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The Beginning and Ends of Double White Dwarfs

1–5 Jul 2019
Geological Museum
Europe/Copenhagen timezone

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Session

Posters

2 Jul 2019, 15:20
Main Auditorium (Geological Museum)

Main Auditorium

Geological Museum

Øster Voldgade 5-7 DK-1350 Copenhagen

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  1. 38. Explore the Double Degenerate scenario using Phantom
    Dr Pablo Loren-Aguilar (University of Exeter)
    02/07/2019, 15:20
    Poster

    The double-degenerate scenario is, nowadays, the preferred model to
    explain the majority of Type Ia supernovae. In order to explore it, a
    vast number of studies have been performed during the last decades using
    a large variety of methods. From the theoretical point of view,
    numerical simulations using the Smoothed Particle Hydrodynamics (SPH)
    method have played an essential role understanding...

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  2. 23. Properties of the mass stream– accreting matter interaction in two Double White Dwarfs
    Daniela Boneva (Space Research and Technology Institute, BAS)
    02/07/2019, 15:20
    Poster

    We study the physical properties of the interacting processes between the components of two double white dwarf binary stars, V803 Cen and CR Boo, depending on the evolutionary stages for each of the two targets, separately. Both objects are semi-detached binaries, influenced by the mass transfer mechanism. The initial conditions suggest disturbances in the flow parameters, followed by...

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  3. 45. The formation of close double white dwarfs
    Dr HuaJu Li (Yunnan Observatories)
    02/07/2019, 15:20
    Poster

    Close double white dwarfs(CDWDs) are good tests for theories of binary evolution, potential progenitors of Type Ia supernovae, and important contributors of gravitational wave signal at low frequencies. We used a binary population synthesis code of a population of 1 million binaries to study the characteristics of CDWDs, the mass transfer stability criterion comes from adiabatic mass loss...

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  4. 46. The structure of the common envelope in the CEW model for Type Ia supernova
    Mr Ren Song
    02/07/2019, 15:20
    Poster

    Context. Although Type Ia supernovae (SNe Ia) are so important in many astrophysical fields, their progenitor nature is still unclear. Recently, Meng&Podsiadlowski (MP17) developed a new version of the single-degenerate model, i.e. the common-envelope wind (CEW) model. However, this model is still under development and some problems are still open, e.g. what is the exact appearance of a system...

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  5. 25. White dwarf-neutron star binary progenitors for ultra-compact X-ray binaries
    Alexey Bobrick (Lund University)
    02/07/2019, 15:20
    Poster

    White dwarf-neutron star binaries are among the main progenitors for ultra-compact X-ray binaries. They spiral in to contact by emitting gravitational waves and depending on the mass of the white dwarf turn into stably transferring ultra-compact X-ray binaries or produce supernova-like events following a tidal disruption of the white dwarf. Nearly all the stably transferring systems evolve...

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