But recently, a survey has found several quasars —
bright cores of galaxies, powered by matter falling into a supermassive black hole — that existed less than a billion years after the big bang.
The ideal background «lights» for such a study are quasars, which are very distant
bright cores of active galaxies powered by black holes.
Quasars are
bright cores of distant active galaxies.
The two black holes live roughly 3.7 billion light - years away in a quasar, the ferociously
bright core of a galaxy lit up by...
Not exact matches
One
bright spot, he said: «The U.S. retains its
core strengths in a number
of important areas such as university education, innovation, and entrepreneurship, which means that we have the resources to reverse this trend.»
Each flavour within the
Core Range now has a number to help distinguish between the products, with a stamp design to celebrate where the beer is made and touches
of bright colours to appeal to the latest trends.
With
bright aromas
of white peach and meyer lemon and a hint
of toasted oak, our rich, velvety #UncagedChardonnay boasts complex
core flavors
of apricot, tangerine, vanilla and beeswax.
«I know our future is only
bright if I can keep a cohesion, and a
core of players who have been educated here and can play year - in year - out together.»
It's because they're in a far more enviable position, with a far
brighter future, than maybe anyone else in the junior circuit, and because
of that there will be room to fill the holes that open elsewhere while the
core does its thing.»
And what stands out most to me — what stirs at the
core of all
of my touch points — is the positivity and how it has shined
bright through acts
of bravery, generosity, love, and strength.
In any case, what this encounter with an otherwise
bright and likeable fellow Labour member highlighted to me was that Labour urgently needs to tackle those sorts
of attitudes and stand proud for its
core, inclusive and secular values.
The quick transformations, they say, are probably driven by a pulsar — the rapidly spinning
core of an exploded star — visible as the leftmost
of the two
bright dots in this image.
The dusty spiral arms stand out wonderfully, and its two dwarf elliptical companions are visible: NGC 205 to the right
of the spiral's
bright core, and M32 almost buried in M31's arms on the left.
A beautiful mixture
of hot, blue star - forming regions, redder, cooler regions
of gas, and dark lanes
of opaque dust can be seen, all swirling together around a
bright core.
The phenomenon starts when a star explodes with a
bright flash, caused by a shock wave emerging from the surface
of the progenitor stars after the
core collapse phase.
This all changed with the first generation
of stars, so
bright and powerful that their light started to break apart hydrogen atoms around them, while their
cores produced the elements essential for life itself.
The new research examines the Arches cluster, a stunning nest
of bright stars near the galaxy's
core.
Astronomers have scrutinized about 100 nebulas for signs
of a small, faint companion amid the glare
of the
bright core, but so far, in some five out
of six cases they've come up empty.
The images revealed a
bright quasar, the energetic signature
of a black hole, residing far from the galactic
core.
Quasars are incredibly
bright powerhouses
of radiation that are believed to be fueled by gas falling into a massive black hole at the
core of a galaxy.
A lack
of stars close to the galactic center distinguishes massive galaxies from standard elliptical galaxies, which are much
brighter in their
cores.
Astronomers have yet to find one
of these, but it should be possible to see up to 10 per year thanks to a new generation
of telescopes capable
of spotting small changes in
bright galactic
cores.
Narrow, dark
cores flicker within the
bright filaments
of gas around sunspots.
High - energy x-ray sources (blue) are seen near the
core of the Milky Way (
bright region at lower right) in this composite image.
Core collapse supernova (CCSN) rates suffer from large uncertainties as many CCSNe exploding in regions
of bright background emission and significant dust extinction remain unobserved.
The large amount
of star formation and the «beads on a string» feature in the
core of SpARCS1049 +56 are likely the result
of the
Brightest Cluster Galaxy in the process
of gobbling up a gas - rich spiral galaxy.
It has a
bright core surrounded by a faint but extensive halo
of stars.
Astronomers were surprised when the VLA revealed that a
bright new object has appeared near the
core of a famous galaxy.
Altair has the New Suspected Variable designation NSV 24910 and is unusually
bright for its spectral type and so may be becoming a subgiant star that is beginning to evolve off the main sequence, as it begins to fuse the increasing amounts
of helium «ash» mixed with hydrogen at its
core.
A billion solar - mass black hole lies at the heart
of the
bright core.
«Is this
bright infrared light caused by the black - hole - powered
core of the galaxy or by a huge burst
of star formation?
The Crab Nebula, one
of the most famous nebulae and seen here by the Hubble Space Telescope, is actually the expanding explosion
of a
core collapse supernova, the light
of which was
bright enough to be seen here on Earth in the year 1054 CE, as documented by Chinese astronomers at the time.
So, instead
of relying on this method, Melis» team used radio measurements to perform the work, which opened up a more reliable distance beacon: quasars, amazingly
bright galactic
cores powered by supermassive black holes.
Astronomers have discovered a new type
of quasar — an incredibly
bright galactic
core powered by a supermassive black hole — that current theory fails to predict.
This illustration reveals the celestial fireworks deep inside the crowded
core of a developing galaxy, as seen from a hypothetical planetary system consisting
of a
bright, white star and single planet.
The zero age main - sequence (ZAMS) spectral type
of the
brightest radio
core is O7.5.
According to Professor Jim Kaler at the University
of Illinois» Department
of Astronomy, Rana started life as a main sequence F8 dwarf (somewhat hotter and
brighter than Sol with slightly greater mass) around 7.5 billion years ago, but
core hydrogen fusion has ceased causing the star to expand and cool as an active subgiant before becoming much
brighter and larger «as a true giant star» through
core helium fusion.
There is another Barium - dwarf candidate star, Chi1 Orionis or HR 2047 (G0 V), in the same Ursa Major stellar moving group, which suggests that all three stars may have formed a multiple system until their orbital stability was disrupted when the once,
brighter and bigger AGB star shed most
of an estimated original mass
of 2.6 Solar to reveal its white dwarf
core about 30 million years ago (Porto de Mello and da Silva, 1997).
The
core of the star has survived the explosion as a «pulsar,» visible in the Hubble image as the lower
of the two moderately
bright stars to the upper left
of center.
Active galactic nuclei (AGN) are a type
of extremely
bright galaxy
core seemingly fueled by powerful black holes actively gobbling large amounts
of material.
This hypothesis suggests that all three stars may have formed a multiple system until their orbital stability was disrupted when the once,
brighter and bigger AGB star (HR 6094 B) shed most
of an estimated original mass
of 2.6 Solar to reveal its white dwarf
core about 30 million years ago (Porto de Mello and da Silva, 1997).
This map shows the positions
of 118
of the
brightest galaxies in the
core of this cluster.
Then, using the twin 10 - meter optical and infrared telescopes at the W. M. Keck Observatory on Mauna Kea in Hawaii, the astronomers singled out 10
bright globular clusters (large compact groups
of stars orbiting the galaxy's
core) and used spectral data to measure their motions.
Analysis
of data collected by the Hubble and Chandra space telescopes and the Sloan Digital Sky Survey showed a
bright quasar located far from its galaxy's
core.
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.
Since gamma radiation provides the energy preventing gravitational collapse
of the outer layers
of the star onto the
core, at some point the loss
of this energy (through so - called «pair instability») causes violent pulsations that eject a large fraction
of the outer layers
of the star and eventually a star's outer layers to collapse inward to create a thermonuclear explosion that, in theory, would be
brighter than previously detected supernova.
Fourth Row, Left: In 5.1 billion years the
cores of the Milky Way and Andromeda appear as a pair
of bright lobes.
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).
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