Modelling quantum aspects of disruption of a white dwarf star by a black hole
| Autor: | Mariusz Gajda, Tomasz Karpiuk, Mirosław Brewczyk, Marek Nikolajuk |
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| Rok vydání: | 2021 |
| Předmět: |
Science
Astrophysics::High Energy Astrophysical Phenomena Quantum turbulence FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Article General Relativity and Quantum Cosmology Transient astrophysical phenomena 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Computational astrophysics Binary system 010306 general physics 010303 astronomy & astrophysics Quantum Astrophysics::Galaxy Astrophysics Boson High Energy Astrophysical Phenomena (astro-ph.HE) Physics Multidisciplinary Degenerate energy levels White dwarf Astrophysical disks Fermion High-energy astrophysics Black hole Quantum Gases (cond-mat.quant-gas) Medicine Astrophysics::Earth and Planetary Astrophysics Compact astrophysical objects Astrophysics - High Energy Astrophysical Phenomena Condensed Matter - Quantum Gases |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-021-81707-5 |
| Popis: | We study the final stages of the evolution of a binary system consisted of a black hole and a white dwarf star. We implement the quantum hydrodynamic equations and carry out numerical simulations. As a model of a white dwarf star, we consider a zero temperature droplet of attractively interacting degenerate atomic bosons and spin-polarized atomic fermions. Such mixtures are investigated experimentally nowadays. We find that the white dwarf star is stripped off its mass while passing the periastron. Due to nonlinear effects, the accretion disk originated from the white dwarf becomes fragmented and the onset of a quantum turbulence with giant quantized vortices present in the bosonic component of the accretion disk is observed. The binary system ends its life in a spectacular way, revealing quantum features underlying the white dwarf star's structure. We find a charged mass, falling onto a black hole, could be responsible for recently discovered ultraluminous X-ray bursts. The simulations show that the final passage of a white dwarf near a black hole can cause a gamma-ray burst. 14 pages, 7 figures. Corresponding author -> MN email: m.nikolajuk@uwb.edu.pl; Printed in Scientific Reports |
| Databáze: | OpenAIRE |
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