Low Mass Neutron Stars and the Equation of State of Dense Matter

Abstract

Neutron-star radii provide useful information on the equation of state of neutron rich matter. Particularly interesting is the density dependence of the equation of state (EOS). For example, the softening of the EOS at high density, where the pressure rises slower than anticipated, could signal a transition to an exotic phase. However, extracting the density dependence of the EOS requires measuring the radii of neutron stars for a broad range of masses. A ``normal'' 1.4 solar mass neutron star has a central density of a few times nuclear-matter saturation density. In contrast, low mass (of the order of 0.5 solar masses) neutron stars have central densities near nuclear-matter saturation density so its radius provides information on the EOS at low density. Unfortunately, low-mass stars are rare because they may be hard to form. Instead, a precision measurement of nuclear radii on atomic nuclei may contain similar information. Indeed, we find a strong correlation between the neutron radius of 208Pb and the radius of a 0.5 solar-mass neutron star. Thus, the radius of such a neutron star can be inferred from a measurement of the the neutron radius of 208Pb. Comparing this value to the measured radius of a 1.4 solar-mass neutron star should provide the strongest constraint to date on the density dependence of the equation of state.

9 pages and 5 eps. figures (included)

References in corpus (25)

• Neutron Star Structure and the Equation of State
• A New Parameterization for the Lagrangian Density of Relativistic Mean Field Theory
• A unified equation of state of dense matter and neutron star structure
• Relativistic Equation of State of Nuclear Matter for Supernova and Neutron Star
• Neutron Star Structure and the Neutron Radius of 208Pb
• Neutron Star Mass Measurements. I. Radio Pulsars
• Relativistic Mean-Field Theory and the High-Density Nuclear Equation of State
• Crustal Heating and Quiescent Emission from Transiently Accreting Neutron Stars
• Pulsar Constraints on Neutron Star Structure and Equation of State
• Parity Violating Measurements of Neutron Densities
• The neutron radii of Lead and neutron stars
• Towards a Mass and Radius Determination of the Nearby Isolated Neutron Star RX J185635-3754
• Discovery of absorption features in the X-ray spectrum of an isolated neutron star
• Is RX J185635-375 a Quark Star?
• The Optical Light Curves of Cygnus X-2 (V1341 Cyg) and the Mass of its Neutron Star
• Constraining URCA cooling of neutron stars from the neutron radius of 208Pb
• A Revised Parallax and its Implications for RX J185635-3754
• Inner edge of neutron-star crust with SLy effective nucleon-nucleon interactions
• Evolution of Proto-Neutron stars with kaon condensates
• Identification of A Transient Neutron Star in Quiescence in the Globular Cluster NGC 5139
• On the formation of low-mass black holes in massive binary stars
• Equation of state of dense matter and the minimum mass of cold neutron stars
• Evidence for a Mid-Atomic-Number Atmosphere in the Neutron Star 1E1207.4-5209
• Neutrino Pair Emission from Cooper Pair Breaking and Recombination in Superfluid Quark Matter
• Probing Quark Matter In Neutron Stars

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