detalle del documento
IDENTIFICACIÓN
oai:arXiv.org:2410.07333
Tema
Astrophysics - High Energy Astroph...Autor
Stiele, H. Kong, A. K. H.Categoría
ciencias: astrofísica
Año
2024
fecha de cotización
27/11/2024
Palabras clave
2023 radii qpos evolutionResumen
The X-ray transient, Swift J1727.7-1613 was first detected on 24 August 2023 by Swift/BAT and INTEGRAL.
We investigated data from the Neutron star Interior Composition Explorer (NICER) and the Neil Gehrels Swift Observatory taken between August and October 2023.
We studied diagnostic diagrams, energy spectra, and short term variability.
The observations cover the initial rise of the outburst in the hard state and the transition to the soft state.
We focused on the evolution of quasi-periodic oscillations (QPOs) using power-density spectra and on the evolution of the spectral parameters.
The overall evolution of Swift J1727.7-1613 is consistent with this source being a low-mass black hole X-ray binary.
Based on the Lense-Thirring precession interpretation of type-C QPOs we obtained outer radii for the hot inner flow and found that the overall evolution of these radii agrees well with the evolution of the inner disc radii obtained from fits to the energy spectra.
This result holds on all times scales tested in this study and supports the Lense-Thirring precession interpretation of type-C QPOs.
;Comment: 9 + 4 pages, 7 figures, 2 tables as appendix
Stiele, H.,Kong, A. K. H., 2024, NICER and Swift/XRT monitoring of the 2023 outburst of Swift J1727.7-1613
Utility of Photon-Counting Detector CT Myelography for the Detection of CSF-Venous Fistulas
imaging photon-counting myelography
