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Article Dans Une Revue Astrophys.J.Lett. Année : 2020

Relativistic X-ray jets from the black hole X-ray binary MAXI J1820+070

Résumé

The black hole MAXI J1820+070 was discovered during its 2018 outburst and was extensively monitored across the electromagnetic spectrum. Following the detection of relativistic radio jets, we obtained four Chandra X-ray observations taken between 2018 November and 2019 June, along with radio observations conducted with the Very Large Array and MeerKAT arrays. We report the discovery of X-ray sources associated with the radio jets moving at relativistic velocities with a possible deceleration at late times. The broadband spectra of the jets are consistent with synchrotron radiation from particles accelerated up to very high energies (>10 TeV) by shocks produced by the jets interacting with the interstellar medium. The minimal internal energy estimated from the X-ray observations for the jets is ∼1041 erg, significantly larger than the energy calculated from the radio flare alone, suggesting most of the energy is possibly not radiated at small scales but released through late-time interactions.
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hal-02564697 , version 1 (12-06-2020)

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Mathilde Espinasse, Stéphane Corbel, Philip Kaaret, Evangelia Tremou, Giulia Migliori, et al.. Relativistic X-ray jets from the black hole X-ray binary MAXI J1820+070. Astrophys.J.Lett., 2020, 895 (2), pp.L31. ⟨10.3847/2041-8213/ab88b6⟩. ⟨hal-02564697⟩
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