An old star that has collapsed under its own gravity to form a white dwarf, neutron star, or black hole.
- Two papers scheduled for an upcoming Astrophysical Journal Letters appear to support the collapsar model.
- Still, the collapsar is an extremely attractive model that fits a wide range of observed gamma-ray bursts.
- Pruet and his colleagues are also investigating whether collapsars might be the sources of other elements as well.
Late 20th century: from collapse, on the pattern of words such as pulsar.
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