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Accretion Onto Weakly Magnetized Neutron Stars: Polarization Theory and Its Application to X-Ray Burster GX 13+1
Tekijät: Bobrikova, Anna; Forsblom, Sofia V.
Kustantaja: WILEY-V C H VERLAG GMBH
Kustannuspaikka: WEINHEIM
Julkaisuvuosi: 2025
Journal: Astronomical Notes / Astronomische Nachrichten
Tietokannassa oleva lehden nimi: ASTRONOMISCHE NACHRICHTEN
Lehden akronyymi: ASTRON NACHR
Artikkelin numero: e20240128
Vuosikerta: 346
Numero: 1
Sivujen määrä: 7
ISSN: 0004-6337
eISSN: 1521-3994
DOI: https://doi.org/10.1002/asna.20240128
Verkko-osoite: https://onlinelibrary.wiley.com/doi/10.1002/asna.20240128
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/477932579
Observations show that the x-ray emission of the accreting weakly magnetized neutron stars (WMNSs) is polarized. In this article, we summarize the analytical models for the polarized emission of various components of the WMNSs. We introduce a missing theoretical model, where we assume the emission comes from the spreading layer, the extension of the boundary layer between the accretion disk and the neutron star. We show how these models and the results of the simulations provide new insights into the x-ray polarization from weakly magnetized neutron stars observed with the imaging x-ray polarimetry explorer (IXPE). We specifically focus on the most peculiar case of the X-ray burster GX 13+1.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
Julkaisussa olevat rahoitustiedot:
This work was supported by Research Council of Finland, 333112, Suomen Kulttuurirahasto, 00240328.
