@Article{StecchiniCasJabD’ABra:2017:TaSwIN,
               author = "Stecchini, Paulo Eduardo Freire and Castro, Manuel and Jablonski, 
                         Francisco Jos{\'e} 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)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Tandem swift and INTEGRAL data to revisit the orbital and 
                         superorbital periods of 1E1740.7-2942",
              journal = "Astrophysical Journal Letters",
                 year = "2017",
               volume = "843",
               number = "1",
             keywords = "July.",
             abstract = "The black hole candidate 1E 1740.7-2942 is one of the strongest 
                         hard X-ray sources in the Galactic Center region. No counterparts 
                         in longer wavelengths have been identified for this object yet. 
                         The presence of characteristic timing signatures in the flux 
                         history of X-ray sources has been shown to be an important 
                         diagnostic tool for the properties of these systems. Using 
                         simultaneous data from NASA's Swift and ESA's INTEGRAL missions, 
                         we have found two periodic signatures at 12.61 +/- 0.06 days and 
                         171.1 +/- 3.0 days in long-term hard X-ray light curves of 1E 
                         1740.7-2942. We interpret those as the orbital and superorbital 
                         periods of the object, respectively. The reported orbital period 
                         is in good agreement with previous studies of 1E 1740.7-2942 using 
                         NASA's RXTE data. We present here the first firm evidence of a 
                         superorbital period for 1E 1740.7-2942, which has important 
                         implications for the nature of the binary system.",
                  doi = "10.3847/2041-8213/aa7942",
                  url = "http://dx.doi.org/10.3847/2041-8213/aa7942",
                 issn = "2041-8205 and 2041-8213",
             language = "en",
           targetfile = "stecchini_tandem.pdf",
        urlaccessdate = "27 abr. 2024"
}