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@Article{StecchiniDAmJabCasBra:2020:CoSpIn,
               author = "Stecchini, Paulo Eduardo Freire and D'Amico, Fl{\'a}vio and 
                         Jablonski, Francisco Jos{\'e} and Castro, M. and Braga, 
                         Jo{\~a}o",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Estadual de Campinas 
                         (UNICAMP)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Broadband X-ray analysis of 1E1740.7-2942: constraints on spin, 
                         inclination, and a tentative black hole mass",
              journal = "Monthly Notices of the Royal Astronomical Society",
                 year = "2020",
               volume = "493",
               number = "2",
                pages = "2694--2705",
                month = "Apr.",
             keywords = "accretion, accretion discs, black hole physics, X-rays: binaries, 
                         X-rays: individual: 1E 1740.7, 2942.",
             abstract = "1E 1740.7-2942 is one of the strongest hard X-ray emitters in the 
                         Galactic Centre region, believed to be a black hole in a high-mass 
                         X-ray binary system. Although extensively studied in X-rays, many 
                         aspects about the underlying nature of the system are still 
                         unknown. For example, X-ray data analyses of 1E1740.7-2942 to date 
                         have not yet unveiled the signature of a reflection component, 
                         whose modelling could be used to estimate parameters such as the 
                         spin of the black hole and inclination of the disc. We report here 
                         on the determination of these parameters from the analysis of the 
                         reflection component present in a public NuSTAR observation which 
                         has not been subject to any previous study. We include XMM-Newton 
                         and INTEGRAL data to build a combined spectrum, enabling a joint 
                         analysis of both the disc and comptonization components. Results 
                         point to a relatively high inclination disc greater than or 
                         similar to 50 degrees (3 a) and a near-maximum speed rotating 
                         black hole. The former is in agreement with a previous radio study 
                         and the latter is reported here for the first time. Lastly, we 
                         follow the methodology of recent efforts to weigh black holes with 
                         only X-ray spectra and find results that suggest a black hole mass 
                         of about 5 M-circle dot for 1E 1740.7-2942.",
                  doi = "10.1093/mnras/staa417",
                  url = "http://dx.doi.org/10.1093/mnras/staa417",
                 issn = "0035-8711 and 1365-2966",
             language = "en",
           targetfile = "stecchini_broadband.pdf",
        urlaccessdate = "17 jan. 2021"
}


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