Phase Transitions in Dense Baryonic Matter and Cooling of Rotating Neutron Stars

Details Phase Transitions in Dense Baryonic Matter and Cooling of Rotating Neutron Stars Phase Transitions in Dense Baryonic Matter and Cooling of Rotating Neutron Stars

2009-11-26

arxiv.org/abs/0911.5164v1

Acta Phys.Polon.Supp.3:701-710,2010

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

10 pages, 6 figures, paper presented at EMMI workshop Three Days of Strong Interactions, Wroclaw (Poland), July 9-11, 2009

Scientific paper

New astrophysical instruments such as skA (square kilometer Array) and IXO (formerly Constellation X) promise the discovery of tens of thousands of new isolated rotating neutron stars (pulsars), neutron stars in low-mass X-ray binaries (LMXBs), anomalous X-ray pulsars (AXPs), and soft gamma repeaters (SGRs). Many of these neutron stars will experience dramatic density changes over their active lifetimes, driven by either stellar spin-up or spin-down, which may trigger phase transitions in their dense baryonic cores. More than that, accretion of matter onto neutron stars in LMXBs is believed to cause pycno-nuclear fusion reactions in the inner crusts of neutron stars. The associated reaction rates may be drastically altered if strange quark matter would be absolutely stable. This paper outlines the investigative steps that need to be performed in order to explore the thermal response of neutron stars to rotationally-driven phase transitions in their cores as well as to nuclear burning scenarios in their crusts. Such research complements the exploration of the phase diagram of dense baryonic matter through particle collider experiments, as performed at RHIC in the USA and as planned at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany.

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