A dynamical, confining model and hot quark stars

We explore the consequences of an equation of the state (EOS) obtained in a confining Dyson-Schwinger equation model of QCD for the structure and stab ility of nonstrange quark stars at finite-T, and compare the results with t hose obtained using a bag-model EOS. Both models support a temperature prof ile that varies over the star's volume and the consequences of this are mod el independent. However, in our model the analogue of the bag pressure is ( T, mu)-dependent, which is not the case in the bag model. This is a signifi cant qualitative difference and comparing the results effects a primary goa l of elucidating the sensitivity of quark star properties to the form of th e EOS. (C) 1999 Elsevier Science B.V. All rights reserved.