@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 = "27 abr. 2024"
}