about the same size as its bright namesake at about 60 000 light - years across, but as it lies further away, it appears smaller in the sky (Credit: ESA / Hubble & NASA Acknowledgement: Josh Barrington)

Indeed, GRBs appear to emit produce even more energy than supernovae or even quasars (which are energetically bright accretion disks and bi-polar jets around supermassive black holes that are most commonly found in the active nuclei of some distant galaxies and possibly even in the pre-galaxy period after the Big Bang).

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.

New radio images of galaxies with bright quasar cores show that, though the galaxies appear normal in visible - light images, their gas has been disrupted by encounters with other galaxies.

Subsequently, however, an even more distant quasar with a tentative redshift of z = 6.40 was announced on January 9, 2003, near the SDSS detection limit of a redshift of z ~ 6.5 for bright quasars, and other teams of astronomers detected even more distant, fast - star - forming irregular proto - galaxies, including: gravitationally - lensed HCM 6A behind galaxy cluster Abell 370 with a redshift of z ~ 6.56, which appears to be converting about 40 Solar - masses into stars annually; (PhysicsWeb; IFA press release; Hu et al, 2002, in pdf; and erratum); and the possible «superwind - galaxy» LAE J1044 - 0130 (Subaru press release; and Ajiki et al, 2002, in pdf).

When a star explodes into a supernova, it emits a flash of light that can appear brighter than a galaxy.

CLICK ON IMAGE: This schematic represents how light from a distant galaxy is distorted by the gravitational effects of a nearer foreground galaxy, which acts like a lens and makes the distant source appear distorted, but brighter, forming characteristic rings of light, known as Einstein rings.

Some of the dust inside Centaurus A maps out what appears to be a barred spiral galaxy, which has recently merged with its giant elliptical host and is feeding gas into the host's central hole to produce bi-polar jets that are bright in radio wavelengths (more from APOD and ESA).