First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908579046359040 |
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| author | Kashyap, Unnati Maccarone, Thomas J. Pattie, Eliot C. Ng, Mason Ravi, Swati Tetarenko, Alexandra J. Cabot, Pau Bosch Marshall, Herman L. |
| author_facet | Kashyap, Unnati Maccarone, Thomas J. Pattie, Eliot C. Ng, Mason Ravi, Swati Tetarenko, Alexandra J. Cabot, Pau Bosch Marshall, Herman L. |
| contents | We report the first polarimetric results of the neutron star (NS) low-mass X-ray binary (LMXB) Z-source GX 17+2 using the Imaging X-ray Polarimetry Explorer (IXPE) and the Very Large Array (VLA). We find that the X-ray source was polarized at PD = 1.9 +/- 0.3 % (1-sigma errors) with a polarization angle of PA = 11 +/- 4 degree (1-sigma errors). Simultaneous Nuclear Spectroscopic Telescope Array (NuSTAR) observations show that the source was in the normal branch (NB) during our IXPE observations. The X-ray spectro-polarimetry results suggest a source geometry comprising an accretion disk component, a Comptonization component, and a reflection component. The VLA radio polarization study shows a PD = 2.2 +/- 0.2 % with a Faraday-corrected intrinsic polarization angle of 1 +/- 5 degree, which is an indication of the jet axis. Thus, we find the estimated X-ray PA from the source is consistent with the radio PA. We discuss the accretion geometry of the Z-source in light of our X-ray spectro-polarimetry and radio findings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_05284 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2 Kashyap, Unnati Maccarone, Thomas J. Pattie, Eliot C. Ng, Mason Ravi, Swati Tetarenko, Alexandra J. Cabot, Pau Bosch Marshall, Herman L. High Energy Astrophysical Phenomena We report the first polarimetric results of the neutron star (NS) low-mass X-ray binary (LMXB) Z-source GX 17+2 using the Imaging X-ray Polarimetry Explorer (IXPE) and the Very Large Array (VLA). We find that the X-ray source was polarized at PD = 1.9 +/- 0.3 % (1-sigma errors) with a polarization angle of PA = 11 +/- 4 degree (1-sigma errors). Simultaneous Nuclear Spectroscopic Telescope Array (NuSTAR) observations show that the source was in the normal branch (NB) during our IXPE observations. The X-ray spectro-polarimetry results suggest a source geometry comprising an accretion disk component, a Comptonization component, and a reflection component. The VLA radio polarization study shows a PD = 2.2 +/- 0.2 % with a Faraday-corrected intrinsic polarization angle of 1 +/- 5 degree, which is an indication of the jet axis. Thus, we find the estimated X-ray PA from the source is consistent with the radio PA. We discuss the accretion geometry of the Z-source in light of our X-ray spectro-polarimetry and radio findings. |
| title | First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2510.05284 |