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Dynamical confirmation of a black hole in MAXI J1820+070
M. A. P. Torres, J. Casares, F. Jiménez-Ibarra +4
We present time-resolved 10.4-m GTC and 4.2-m WHT intermediate resolution spectroscopy of the X-ray transient MAXI J1820+070 (=ASASSN-18ey) obtained during its decline to the quies…
An equatorial outflow in the black hole optical dipper Swift J1357.2-0933
F. Jiménez-Ibarra, T. Muñoz-Darias, J. Casares +2
We present high-time resolution optical spectroscopy and imaging of the black hole transient Swift J1357.2-0933 during its 2017 outburst. The light curves show recurrent dips resem…
Hard-state accretion disk winds from black holes: the revealing case of MAXI J1820+070
T. Muñoz-Darias, F. Jiménez-Ibarra, G. Panizo-Espinar +16
We report on a detailed optical spectroscopic follow-up of the black hole transient MAXI J1820+070 (ASASSN-18ey). The observations cover the main part of the X-ray binary outburst,…