In astrophysics self-interacting dark matter is a hypothetical form of dark matter consisting of particles with strong self-interactions. This type of dark matter was postulated to resolve a number of conflicts between observations and simulations on the galactic scale and smaller. Self-interacting dark matter has also been postulated as an explanation for the DAMA annual modulation signal.
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Famous quotes containing the words dark and/or matter:
“But the dark changed to red, and torches shone,
And deafening music shook the leaves; a troop
Shouldered a litter with a wounded man,
Or smote upon the string and to the sound
Sang of the beast that gave the fatal wound.”
—William Butler Yeats (1865–1939)
“It seems to me that upbringings have themes. The parents set the theme, either explicitly or implicitly, and the children pick it up, sometimes accurately and sometimes not so accurately.... The theme may be “Our family has a distinguished heritage that you must live up to” or “No matter what happens, we are fortunate to be together in this lovely corner of the earth” or “We have worked hard so that you can have the opportunities we didn’t have.””
—Calvin Trillin (20th century)