Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Urbancová, Gabriela"'
Autor:
Matuszková, Monika, Török, Gabriel, Lančová, Debora, Klimovičová, Kateřina, Horák, Jiří, Urbanec, Martin, Šrámková, Eva, Straub, Odele, Urbancová, Gabriela, Karas, Vladimír
Publikováno v:
A&A 691, A167 (2024)
We present a full general relativistic analytic solution for a radiation-pressure supported equilibrium fluid torus orbiting a rotating neutron star (NS). Previously developed analytical methods are thoroughly applied in the Hartle-Thorne geometry, i
Externí odkaz:
http://arxiv.org/abs/2403.16226
Autor:
Matuszková, Monika, Török, Gabriel, Klimovičová, Kateřina, Horák, Jiří, Straub, Odele, Šrámková, Eva, Lančová, Debora, Urbanec, Martin, Urbancová, Gabriela, Karas, Vladimír
Publikováno v:
A&A 691, A168 (2024)
The four characteristic oscillation frequencies of accretion flows are, in addition to the Keplerian orbital frequency, often discussed in the context of the time variability of the black hole and neutron star (NS) low-mass X-ray binaries (LMXBs). Th
Externí odkaz:
http://arxiv.org/abs/2403.16231
Autor:
Šrámková, Eva, Matuszková, Monika, Klimovičová, Kateřina, Horák, Jiři, Straub, Odele, Urbancová, Gabriela, Urbanec, Martin, Karas, Vladimír, Török, Gabriel, Lančová, Debora
We examine the influence of quadrupole moment of a slowly rotating neutron star (NS) on the oscillations of a fluid accretion disk (torus) orbiting a compact object the spacetime around which is described by the Hartle-Thorne geometry. Explicit formu
Externí odkaz:
http://arxiv.org/abs/2303.03859
Autor:
Matuszková, Monika, Klimovičová, Kateřina, Urbancová, Gabriela, Lančová, Debora, Šrámková, Eva, Török, Gabriel
Publikováno v:
Proceedings of RAGtime, Volume 2020-December, Pages 185 - 201
We examine the influence of the quadrupole moment of a slowly rotating neutron star on the oscillations of non-slender accretion tori. We apply previously developed methods to perform analytical calculations of frequencies of the radial epicyclic mod
Externí odkaz:
http://arxiv.org/abs/2203.10653
Autor:
Török, Gabriel, Kotrlová, Andrea, Matuszková, Monika, Klimovičová, Kateřina, Lančová, Debora, Urbancová, Gabriela, Šrámková, Eva
Following the previous research on epicyclic oscillations of accretion disks around black holes (BHs) and neutron stars (NSs), a new model of high-frequency quasi-periodic oscillations (QPOs) has been proposed (CT model), which deals with oscillation
Externí odkaz:
http://arxiv.org/abs/2203.04787
Autor:
Urbancová, Gabriela, Urbanec, Martin, Török, Gabriel, Stuchlík, Zdeněk, Blaschke, Martin, Miller, John C.
The external Hartle-Thorne geometry, which describes the space-time outside a slowly-rotating compact star, is characterized by the gravitational mass $M$, angular momentum $J$ and quadrupole moment $Q$ of the star and gives a convenient description
Externí odkaz:
http://arxiv.org/abs/1905.00730
Autor:
Török, Gabriel, Goluchová, Kateřina, Urbanec, Martin, Šrámková, Eva, Adámek, Karel, Urbancová, Gabriela, Pecháček, Tomáš, Bakala, Pavel, Stuchlík, Zdeněk, Horák, Jiří, Juryšek, Jakub
Twin-peak quasi-periodic oscillations (QPOs) are observed in the X-ray power-density spectra of several accreting low-mass neutron star (NS) binaries. In our previous work we have considered several QPO models. We have identified and explored mass-an
Externí odkaz:
http://arxiv.org/abs/1611.06087
Publikováno v:
Phys. Rev. D 91, 063007 (2015)
Isolated pulsars are rotating neutron stars with accurately measured angular velocities $\Omega$, and their time derivatives that show unambiguously that the pulsars are slowing down. The commonly accepted view is that it arises through emission of m
Externí odkaz:
http://arxiv.org/abs/1608.01383
Isolated pulsars are rotating neutron stars with accurately measured angular velocities $\Omega$, and their time derivatives which show unambiguously that the pulsars are slowing down. Although the exact mechanism of the spin-down is a question of de
Externí odkaz:
http://arxiv.org/abs/1503.09122
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