@article{cee8894daf394610b8e5a5c64fcd2a9e,
title = "Modelling the compact jet in MAXI J1836-194 with disc-driven shocks",
abstract = "The black hole candidate MAXI J1836-194 was discovered in 2011 when it went into an outburst, and was the subject of numerous, quasi-simultaneous, multi-wavelength observations in the radio, infrared, optical, and X-rays. In this paper, we model its multi-wavelength radio to optical spectral energy distributions (SEDs) with an internal shock jet model (ISHEM; Malzac 2014). The jet emission is modelled on five dates of the outburst, during which the source is in the hard and hard intermediate X-ray spectral states. The model assumes that fluctuations of the jet velocity are driven by the variability in the accretion flow which is traced by the observed X-ray timing properties of the source. While the global shape of the SED is well reproduced by this model for all the studied observations, the variations in bolometric flux and typical energies require at least two parameters to evolve during the outburst. Here, we investigate variations of the jet power and mean Lorentz factor, which are both found to increase with the source luminosity. Our results are compatible with the evolution of the jet Lorentz factor reported in earlier studies of this source. However, due to the large degeneracy of the parameters of the ISHEM model, our proposed scenario is not unique.",
keywords = "Accretion, Accretion discs, Black hole physics, Relativistic processes, Shock waves, X-rays: binaries",
author = "M. P{\'e}ault and J. Malzac and M. Coriat and Russell, {T. D.} and Koljonen, {K. I.I.} and R. Belmont and S. Corbel and S. Drappeau and J. Ferreira and Petrucci, {P. O.} and J. Rodriguez and Russell, {D. M.}",
note = "Funding Information: This work is part of the CHAOS project ANR-12-BS05-0009 supported by the French Research National Agency (http://www.chaos-project.fr). It was made possible thanks to the support from the Programme National Hautes Energies (PNHE) in France and from the OCEVU Labex (ANR-11-LABX-0060) and the A∗MIDEX project (ANR-11-IDEX-0001-02) funded by the Investissement d{\textquoteright}Avenir French government program managed by the Agence Nationale de la Recherche (ANR). This research has made use of data obtained from the High Energy Astrophysics Science Archive Research center (HEASARC), provided by NASA{\textquoteright}s Goddard Space Flight Center. St{\'e}phane Corbel and Jerome Rodriguez acknowledge financial support from the UnivEarthS Labex program of Sorbonne Paris Cit{\'e} (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02). Thomas D. Russell acknowledges support from the Netherlands Organisation for Scientific Research (NWO) Veni Fellowship, grant number 639.041.646. Funding Information: This work is part of the CHAOS project ANR-12-BS05-0009 supported by the French Research National Agency (http://www.chaosproject.fr). It was made possible thanks to the support from the Pro-gramme National Hautes Energies (PNHE) in France and from the OCEVU Labex (ANR-11-LABX-0060) and the A∗MIDEX project (ANR-11-IDEX-0001-02) funded by the Investissement d'Avenir French government program managed by the Agence Nationale de la Recherche (ANR). This research has made use of data obtained from the High Energy Astrophysics Science Archive Research center (HEASARC), provided by NASA's Goddard Space Flight Center. St{\'e}phane Corbel and Jerome Rodriguez acknowledge financial support from the UnivEarthS Labex program of Sorbonne Paris Cit{\'e} (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02). Thomas D. Russell acknowledges support from the Netherlands Organisation for Scientific Research (NWO) Veni Fellowship, grant number 639.041.646. Publisher Copyright: {\textcopyright} 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.",
year = "2019",
month = jan,
day = "11",
doi = "10.1093/mnras/sty2796",
language = "English (US)",
volume = "482",
pages = "2447--2458",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",
}