کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8144777 | 1524065 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of entropy on properties of proto neutron star PSR J0348+0432
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک اتمی و مولکولی و اپتیک
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چکیده انگلیسی
Effect of entropy on the properties of the proto neutron star (PNS) PSR J0348+0432 is studied in the framework of relativistic mean field theory under neutrino trapping. As the entropy per baryon increases from S = 1.0 to S = 2.0, the radius of the PNS PSR J0348+0432 increases from R = 13.41-12.46â¯km to R = 14.46-13.56â¯km, which implies an increase of approximately 8%-9%. However, the effect of entropy on the center relative particle density of neutrons and Îs is small. As the entropy per baryon increases from S= 1.0 to S= 2.0, the center relative particle density of Σâ, Σ0 and Σ+ increase by approximately 3000-2 times, 100-20 times and 4-1 times, respectively. The relative particle density of Îâ and Î0 also increase with the increase of that in entropy. The center relative particle density of Î0 increases by approximately 13-2 times as the entropy per baryon increases from S= 1.0 to S= 2.0. Therefore, entropy exerts a significant impact on the center relative particle density of Σâ and Î0.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Physics - Volume 56, Issue 4, August 2018, Pages 1648-1655
Journal: Chinese Journal of Physics - Volume 56, Issue 4, August 2018, Pages 1648-1655
نویسندگان
Xian-Feng Zhao,