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- Title
Rapid cooling of Cassiopeia A as a phase transition in dense QCD.
- Authors
Sedrakian, Armen
- Abstract
We present a model of the compact star in Cassiopea A that accounts for its unusually fast cooling behavior. This feature is interpreted as an enhancement in the neutrino emission triggered by a transition from a fully gapped, two-flavor, color-superconducting phase to a crystalline phase or an alternative gapless, color-superconducting phase. By fine-tuning a single parameter - the temperature of this transition - a specific cooling scenario can be selected that fits the Cas A data. Such a scenario requires a massive M ~ 2 M☉ star and is, therefore, distinctive from models invoking canonical 1.4 M☉ mass star with nucleonic pairing alone.
- Subjects
CASSIOPEIA (Constellation); PHASE transitions; TEMPERATURE of stars; NEUTRINO astrophysics; NARROW gap semiconductors
- Publication
Astronomy & Astrophysics / Astronomie et Astrophysique, 2013, Vol 555, Issue 5, p1
- ISSN
0004-6361
- Publication type
Article
- DOI
10.1051/0004-6361/201321541