P13 an ULX that is a Potential Progenitor of Merging BH-NS System

• Autorzy: Beldycki B. , Belczynski K.
• Języki publikacji: EN

Abstrakty

EN

We have studied the future evolution of a recently discovered ULX source P13 in NGC 7793. This source was shown to contain a 5-15 M⊙ black hole and a massive 18-23 M⊙ B9Ia companion on a 64 day orbit. For low black hole mass (5-10 M⊙) and high companion mass ≳20 M⊙ the binary is predicted to initiate a common envelope evolution in near future and significantly decrease the orbital separation (6 hr orbit). This leads to a high probability (≈70%) of the system surviving a supernova explosion that will form a neutron star out of the companion. About one third of the surviving BH-NS systems will merge within Hubble time and be a source of high frequency gravitational radiation. We estimate that the chances of detection of BH-NS systems with Advanced LIGO/Virgo that form via P13-evolutionary channel are at the level of 0.1 yr^-1 with wide range of allowed probability 0÷0.6 yr^-1. This is the fourth empirical estimate of BH-NS merger rate.

Słowa kluczowe

EN

binaries: close; stars: evolution; stars: neutron; gravitational waves

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2016
• Tom: Vol. 66, No. 3
• Strony: 347--355
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Beldycki B.

• Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, 00-716 Warsaw, Poland

autor

Belczynski K.

• Warsaw University Astronomical Observatory, al. Ujazdowskie 4, 00-478 Warsaw, Poland
• Warsaw Virgo Group

Bibliografia

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• Belczynski, K., Bulik, T. and Bailyn, C. 2011, ApJ, 742, 2.
• Belczynski, K., Bulik, T., Mandel, I., Sathyaprakash, B.S., Zdziarski, A.A., and Mikołajewska, J. 2013, ApJ, 764, 96.
• Belczynski, K., Holz, D.E., Bulik, T., and O’Shaughnessy, R. 2016, Nature, 534, 512.
• Dominik, M., Belczynski, K., Fryer, Ch., Holz, D.E., Berti, E., Bulik, T., Mandel, I., and O’Shaughnessy, R. 2012, ApJ, 759, 52.
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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).