Assertion: dark matter's presence | /r/HasProperty | inferred
Facets:
value: from gravitational effects on visible matter
type: OTHER
value: from gravitational effects
type: CAUSE
value: from heat
type: CAUSE
Source sentences:
text: The presence of this missing matter in the centres of galaxies and clusters of galaxies has also been inferred from the motion and heat of gas that gives rise to observed X-rays.
text: The presence of dark matter (DM) in the halo is inferred from its gravitational effect on a spiral galaxy's rotation curve.
text: In astrophysics and cosmology, dark matter is hypothetical matter of unknown composition that does not emit or reflect enough electromagnetic radiation to be observed directly, but whose presence can be inferred from gravitational effects on visible matter.
text: In astronomy and cosmology, dark matter is hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter.
text: What we mean by the distinction is the following: In direct detection, a neutralino is actually observed in the laboratory (usually through an inelastic collision with a nucleus in which a small amount of energy is deposited, typically a few keV) while in indirect detection, the neutralino is never seen directly; rather, the decay products of the neutralino are detected and the presence of a neutralino is inferred.
text: In physics and cosmology, dark matter is hypothetical matter that does not interact with the electromagnetic force, but whose presence can be inferred from gravitational effects on visible matter.
text: Dark matter is defined as hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter.
text: Dark matter is matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects.