Detecting the stochastic gravitational wave background with the TianQin detector

نویسندگان

چکیده

The detection of stochastic gravitational wave background (SGWB) is among the leading scientific goals space-borne observatory, which would have significant impact on astrophysics and fundamental physics. In this work, we developed a data analysis software, \texttt{TQSGWB}, can extract isotropic SGWB using Bayes method based TianQin detector. We find that for noise cross spectrum, there are imaginary components they play an important role in breaking degeneracy position common laser link. When corrections considered, credible regions parameters reduced by two orders magnitude. demonstrate various signals instrumental could be estimated directly absence Galactic confusion foreground through Markov chain Monte Carlo sampling. With only three-month observation, able to confidently detect SGWBs with energy density as low $\Omega_{\rm PL} = 1.3 \times 10^{-12}$, Flat} 6.0 SP} 9.0 power-law, flat, single-peak models respectively.

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ژورنال

عنوان ژورنال: Physical review

سال: 2022

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevd.106.124027