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@InProceedings{StecchiniAvilDAmiBrag:2018:MaEsBl,
               author = "Stecchini, Paulo Eduardo Freire and Avila, Manuel Castro and 
                         D'Amico, Fl{\'a}vio 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 {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "A mass estimative for the black hole candidate 1e 1740.7-2942 
                         using broad band x-ray spectrum",
            booktitle = "Abstracts...",
                 year = "2018",
         organization = "Cospar Scientific Assembly, 42.",
             abstract = "The object 1E 1740.7-2942 is one of the strongest hard X-ray 
                         emitters around the Galactic Center region. It was classified as a 
                         black hole candidate due to its spectral similarities with Cyg 
                         X-1. The lack of information about its counterpart prevents the 
                         mass function f(M) of the system from being determined, since it 
                         depends on parameters usually better estimated through 
                         optical/infrared observations of the companion. In the context of 
                         alternative methods, broad band spectrum and the presence of a 
                         broadened iron line have opened the possibility of weighting black 
                         holes with only X-ray data. In this study, we gather public 
                         available data of 1E 1740.7-2942 from 3 different missions to 
                         produce a broad band spectrum. NuSTAR data suggest the presence of 
                         an iron line and a reflection component. Broad band coverage and 
                         thus better fit modeling was achieved including data from XMM and 
                         INTEGRAL. Although the observations were not taken simultaneously, 
                         their individual fits indicate that the source was in the same 
                         spectral state. Preliminarly results point to a black hole mass 
                         around 4 solar masses for 1E 1740.7-2942.",
  conference-location = "Pasadena, California",
      conference-year = "14-22 July",
             language = "en",
           targetfile = "stecchini_mass.pdf",
        urlaccessdate = "25 nov. 2020"
}


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