2001/05/07 by R. K. Jain, Raj K. Jain, C. D. Bailyn +7 · 3 citations
Physics and Astronomy · #Accretion (finance) #Accretion disc #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Black hole (networking) #Light curve #Primary (astronomy) #Pulsars and Gravitational Waves Research #Sky #astro-ph
paper · pdf · doi:10.1086/321700
12 pages, 3 figs, accepted for publications in ApJ Letters
arxiv created 2001/05/07 · openalex publication_date 2001/06/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report optical, infrared, and X-ray light curves for the outburst, in 2000, of the black hole candidate XTE J1550-564. We find that the start of the outburst in the H and V bands precedes that seen in the Rossi X-Ray Timing Explorer All-Sky Monitor by 11.5 ± 0.9 and 8.8 ± 0.6 days, respectively; a similar delay has been observed in two other systems. About 50 days after the primary maxima in the VIH light curves, we find secondary maxima, most prominently in H . This secondary peak is absent in the X-ray light curve but coincides with a transition to the low/hard state. We suggest that this secondary peak may be due to nonthermal emission associated with the formation of a jet.