Search results
Results from the WOW.Com Content Network
A gravitational lens is matter, such as a cluster of galaxies or a point particle, that bends light from a distant source as it travels toward an observer. The amount of gravitational lensing is described by Albert Einstein 's general theory of relativity .
Lensing mass maps can also potentially reveal "dark clusters," clusters containing overdense concentrations of dark matter but relatively insignificant amounts of baryonic matter. Comparison of the dark matter distribution mapped using lensing with the distribution of the baryons using optical and X-ray data reveals the interplay of the dark ...
Dark matter map for a patch of sky based on gravitational lensing analysis of a Kilo-Degree survey [63] Structure formation refers to the period after the Big Bang when density perturbations collapsed to form stars, galaxies, and clusters.
The technique is known as gravitational lensing, which is when a massive amount of matter -- like a cluster of galaxies -- creates a gravitational field that distorts and magnifies the light from ...
“This dark matter doesn’t interact with light, but it does have a gravitational effect,” O’Riordan said. “Gravitational lensing therefore is sensitive to the presence of this dark matter ...
Gravitational microlensing of an extrasolar planet. If the lensing object is a star with a planet orbiting it, this is an extreme example of a binary lens event. If the source crosses a caustic, the deviations from a standard event can be large even for low mass planets.
The team's findings, which were published Monday in the journal Nature, also unveil a method of investigating dark matter, ... These arcs are caused by gravitational lensing: Light from distant ...
In weak lensing by large-scale structure, the thin-lens approximation may break down, and low-density extended structures may not be well approximated by multiple thin-lens planes. In this case, the deflection can be derived by instead assuming that the gravitational potential is slowly varying everywhere (for this reason, this approximation is ...