Radiation Signatures of Electron Acceleration in the Decelerating Jet of MAXI J1348-630
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866917984375668736 |
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| author | Sarath, Aishwarya Boettcher, Markus |
| author_facet | Sarath, Aishwarya Boettcher, Markus |
| contents | A discrete jet component (blob) ejection and its subsequent deceleration was observed in the 2019/2020 outburst in the low-mass X-ray binary MAXI J1348-630. A first kinematic analysis of the deceleration due to an abrupt transition from an evacuated cavity to the interstellar medium suggested a kinetic energy exceeding 1046 erg, surpassing estimates of the available total ejection energy. However, incorporating a transition layer with exponential density growth between the cavity and interstellar medium recently enabled a kinematic analysis with much more realistic energy requirements of approximately $10^{44}$ erg. Here, we study the expected radiative signatures of electrons accelerated within the decelerating blob by introducing a model akin to the relativistic blast wave model for gamma-ray bursts, considering radiative energy losses and radiation drag, to simulate the deceleration of a relativistically moving plasmoid. This model yields snap-shot spectral energy distributions and multi-wavelength light curves from synchrotron and Synchrotron-Self-Compton (SSC) emission. Notably, the synchrotron emission peaks in the X-rays, and the predicted Radio and X-ray light curves closely resemble the observed ones during the jet decleration phase following the outburst in 2019/2020. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_09497 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Radiation Signatures of Electron Acceleration in the Decelerating Jet of MAXI J1348-630 Sarath, Aishwarya Boettcher, Markus High Energy Astrophysical Phenomena A discrete jet component (blob) ejection and its subsequent deceleration was observed in the 2019/2020 outburst in the low-mass X-ray binary MAXI J1348-630. A first kinematic analysis of the deceleration due to an abrupt transition from an evacuated cavity to the interstellar medium suggested a kinetic energy exceeding 1046 erg, surpassing estimates of the available total ejection energy. However, incorporating a transition layer with exponential density growth between the cavity and interstellar medium recently enabled a kinematic analysis with much more realistic energy requirements of approximately $10^{44}$ erg. Here, we study the expected radiative signatures of electrons accelerated within the decelerating blob by introducing a model akin to the relativistic blast wave model for gamma-ray bursts, considering radiative energy losses and radiation drag, to simulate the deceleration of a relativistically moving plasmoid. This model yields snap-shot spectral energy distributions and multi-wavelength light curves from synchrotron and Synchrotron-Self-Compton (SSC) emission. Notably, the synchrotron emission peaks in the X-rays, and the predicted Radio and X-ray light curves closely resemble the observed ones during the jet decleration phase following the outburst in 2019/2020. |
| title | Radiation Signatures of Electron Acceleration in the Decelerating Jet of MAXI J1348-630 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2504.09497 |