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Strange Quark Stars: Structural Properties and Possible Signatures for Their Existence

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Physics of Neutron Star Interiors

Part of the book series: Lecture Notes in Physics ((LNP,volume 578))

Abstract

We give a brief introduction to the physics of strange quark matter, and explore the possibility this novel deconfined phase of matter might be absolutely stable. Strange quark stars represent one of the most intriguing consequences of such a possibility. We study the structural properties of this hypothetical new class of stellar compact objects, both for non-rotating and rapidly rotating configurations in general relativity. Next, using recent observational data for the X-ray burster 4U 1820-30, the newly discovered millisecond X-ray pulsar SAX J1808.4-3658, and for the atoll source 4U 1728-34, we argue that the compact stars in these X-ray sources are likely strange star candidates. Finally, we study the conversion of a neutron star to a strange quark star. We show that the total amount of energy liberated in the conversion process is in the range (1 - 4) x 1053 erg, in agreement with the energy required to power gamma-ray bursts at cosmological distances.

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Authors and Affiliations

  1. Dipartimento di Fisica “E. Fermi”, Universitá di Pisa, and INFN Sezione di Pisa, via Buonarroti, 2, I-56127, Pisa, Italy

    Ignazio Bombaci

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  1. Ignazio Bombaci
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Editors and Affiliations

  1. Fachbereich Physik, Universität Rostock, 18051, Rostock, Deutschland

    David Blaschke

  2. Institut de Physique Nuclaire, Groupe de Physique Theorique, 15, rue Georges Clemenceau, 91406, Orsay Cedex, France

    Armen Sedrakian

  3. Institute for Nuclear and Particle Astrophysics Nuclear Science Division, Lawrence Berkeley National Lab., Berkeley, CA, 94720, USA

    Norman K. Glendenning

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Bombaci, I. (2001). Strange Quark Stars: Structural Properties and Possible Signatures for Their Existence. In: Blaschke, D., Sedrakian, A., Glendenning, N.K. (eds) Physics of Neutron Star Interiors. Lecture Notes in Physics, vol 578. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44578-1_10

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