{"language":[{"iso":"eng"}],"article_number":"L13","date_created":"2024-09-05T12:39:13Z","doi":"10.3847/2041-8213/abdd1c","oa":1,"scopus_import":"1","year":"2021","month":"03","publication_identifier":{"issn":["2041-8205"],"eissn":["2041-8213"]},"article_processing_charge":"No","extern":"1","date_published":"2021-03-03T00:00:00Z","oa_version":"Preprint","author":[{"full_name":"Zrake, Jonathan","first_name":"Jonathan","last_name":"Zrake"},{"last_name":"Tiede","first_name":"Christopher","full_name":"Tiede, Christopher"},{"first_name":"Andrew","last_name":"MacFadyen","full_name":"MacFadyen, Andrew"},{"id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","full_name":"Haiman, Zoltán","last_name":"Haiman","orcid":"0000-0003-3633-5403","first_name":"Zoltán"}],"OA_place":"repository","type":"journal_article","_id":"17592","intvolume":"       909","publication_status":"published","external_id":{"arxiv":["2010.09707"]},"main_file_link":[{"url":"https://arxiv.org/abs/2010.09707","open_access":"1"}],"status":"public","day":"03","OA_type":"green","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","issue":"1","article_type":"original","date_updated":"2025-01-03T11:32:01Z","quality_controlled":"1","title":"Equilibrium eccentricity of accreting binaries","abstract":[{"lang":"eng","text":"Using high-resolution hydrodynamics simulations, we show that equal-mass binaries accreting from a circumbinary disk evolve toward an orbital eccentricity of e ≃ 0.45, unless they are initialized on a nearly circular orbit with e ≲ 0.08, in which case they further circularize. The implied bi-modal eccentricity distribution resembles that seen in post-AGB stellar binaries. Large accretion spikes around periapse impart a tell-tale, quasiperiodic, bursty signature on the light curves of eccentric binaries. We predict that intermediate-mass and massive black hole binaries at z ≲ 10 entering the LISA band will have measurable eccentricities in the range of e ≃ 10−3 − 10−2, if they have experienced a gas-driven phase. On the other hand, GW190521 would have entered the LIGO/Virgo band with undetectable eccentricity ∼10−6 if it had been driven into the gravitational-wave regime by a gas disk."}],"volume":909,"publication":"The Astrophysical Journal Letters","publisher":"American Astronomical Society","citation":{"chicago":"Zrake, Jonathan, Christopher Tiede, Andrew MacFadyen, and Zoltán Haiman. “Equilibrium Eccentricity of Accreting Binaries.” <i>The Astrophysical Journal Letters</i>. American Astronomical Society, 2021. <a href=\"https://doi.org/10.3847/2041-8213/abdd1c\">https://doi.org/10.3847/2041-8213/abdd1c</a>.","short":"J. Zrake, C. Tiede, A. MacFadyen, Z. Haiman, The Astrophysical Journal Letters 909 (2021).","apa":"Zrake, J., Tiede, C., MacFadyen, A., &#38; Haiman, Z. (2021). Equilibrium eccentricity of accreting binaries. <i>The Astrophysical Journal Letters</i>. American Astronomical Society. <a href=\"https://doi.org/10.3847/2041-8213/abdd1c\">https://doi.org/10.3847/2041-8213/abdd1c</a>","mla":"Zrake, Jonathan, et al. “Equilibrium Eccentricity of Accreting Binaries.” <i>The Astrophysical Journal Letters</i>, vol. 909, no. 1, L13, American Astronomical Society, 2021, doi:<a href=\"https://doi.org/10.3847/2041-8213/abdd1c\">10.3847/2041-8213/abdd1c</a>.","ieee":"J. Zrake, C. Tiede, A. MacFadyen, and Z. Haiman, “Equilibrium eccentricity of accreting binaries,” <i>The Astrophysical Journal Letters</i>, vol. 909, no. 1. American Astronomical Society, 2021.","ista":"Zrake J, Tiede C, MacFadyen A, Haiman Z. 2021. Equilibrium eccentricity of accreting binaries. The Astrophysical Journal Letters. 909(1), L13.","ama":"Zrake J, Tiede C, MacFadyen A, Haiman Z. Equilibrium eccentricity of accreting binaries. <i>The Astrophysical Journal Letters</i>. 2021;909(1). doi:<a href=\"https://doi.org/10.3847/2041-8213/abdd1c\">10.3847/2041-8213/abdd1c</a>"},"arxiv":1}