We present 20 epochs of optical spectroscopy obtained with the GTC-10.4m telescope across the bright discovery outburst of the black hole candidate Swift J1727...
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PublicaciónEvidence for inflows and outflows in the nearby black hole transient Swift J1727.8−162
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PublicaciónFaint X-ray Outburst in XTE J1118+480
The RXTE All-Sky monitor shows new detections of the black hole binary, XTE J1118+480, reported to be in optical outburst (ATEL #383). The source is first seen...
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PublicaciónFirst gravitational-wave burst GW150914: MASTER optical follow-up observations
The Advanced LIGO observatory recently reported the first direct detection of the gravitational waves (GWs) predicted by Einstein & Sitzungsber. We report on...
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PublicaciónFollow-up Survey for the Binary Black Hole Merger GW200224_222234 Using Subaru/HSC and GTC/OSIRIS
The LIGO/Virgo detected a gravitational wave (GW) event, named GW200224_222234 (also known as S200224ca) and classified as a binary-black hole coalescence, on...
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PublicaciónFuriously fast and red: sub-second optical flaring in V404 Cyg during the 2015 outburst peak
We present observations of rapid (sub-second) optical flux variability in V404 Cyg during its 2015 June outburst. Simultaneous three-band observations with the...
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PublicaciónGalactic Black Hole Transient H1743-322 in transition to the hard state
Galactic black hole transient H1743-322 has been in outburst since UT 2009 May 26, (ATELs #2058, #2062). The RXTE PCA count rate has been dropping since 2009...
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PublicaciónGamma-ray observations of MAXI J1820+070 during the 2018 outburst
MAXI J1820+070 is a low-mass X-ray binary with a black hole (BH) as a compact object. This binary underwent an exceptionally bright X-ray outburst from 2018...
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PublicaciónGX 339-4 Approaching Quiescence ?
The black hole X-ray binary (BHXB) GX 339-4 continues to fade in the optical, and has now reached its faintest optical flux since (at least) the start of its...
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NoticiaHallan un agujero negro que rota extremadamente inclinado respecto a su órbita
Descubren un agujero negro que desafía los modelos teóricos actuales de formación de este tipo de objetos compactos, utilizando telescopios instalados en el...