Academic Journal
Constraining the Radii of Neutron Stars with Terrestrial Nuclear Laboratory Data
| العنوان: | Constraining the Radii of Neutron Stars with Terrestrial Nuclear Laboratory Data |
|---|---|
| المؤلفون: | Bao-an Li, Andrew W. Steiner |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/nucl-th/0511064v2.pdf. |
| سنة النشر: | 2006 |
| المجموعة: | CiteSeerX |
| الوصف: | Neutron star radii are primarily determined by the pressure of isospin asymmetric matter which is proportional to the slope of the nuclear symmetry energy. Available terrestrial laboratory data on the isospin diffusion in heavy-ion reactions at intermediate energies constrain the slope of the symmetry energy. Using this constraint, we show that the radius (radiation radius) of a 1.4 solar mass (M⊙) neutron star is between 11.5 (14.4) and 13.6 (16.3) km. Key words: PACS: 25.70.-z, 26.60.+c, 97.60.Jd, 24.10.-i With central pressures of 10 36 dynes/cm 2 and gravitational binding energies of 10 53 ergs, neutron stars are among the most exotic objects in the universe. Impressive progress has been made on the observable properties of neutron stars, such as masses, radii, spectra, and rotational properties [1,2,3,4,5,6,7,8]. However, a precise neutron star radius measurement still eludes us. The theoretical understanding of these observable properties demands an understanding of the relevant nuclear physics. For recent reviews, see Refs. [9,10,11,12,13,14,15,16,17]. The global properties of neutron stars: masses, radii, and composition, are determined by the Equation of State (EOS) of neutron-rich nucleonic matter, thus neutron stars are ideal astrophysical laboratories for investigating the |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.264.6542; http://arxiv.org/pdf/nucl-th/0511064v2.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.264.6542 http://arxiv.org/pdf/nucl-th/0511064v2.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.BCE2A1A8 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |