Volume 555, July 2013
|Number of page(s)||5|
|Published online||15 July 2013|
Rapid cooling of Cassiopeia A as a phase transition in dense QCD
Institute for Theoretical Physics, J. W. Goethe University,
Frankfurt am Main,
Accepted: 19 June 2013
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.
Key words: dense matter / stars: neutron / pulsars: general
© ESO, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.