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dc.date.accessioned 2021-10-26T14:43:32Z
dc.date.available 2021-10-26T14:43:32Z
dc.date.issued 2013-03
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/127272
dc.description.abstract We analysed the complete set of bursts from the neutron star low-mass X-ray binary 4U 1820-30 detected with the ossi X-ray Timing Explorer ( RXTE). We found that all are photospheric radius expansion bursts, and have similar duration, peak flux and fluence. From the analysis of time-resolved spectra during the cooling phase of the bursts, we found that the relation between the bolometric flux and the temperature is very different from the canonical F ∝ T⁴ relation which is expected if the apparent emitting area on the surface of the neutron star remains constant. The flux-temperature relation can be fitted using a broken power law, with indices ν₁ = 2.0 ± 0.3 and ν₂ = 5.72 ± 0.06. The departure from the F ∝ T⁴ relation during the cooling phase of the X-ray bursts in 4U 1820-30 could be due to changes in the emitting area of the neutron star while the atmosphere cools down, variations in the colour-correction factor due to chemical evolution, or the presence of a source of heat, e.g. residual hydrogen nuclear burning, playing an important role when the burst emission ceases. en
dc.format.extent 3266-3271 es
dc.language en es
dc.subject stars: individual: 4U 1820−30 es
dc.subject stars: neutron es
dc.subject X-rays: binaries es
dc.subject X-rays: bursts es
dc.title The cooling phase of Type I X-ray bursts observed with RXTE in 4U 1820−30 does not follow the canonical F ∝ T⁴ relation en
dc.type Articulo es
sedici.identifier.other arXiv:1301.1035 es
sedici.identifier.other doi:10.1093/mnras/sts583 es
sedici.identifier.issn 0035-8711 es
sedici.identifier.issn 1365-2966 es
sedici.creator.person García, Federico es
sedici.creator.person Zhang, Guobao es
sedici.creator.person Méndez, Mariano R. es
sedici.subject.materias Astronomía es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Astronómicas y Geofísicas es
mods.originInfo.place Instituto Argentino de Radioastronomía es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Monthly Notices of the Royal Astronomical Society es
sedici.relation.journalVolumeAndIssue vol. 429, no. 4 es

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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)