Spherically symmetric dark energy structures in the context of Chaplygin gas model
| العنوان: | Spherically symmetric dark energy structures in the context of Chaplygin gas model |
|---|---|
| المؤلفون: | Tekola, Abiy G |
| المساهمون: | Tupper, Gary B, Viollier, Raoul D |
| بيانات النشر: | University of Cape Town, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | Physics |
| الوصف: | Includes bibliographical references (leaves 42-43). This paper investigates the existence of spherically symmetrical dark energy structures under the context of Chaplygin gas. A scaling solution of the form r -2/3 is found for the density and then we calculated the corresponding rotational curve and it turns out to be unrealistic implying that such objects don't exist. Finally we modified the equation of state of the Chaplygin gas to an equation of state of the form P = (j 2 P - A and compared p with observational data to see to what physical extent this equation works and it isdetermined that it works as far as a couple of hundred Mpc while the physical length of galaxies is in Kpc. implying the modified Chaplygin equation fits the observed rotational curves. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=od______3158::150f3c9d776be2c634c13719b74b1096 http://hdl.handle.net/11427/6518 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.od......3158..150f3c9d776be2c634c13719b74b1096 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |