Heyl, J;
Taverna, R;
Turolla, R;
Israel, GL;
Ng, M;
Kırmızıbayrak, D;
González-Caniulef, D;
... Wu, K; + view all
(2024)
The detection of polarized X-ray emission from the magnetar 1E 2259+586.
Monthly Notices of the Royal Astronomical Society
, 527
(4)
pp. 12219-12231.
10.1093/mnras/stad3680.
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Abstract
We report on IXPE, NICER, and XMM–Newton observations of the magnetar 1E 2259+586. We find that the source is significantly polarized at about or above 20 per cent for all phases except for the secondary peak where it is more weakly polarized. The polarization degree is strongest during the primary minimum which is also the phase where an absorption feature has been identified previously. The polarization angle of the photons are consistent with a rotating vector model with a mode switch between the primary minimum and the rest of the rotation of the neutron star. We propose a scenario in which the emission at the source is weakly polarized (as in a condensed surface) and, as the radiation passes through a plasma arch, resonant cyclotron scattering off of protons produces the observed polarized radiation. This confirms the magnetar nature of the source with a surface field greater than about 1015 G.
| Type: | Article |
|---|---|
| Title: | The detection of polarized X-ray emission from the magnetar 1E 2259+586 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stad3680 |
| Publisher version: | http://dx.doi.org/10.1093/mnras/stad3680 |
| Language: | English |
| Additional information: | © The Author(s) 2023. Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | polarization, techniques: polarimetric, stars: magnetars, pulsars: individual: 1E 2259+586 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10186701 |
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