2016/08/31 by Basem Ghayour, Jafar Khodagholizadeh · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Detector #Gravitation #Gravitational wave #Inflation (cosmology) #Pulsars and Gravitational Waves Research #Sensitivity (control systems) #Spectral density #Spectrum (functional analysis) #Statistical Mechanics and Entropy #Thermal #astro-ph.CO
paper · pdf · doi:10.1140/epjc/s10052-017-5135-8
published as Eur. Phys. J. C (2017) 77:560 · 12 pages, 4 figures
arxiv created 2016/09/11 · openalex created_date 2016/09/30 · openalex publication_date 2017/08/01 · arxiv updated 2019/08/06 · openalex updated_date 2026/08/05
The thermal spectrum of relic gravitational waves enhances the usual spectrum. Our analysis shows that there exist some chances for detection of the thermal spectrum in addition to the usual spectrum by comparison with sensitivity of Adv.LIGO of GW150914 and detector based on the maser light. The behavior of the inflation and reheating stages are often known as power law expansion like S(η )∝ η 1+β , S(η )∝ η 1+β s , respectively, with constraints 1+β <0, 1+β s>0 . The β and β s have an unique effect on the shape of the spectrum. We find some values of the β and β s by considering the mentioned comparison. As obtained, the results give us more information as regards the evolution of inflation and reheating stages.