Accretion properties of soft X-ray transient XTE J1856+053 during its 2023 Outburst
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866911968879706112 |
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| author | Chatterjee, Debjit Jana, Arghajit Chang, Hsiang-Kuang |
| author_facet | Chatterjee, Debjit Jana, Arghajit Chang, Hsiang-Kuang |
| contents | Soft X-ray transients are a subclass of the low mass X-ray binaries that occasionally show a sudden rise in their soft X-ray luminosity; otherwise, they remain in an extremely faint state. We investigate the accretion properties of the soft X-ray transient XTE J1856+053 during its 2023 outburst obtained by NICER and NuSTAR data in July. We present detailed results on the timing and spectral analysis of the X-ray emission during the outburst. The power spectral density shows no quasi-periodic oscillation features. The source's spectrum on July 19 can be well-fitted with a multi-color blackbody component, a power-law component, and a reflection component with a broadened iron emission line. NICER spectra can be well-fitted by considering a combination of a blackbody and a power-law. The source exhibits a transition within just five days from a soft state to an intermediate state during the outburst decline phase. The inner accretion disk has a low inclination angle ($\sim18^\circ$). The spectral analysis also suggests a high-spin ($a>0.9$) BH as the central accreting object. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_18549 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Accretion properties of soft X-ray transient XTE J1856+053 during its 2023 Outburst Chatterjee, Debjit Jana, Arghajit Chang, Hsiang-Kuang High Energy Astrophysical Phenomena Astrophysics of Galaxies Soft X-ray transients are a subclass of the low mass X-ray binaries that occasionally show a sudden rise in their soft X-ray luminosity; otherwise, they remain in an extremely faint state. We investigate the accretion properties of the soft X-ray transient XTE J1856+053 during its 2023 outburst obtained by NICER and NuSTAR data in July. We present detailed results on the timing and spectral analysis of the X-ray emission during the outburst. The power spectral density shows no quasi-periodic oscillation features. The source's spectrum on July 19 can be well-fitted with a multi-color blackbody component, a power-law component, and a reflection component with a broadened iron emission line. NICER spectra can be well-fitted by considering a combination of a blackbody and a power-law. The source exhibits a transition within just five days from a soft state to an intermediate state during the outburst decline phase. The inner accretion disk has a low inclination angle ($\sim18^\circ$). The spectral analysis also suggests a high-spin ($a>0.9$) BH as the central accreting object. |
| title | Accretion properties of soft X-ray transient XTE J1856+053 during its 2023 Outburst |
| topic | High Energy Astrophysical Phenomena Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2407.18549 |