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| मुख्य लेखकों: | , , , , , |
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| स्वरूप: | Preprint |
| प्रकाशित: |
2025
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| विषय: | |
| ऑनलाइन पहुंच: | https://arxiv.org/abs/2510.14938 |
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| _version_ | 1866912980585676800 |
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| author | Sunyaev, Rashid Khabibullin, Ildar Churazov, Eugene Gilfanov, Marat Medvedev, Pavel Sazonov, Sergey |
| author_facet | Sunyaev, Rashid Khabibullin, Ildar Churazov, Eugene Gilfanov, Marat Medvedev, Pavel Sazonov, Sergey |
| contents | The Galactic microquasar SS 433 and the radio nebula W50 surrounding it present a prototypical example of a hyper-Eddington binary system shaping its ambient interstellar medium via energetic outflows. In this paper, we present X-ray observations of the SS 433/W50 complex by the eROSITA telescope onboard the \textit{SRG} space observatory. These data provide images of the entire nebula characterized by a very large dynamic range and allow spectral analysis of the diffuse X-ray emission. In particular, these data illustrate a close connection between the thermal and non-thermal components of W50 on scales ranging from sub-parsecs, represented by narrow X-ray bright filaments, to the entire extent of $\gtrsim 100\,{\rm pc}$ of the nebula. These data also allowed us to fully characterize a pair of nearly symmetric, sharp-edged, elongated structures aligned with the orbital axis of the binary system, which lack radio counterparts but are prominent in very-high-energy gamma-ray emission. The resulting multifaceted picture of the interaction between energetic outflows and the surrounding medium paves the way for future focused multiwavelength observations and dedicated numerical simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_14938 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | X-ray panorama of the SS433/W50 complex by SRG/eROSITA Sunyaev, Rashid Khabibullin, Ildar Churazov, Eugene Gilfanov, Marat Medvedev, Pavel Sazonov, Sergey High Energy Astrophysical Phenomena Astrophysics of Galaxies The Galactic microquasar SS 433 and the radio nebula W50 surrounding it present a prototypical example of a hyper-Eddington binary system shaping its ambient interstellar medium via energetic outflows. In this paper, we present X-ray observations of the SS 433/W50 complex by the eROSITA telescope onboard the \textit{SRG} space observatory. These data provide images of the entire nebula characterized by a very large dynamic range and allow spectral analysis of the diffuse X-ray emission. In particular, these data illustrate a close connection between the thermal and non-thermal components of W50 on scales ranging from sub-parsecs, represented by narrow X-ray bright filaments, to the entire extent of $\gtrsim 100\,{\rm pc}$ of the nebula. These data also allowed us to fully characterize a pair of nearly symmetric, sharp-edged, elongated structures aligned with the orbital axis of the binary system, which lack radio counterparts but are prominent in very-high-energy gamma-ray emission. The resulting multifaceted picture of the interaction between energetic outflows and the surrounding medium paves the way for future focused multiwavelength observations and dedicated numerical simulations. |
| title | X-ray panorama of the SS433/W50 complex by SRG/eROSITA |
| topic | High Energy Astrophysical Phenomena Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2510.14938 |