arXiv Open Access 2023

Implications for the Supermassive Black Hole Binaries from the NANOGrav 15-year Data Set

Yan-Chen Bi Yu-Mei Wu Zu-Cheng Chen Qing-Guo Huang

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Abstrak

NANOGrav, EPTA, PPTA, and CPTA have announced the evidence for a stochastic signal from their latest data sets. Supermassive black hole binaries (SMBHBs) are supposed to be the most promising gravitational-wave (GW) sources of pulsar timing arrays. Assuming an astro-informed formation model, we use the NANOGrav 15-year data set to constrain the gravitational wave background (GWB) from SMBHBs. Our results prefer a large turn-over eccentricity of the SMBHB orbit when GWs begin to dominate the SMBHBs evolution. Furthermore, the GWB spectrum is extrapolated to the space-borne GW detector frequency band by including inspiral-merge-cutoff phases of SMBHBs and should be detected by LISA, Taiji and TianQin in the near future.

Topik & Kata Kunci

astro-ph.CO gr-qc hep-ph

Penulis (4)

Yan-Chen Bi

Yu-Mei Wu

Zu-Cheng Chen

Qing-Guo Huang

Format Sitasi

APA MLA BibTeX

Bi, Y., Wu, Y., Chen, Z., Huang, Q. (2023). Implications for the Supermassive Black Hole Binaries from the NANOGrav 15-year Data Set. https://arxiv.org/abs/2307.00722

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Informasi Jurnal

Tahun Terbit: 2023
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓