Sentences with phrase «galactic center»

In the Monoceros patch observed by the SDSS team, the ring appears to extend over 16,000 ly (5,000 parsecs or pc) above and below the galactic plane, with stars below the plane extending about 2,000 pc further from galactic center than those located above the plane; it also appear to be somewhat less than 13,000 ly (4,000 pc) wide.
Such «supercritical accretion» is thought to be a possible mechanism in the formation of supermassive black holes at galactic centers in very short time periods (which are observed very early in cosmic time).
Region in galactic center containing the Arches Cluster and Bubbles, the Quintuplet Cluster, and the Pistol Nebula and Star (more from Andrea Moneti) and Moneti et al, 2001).
The clusters are tight knots of hundreds of thousands to millions of stars that orbit around galactic centers like moths around a streetlamp.
That this extremely massive star has been found near galactic center is no accident, as recent observations suggest that star formation there appears to be more favorable to the creation of stars that are much more massive than than Sol.
Like the Milky Way, Andromeda's galactic center appears to harbor an X-ray source characteristic of a black hole of a million or more solar masses.
«Best view yet of dusty cloud passing galactic center black hole.»
The theory also implies that our own galactic center is in the quiet period.
The MASTER network of telescopes was constructed by MSU scientists under a guidance of Prof. Vladimir Lipunov for a purpose of detecting and researching the most energetic flashes in the Universe — Gamma - ray bursts (a process accompanying formations of black holes and neutron stars), and also thermonuclear flashes on white dwarfs, galactic center flares and quasars.
Such black holes in the stellar and planetary configurations have black holes of the weaker varieties unlike galactic centered black holes.
And the supermassive black holes that lurk in galactic centers swallow billions of stars.
Their fragmentary measurements suggested this arm might wrap around almost the entirety of the Milky Way, but they lost its trail — and crucial evidence for its galaxy - encircling breadth — in the vicinity of the dark, roiling galactic center.
Morris, a younger member of what was shaping up to be a ucla galactic center mafia, joined the hunt for explanations of the strange goings - on.
The Fermi galactic center GeV excess and implications for dark matter.
Although supermassive black holes usually occupy galactic centers, SDSS1133 is located at least 2,600 light - years from its host galaxy's core.
However, the stars will be thrown into different orbits around the new galactic center.
Chandra X-Ray Observatory, NASA, UMass — larger and jumbo x-ray images This 400 by 900 light - years (ly) mosaic image of the Milky Way galactic center includes «hundreds of white dwarf stars, neutron stars, and black holes bathed in an incandescent fog of multimillion - degree gas» — plus a central black hole in the bright patch at center (more at Chandra X-Ray Observatory and Wang et al, 2001).
The Pistol Star lies near the Milky Way's hot and violent, but metal - rich galactic center, deep within its central bulge.
Scientists think that Big Bird could have been produced by an ancient, super powerful galactic center called a «blazar» from 9.5 billion light - years away.
According to a popular scenario explaining the formation and evolution of galaxies and supermassive black holes, radiation from galactic centers — where supermassive black holes locate — can significantly influence the molecular gas (such as CO) and the star formation activities of the galaxies.
Previously, astronomers have used x-ray telescopes to observe strong winds very near the massive black holes at galactic centers (artist's concept, inset) and infrared wavelengths to detect the vast outflows of cool gas (bluish haze in artist's concept, main image) from such galaxies as a whole, but they've never done so in the same galaxy.
The team's observations help shed light on the nature of ULXs, and impact our understanding of how supermassive black holes in galactic centers are formed and how matter rapidly falls onto those black holes.
«One of the immediate impacts is that we might see highly magnetized stars in the centers of galaxies, and that includes our own galactic center,» Guillochon added.
To find the experimental limit on the variations of the gravitational constant (anisotropy in G), Will interpreted existing gravimeter data, ignoring all accelerations too small to be related to the galactic center mass.
Another End Time tale may be coming via the blasting from our galactic center a cosmic ray of such strong emissions it will literally fry our planet to a crispy critter!
Presumably black holes should be there as well, either born on the galactic center's doorstep from the deaths of massive stars or arriving via migration from farther out.
This energy may even have far - reaching effects outside the galactic center by driving energetic jets of radiation outward.
Hailey and his team used Chandra data because black holes at the galactic center should be most visible via x-rays, produced when the black holes form a binary system with a low - mass star and feed on their captured companion.
Since the 1970s theorists studying this process have predicted a galactic center swarming with thousands of black holes bounded by an outer «cusp» beyond which the black holes» numbers should plummet.
These weak emissions would also be intermixed with many other x-ray sources from the galactic center.
But despite their predicted prevalence, these black holes are so dark and quiescent that they have been all but undetectable against the galactic center's stellar splendor — at least, until now.
The fact there must then be tens of thousands of black holes at the galactic center stems from the notion these objects would only very rarely be accompanied by a star to make them glow — most would remain isolated, invisible singletons.
For perspective, apart from these newfound dozen scientists have only identified about 60 black holes in the entire Milky Way, and all but a few are far from the galactic center.
The study appears to vindicate predictions from theorists such as Mark Morris, an astrophysicist at the University of California, Los Angeles, who in 1993 penned a key paper predicting tens of thousands of stellar - mass black holes would form a disk around the galactic center.
It even has that rectangular feature in the middle called a bar, caused by the odd gravitational interactions of several billion stars as they orbit near the galactic center.
Anticipated but never before seen, the existence of tens of thousands of these dark objects at the galactic center could have far - reaching implications for astrophysics
That could add to the debate over whether a mysterious excess in gamma rays at the galactic center is from pulsars or dark matter (SN: 12/23/17, p. 12).
Our black hole's violent meeting with G2 began last year, and as it continues, it should give astronomers a chance to peer inside the galactic center — the neighborhood around the black hole — rather than just simulate the swirling disc of gas and dust surrounding it.
It is also harder to see faint solar system objects in bright areas on the sky like the galactic center.
The discovery follows decades of astronomers searching for small black holes in the galactic center, where a supermassive black hole lives (SN: 3/4/17, p. 8).
An overabundance of black hole X-ray binaries in the galactic center from tidal captures.
The way to find out is to watch how G2's orbit evolves on its trip through the galactic center.
The skinny black line on a plot of stellar rotation speed versus distance was expected to go down — stars close to the galactic center should orbit faster than stars at the edge because all the mass concentrated at the center of the galaxy pulls most powerfully on the closest stars.
Kaku responds: Stellar black holes have been found in our vicinity, so we need not journey 25,000 light - years or so to the galactic center (where there is a monstrous black hole weighing about 3 million solar masses).
Stars farther from the galactic center unexpectedly appear to move more slowly than stars closer in.
At a certain distance from the galactic center, the rotation curves for stars in most every spiral galaxy simply do not fall; instead, at some point they flatten.
As Earth moves around the sun and the sun moves around the galactic center, our planet passes through dark matter.

Phrases with «galactic center»

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