Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-26T20:25:31.108Z Has data issue: false hasContentIssue false
  • English
  • Français

The new magnetar SGR J1830–0645 in outburst

Published online by Cambridge University Press:  27 February 2023

Francesco Coti Zelati Open the ORCID record for Francesco Coti Zelati [Opens in a new window]
Francesco Coti Zelati*
Affiliation:
Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans s/n, E-08193, Barcelona, Spain email [email protected] Institut d’Estudis Espacials de Catalunya (IEEC), Carrer Gran Capità 2–4, E-08034 Barcelona, Spain
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The magnetar SGR J1830–0645 was discovered in outburst in October 2020. We studied its X-ray properties during the first month of the outburst using XMM–Newton, NuSTAR and Swift observations. The shape and amplitude of the pulse profile varied significantly with energy. The broadband spectrum was well described using two absorbed blackbody components plus a faint power law component at high energies. Phase-resolved spectral analysis of the data suggests that the emission could be attributed to thermal photons from a single heated region with a complex shape on the star surface undergoing resonant Compton scattering on charged particles located in the magnetosphere. Modelling the evolutionary path of the magnetar with our magneto-thermal evolutionary codes indicates that SGR J1830 was born ≈23 kyr ago with a dipolar magnetic field of ∼1015 G, slightly larger than the current value.

Keywords

stars: magnetic fields(stars:) pulsars: generalX-rays: starsX-rays: bursts
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S363: Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution , June 2020 , pp. 293 - 296
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

References

Albano, A., Turolla, R., Israel, G. L., et al. 2010, ApJ, 722, 788 CrossRefGoogle Scholar
Coti Zelati, F., Rea, N., Pons, J. A., et al. 2018, MNRAS, 474, 961 CrossRefGoogle Scholar
Coti Zelati, F., Borghese, A., Israel, G. L., et al. 2021, ApJ (Letters), 907, L34 CrossRefGoogle Scholar
De Grandis, D., Turolla, R., Wood, T. S., et al. 2020, ApJ, 903, 40 CrossRefGoogle Scholar
Esposito, P., Rea, N., & Israel, G. L. 2021, Astrophysics and Space Science Library, 461, 97 CrossRefGoogle Scholar
Kaspi, V. M. & Beloborodov, A. M. 2017, ARAA, 55, 261 CrossRefGoogle Scholar
Vigan‘o, D., Garcia-Garcia, A., Pons, J. A., et al. 2021, Computer Physics Communications, 265, 108001 CrossRefGoogle Scholar
Younes, G., Lander, S. K., Baring, M. G., et al. 2022, ApJ (Letters), 924, L27 CrossRefGoogle Scholar