Accretion disks around neutron and strange stars in R + aR2 gravity

被引：18
作者：
Staykov, Kalin V. [1 ]
Doneva, Daniela D. [2 ,3 ]
Yazadjiev, Stoytcho S. [1 ]
机构：
[1] Univ Sofia, Fac Phys, Dept Theoret Phys, 5 James Boucher Blvd, Sofia 1161, Bulgaria
[2] Eberhard Karls Univ Tubingen, Theoret Astrophys, Morgenstelle 10, D-72076 Tubingen, Germany
[3] Bulgarian Acad Sci, INRNE, 72 Tsarigradsko Chaussee Blvd, Sofia 1784, Bulgaria
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 08期
关键词：
accretion; modified gravity; neutron stars; GENERAL-RELATIVISTIC SPECTRA; BLACK-HOLE; TEMPERATURE PROFILES; ROTATING POLYTROPES; COMPACT OBJECT; DISCS; EQUATION; GRAVITY; MODELS; STATE;
D O I：
10.1088/1475-7516/2016/08/061
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the electromagnetic spectrum of accretion disks around neutron and strange stars in R + aR(2) gravity. Both static and rapidly rotating models are investigated. The results are compared with the General Relativistic results. We found difference between the results in both theories of about 50% for the electromagnetic flux and about 20% in the luminosity for models with equal mass and angular velocity in both theories. The observed differences are much lower for models rotating with Keplerian velocity and with equal masses.
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页数：18
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