X-ray and radio polarimetry of the neutron star low mass X-ray binary GX 13+1
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866909729328988160 |
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| author | Kashyap, Unnati Maccarone, Thomas J. Pattie, Eliot C. Ng, Mason Ravi, Swati Marshall, Herman L. |
| author_facet | Kashyap, Unnati Maccarone, Thomas J. Pattie, Eliot C. Ng, Mason Ravi, Swati Marshall, Herman L. |
| contents | We report the X-ray and radio polarization study of the neutron star (NS) low-mass X-ray binary (LMXB) GX 13+1 using the Imaging X-ray Polarimetry Explorer (IXPE) and Very Large Array (VLA). Simultaneous Neutron Star Interior Composition Explorer (NICER) observations show that the source was in parts of the Z state during our IXPE observations, exhibiting moderate changes in the hardness intensity diagram. The source exhibits X-ray dips in the light curve along with hints of polarization swings between the dip and non-dip states. The X-ray spectro-polarimetry results suggest a source geometry comprising an accretion disk component representing the softer disk emission, along with a blackbody representing the harder emission from the boundary layer (BL) or a spreading layer (SL). We investigate the geometry of GX 13+1 by considering our X-ray and radio polarization findings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_05763 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | X-ray and radio polarimetry of the neutron star low mass X-ray binary GX 13+1 Kashyap, Unnati Maccarone, Thomas J. Pattie, Eliot C. Ng, Mason Ravi, Swati Marshall, Herman L. High Energy Astrophysical Phenomena We report the X-ray and radio polarization study of the neutron star (NS) low-mass X-ray binary (LMXB) GX 13+1 using the Imaging X-ray Polarimetry Explorer (IXPE) and Very Large Array (VLA). Simultaneous Neutron Star Interior Composition Explorer (NICER) observations show that the source was in parts of the Z state during our IXPE observations, exhibiting moderate changes in the hardness intensity diagram. The source exhibits X-ray dips in the light curve along with hints of polarization swings between the dip and non-dip states. The X-ray spectro-polarimetry results suggest a source geometry comprising an accretion disk component representing the softer disk emission, along with a blackbody representing the harder emission from the boundary layer (BL) or a spreading layer (SL). We investigate the geometry of GX 13+1 by considering our X-ray and radio polarization findings. |
| title | X-ray and radio polarimetry of the neutron star low mass X-ray binary GX 13+1 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2508.05763 |