{"volume":522,"_id":"17548","extern":"1","title":"The importance of live binary evolution in numerical simulations of binaries embedded in circumbinary discs","abstract":[{"text":"The shrinking of a binary orbit driven by the interaction with a gaseous circumbinary disc, initially advocated as a potential way to catalyse the binary merger, has recently been debated in the case of geometrically thick (i.e. with H/R ≳ 0.1) discs. However, a clear consensus is still missing mainly owing to numerical limitations, such as fixed orbit binaries or lack of resolution inside the cavity carved by the binary in its circumbinary disc. In this work, we assess the importance of evolving the binary orbit by means of hydrodynamic simulations performed with the code gizmo in meshless finite mass mode. In order to model the interaction between equal mass circular binaries and their locally isothermal circumbinary discs, we enforce hyper-Lagrangian resolution inside the cavity. We find that fixing the binary orbit ultimately leads to an overestimate of the gravitational torque that the gas exerts on the binary and an underestimate of the torque due to the accretion of material on to the binary components. Furthermore, we find that the modulation of the accretion rate on the binary orbital period is strongly suppressed in the fixed orbit simulation, while it is clearly present in the live binary simulations. This has potential implications for the prediction of the observable periodicities in massive black hole binary candidates.","lang":"eng"}],"publication_status":"published","intvolume":"       522","article_processing_charge":"No","quality_controlled":"1","scopus_import":"1","month":"04","publication_identifier":{"issn":["0035-8711","1365-2966"]},"publication":"Monthly Notices of the Royal Astronomical Society","year":"2023","doi":"10.1093/mnras/stad1070","oa":1,"publisher":"Oxford University Press","type":"journal_article","oa_version":"Published Version","citation":{"mla":"Franchini, Alessia, et al. “The Importance of Live Binary Evolution in Numerical Simulations of Binaries Embedded in Circumbinary Discs.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 522, no. 1, Oxford University Press, 2023, pp. 1569–74, doi:<a href=\"https://doi.org/10.1093/mnras/stad1070\">10.1093/mnras/stad1070</a>.","apa":"Franchini, A., Lupi, A., Sesana, A., &#38; Haiman, Z. (2023). The importance of live binary evolution in numerical simulations of binaries embedded in circumbinary discs. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/stad1070\">https://doi.org/10.1093/mnras/stad1070</a>","ama":"Franchini A, Lupi A, Sesana A, Haiman Z. The importance of live binary evolution in numerical simulations of binaries embedded in circumbinary discs. <i>Monthly Notices of the Royal Astronomical Society</i>. 2023;522(1):1569-1574. doi:<a href=\"https://doi.org/10.1093/mnras/stad1070\">10.1093/mnras/stad1070</a>","chicago":"Franchini, Alessia, Alessandro Lupi, Alberto Sesana, and Zoltán Haiman. “The Importance of Live Binary Evolution in Numerical Simulations of Binaries Embedded in Circumbinary Discs.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2023. <a href=\"https://doi.org/10.1093/mnras/stad1070\">https://doi.org/10.1093/mnras/stad1070</a>.","short":"A. Franchini, A. Lupi, A. Sesana, Z. Haiman, Monthly Notices of the Royal Astronomical Society 522 (2023) 1569–1574.","ieee":"A. Franchini, A. Lupi, A. Sesana, and Z. Haiman, “The importance of live binary evolution in numerical simulations of binaries embedded in circumbinary discs,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 522, no. 1. Oxford University Press, pp. 1569–1574, 2023.","ista":"Franchini A, Lupi A, Sesana A, Haiman Z. 2023. The importance of live binary evolution in numerical simulations of binaries embedded in circumbinary discs. Monthly Notices of the Royal Astronomical Society. 522(1), 1569–1574."},"date_updated":"2024-09-18T09:30:21Z","day":"12","status":"public","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1093/mnras/stad1070"}],"article_type":"original","date_published":"2023-04-12T00:00:00Z","language":[{"iso":"eng"}],"issue":"1","page":"1569-1574","author":[{"last_name":"Franchini","first_name":"Alessia","full_name":"Franchini, Alessia"},{"first_name":"Alessandro","full_name":"Lupi, Alessandro","last_name":"Lupi"},{"first_name":"Alberto","full_name":"Sesana, Alberto","last_name":"Sesana"},{"full_name":"Haiman, Zoltán","first_name":"Zoltán","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","last_name":"Haiman"}],"date_created":"2024-09-05T10:08:46Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345"}