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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…
Accretion and Outflow in V404 Cyg
J. Casares, T. Muñoz-Darias, D. Mata Sanchez +5
We study the optical evolution of the 2015 outburst in V404 Cyg, with emphasis on the peculiar nebular phase and subsequent decay to quiescence. From the decay timescale of the Bal…
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,…
Multi-wavelength spectroscopy of the black hole candidate MAXI J1813-095 during its discovery outburst
M. Armas Padilla, T. Muñoz-Darias, J. Sánchez-Sierras +5
MAXI J1813-095 is an X-ray transient discovered during an outburst in 2018. We report on X-ray and optical observations obtained during this event, which indicate that the source i…