Systematic study of magnetar outbursts
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http://hdl.handle.net/10045/75490
Títol: | Systematic study of magnetar outbursts |
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Autors: | Coti Zelati, Francesco | Rea, Nanda | Pons, José A. | Campana, Sergio | Esposito, Paolo |
Grups d'investigació o GITE: | Astrofísica Relativista |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Física Aplicada |
Paraules clau: | Methods: data analysis | Methods: observational | Techniques: spectroscopic | Stars: magnetars | Stars: magnetic field | X-rays: stars |
Àrees de coneixement: | Astronomía y Astrofísica |
Data de publicació: | 11-de febrer-2018 |
Editor: | Oxford University Press |
Citació bibliogràfica: | Monthly Notices of the Royal Astronomical Society. 2018, 474(1): 961-1017. doi:10.1093/mnras/stx2679 |
Resum: | We present the results of the systematic study of all magnetar outbursts observed to date, through a reanalysis of data acquired in about 1100 X-ray observations. We track the temporal evolution of the outbursts’ soft X-ray spectral properties and the luminosities of the single spectral components as well as of the total emission. We model empirically all outburst light curves, and estimate the characteristic decay time-scales as well as the energetics involved. We investigate the link between different parameters (e.g. the luminosity at the peak of the outburst and in quiescence, the maximum luminosity increase, the decay time-scale and energy of the outburst, the neutron star surface dipolar magnetic field and characteristic age, etc.), and unveil several correlations among these quantities. We discuss our results in the context of the internal crustal heating and twisted bundle models for magnetar outbursts. This study is complemented by the Magnetar Outburst Online Catalogue (http://magnetars.ice.csic.es), an interactive data base where the user can plot any combination of the parameters derived in this work, and download all data. |
Patrocinadors: | FCZ, NR and PE acknowledge funding in the framework of the Netherlands Organization for Scientific Research (NWO) Vidi award number 639.042.321 (PI: N. Rea) and the European COST Action MP1304 (NewCOMPSTAR). FCZ and NR are also supported by grants AYA2015-71042-P and SGR2014-1073. JAP acknowledges support by grants AYA2015-66899-C2-2-P and PROMETEOII-2014-069. |
URI: | http://hdl.handle.net/10045/75490 |
ISSN: | 0035-8711 (Print) | 1365-2966 (Online) |
DOI: | 10.1093/mnras/stx2679 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.1093/mnras/stx2679 |
Apareix a la col·lecció: | INV - Astrofísica Relativista - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2018_Coti-Zelati_etal_MNRAS.pdf | 7,45 MB | Adobe PDF | Obrir Vista prèvia | |
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