Sentences with phrase «intervening galaxy»
The phrase "intervening galaxy" refers to a galaxy that lies between us (Earth) and another galaxy. It is like a middle ground or obstacle that we have to look through to see the galaxy beyond it. Full definition
Observations with ground - based telescopes then suggested that the galaxies» light had been bent and magnified by the gravity of intervening galaxies on its way...
newscientist.com
Observations with ground - based telescopes then suggested that the galaxies» light had been bent and magnified by the gravity of intervening galaxies on its way to Earth (Science, vol 330, p 800).
Light from a supernova travels to Earth's telescopes after passing through both patches of empty space (where the universe expands more rapidly) and through intervening galaxies filled with matter (where the expansion slows).
The way their light has been bent can also be used to study the dark matter content of the intervening galaxies, says team member Asantha Cooray of the University of California, Irvine.
The light from the supernova, nicknamed Refsdal, traveled for over 9 billion years along paths dictated by the gravity of the intervening galaxy.
Such distortions often create multiple images of the more remote object; the brightness of each image depends on the distribution of mass around the intervening galaxy.
Those variations denote a lumpy gravitational field, which indicates the intervening galaxies are surrounded by small, unseen companion galaxies.
The image showed that the galaxy had an arc shape characteristic of gravitational lensing by an intervening galaxy, Graham reported last month at a meeting of the American Astronomical Society in Pittsburgh.
«This means that light from a cosmologically distant quasar will be deflected, or gravitationally lensed, by the intervening galaxy along the line of sight before arriving at an observer on the Earth,» said Chen of the phenomenon of gravitational lensing, which was predicted by Einstein in 1936.
That object is associated with an intervening galaxy, but is less massive — it could be a collection of stars or midsize black holes.
If the astronomers point a telescope in the direction of one of the two intervening galaxies, they will see photons from the quasar that were deflected by that galaxy; they would get the same result by looking at the other galaxy.
This intervening galaxy is massive enough to bend the light from the supernova and its host galaxy into multiple images.
As this light travels through an intervening galaxy on its way to Earth, it can pick up the unique spectral signature from the galaxy's gas.
This enabled them to map the strength and structure of the intervening galaxy's magnetic field.
Similarly, the supernova images do not arrive at Earth at the same time because some of the light is delayed by traveling around bends created by the gravity of dense dark matter in the intervening galaxy cluster.
The background galaxy has been gravitationally lensed, its light magnified and distorted by the intervening galaxy cluster.
The two quasars were actually the same object whose light had been split into two paths by the gravitational influence of an intervening galaxy.
In the rare cases that a distant galaxy, an intervening galaxy producing a gravitational lens, and the Earth line up perfectly, the image forms a circle of light known as an Einstein ring.
Astronomers can see this individual star because its light has been highly magnified by an intervening galaxy cluster through a process called gravitational lensing, said Liliya Williams, University professor in the Minnesota Institute for Astrophysics.
That means, the scientists said, that the different regions in the intervening galaxy affected the waves differently.
«The polarization of the waves coming from the background quasar, combined with the fact that the waves producing the two lensed images traveled through different parts of the intervening galaxy, allowed us to learn some important facts about the galaxy's magnetic field,» said Sui Ann Mao, Minerva Research Group Leader for the Max Planck Institute for Radio Astronomy in Bonn, Germany.