Zobrazeno 1 - 10
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pro vyhledávání: '"Suvorov, Arthur G."'
A variety of high-energy events can take place in the seconds leading up to a binary neutron-star merger. Mechanisms involving tidal resonances, electrodynamic interactions, or shocks in mass-loaded wakes have been proposed as instigators of these pr
Externí odkaz:
http://arxiv.org/abs/2408.16283
Mature neutron stars are thought to be sufficiently cold that nuclei in the outer layers freeze, solidifying a crust. Crustal elasticity allows the star to support a set of seismic modes, such as torsional oscillations. These axial-parity modes can c
Externí odkaz:
http://arxiv.org/abs/2406.17195
Publikováno v:
Phys. Rev. D 109, 103023 (2024)
Tidal resonances in the final seconds of a binary neutron-star inspiral can excite oscillation modes in one or both of the constituents to large amplitudes. Under favorable circumstances, resonant pulsations can overstrain the stellar crust and unlea
Externí odkaz:
http://arxiv.org/abs/2404.14529
Publikováno v:
Phys. Rev. D 108, 084006 (2023)
Symmetries and conservation laws associated with the ideal Einstein-Euler system, for stationary and axisymmetric stars, can be utilized to define a set of flow constants. These quantities are conserved along flow lines in the sense that their gradie
Externí odkaz:
http://arxiv.org/abs/2309.08071
Publikováno v:
A&A 676, A59 (2023)
Gamma-ray bursts resulting from binary neutron-star mergers are sometimes preceded by precursor flares. These harbingers may be ignited by quasi-normal modes, excited by orbital resonances, shattering the stellar crust of one of the inspiralling star
Externí odkaz:
http://arxiv.org/abs/2304.07170
Autor:
Suvorov, Arthur G.
A short X-ray burst was observed from the radio-loud magnetar 1E 1547.0-5408 in 2022 April. Unusually however, the source stopped showing radio pulsations $\gtrsim 3\,$weeks prior to the burst. After recovery, radio timing revealed that the object ha
Externí odkaz:
http://arxiv.org/abs/2302.13777
Autor:
Suvorov, Arthur G., Melatos, Andrew
The radio pulsar GLEAM-X J162759.5-523504.3 has an extremely long spin period ($P = 1091.17\, \mbox{s}$), and yet seemingly continues to spin down rapidly ($\dot{P} < 1.2 \times 10^{-9}\, \mbox{ss}^{-1}$). The magnetic field strength that is implied,
Externí odkaz:
http://arxiv.org/abs/2301.08541
Publikováno v:
ApJ 940 128 (2022)
The high-mass X-ray binary LS I +61{\deg}303 is also cataloged as a gamma-ray binary as a result of frequent outbursts at TeV photon energies. The system has released two soft-gamma flares in the past, suggesting a magnetar interpretation for the com
Externí odkaz:
http://arxiv.org/abs/2210.09471
Publikováno v:
A&A 664, A177 (2022)
GRB 211211A was accompanied by a kilonova, implying a merger origin for the event. A precursor flare, modulated by quasi-periodic oscillations at $\approx 22\, \mbox{Hz}$, was also seen $\approx 1\, \mbox{s}$ prior to the main emission. It is suggest
Externí odkaz:
http://arxiv.org/abs/2205.11112
Buoyancy-restored modes inside neutron stars depend sensitively on both the microphysical (e.g., composition and entropy gradients) and macrophysical (e.g., stellar mass and radius) properties of the star. Asteroseismology efforts for $g$-modes are t
Externí odkaz:
http://arxiv.org/abs/2204.08492