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Correlated variability in the blazar 3C 454.3
E. W. Bonning, C. Bailyn, C. M. Urry +7
The blazar 3C 454.3 was revealed by the Fermi Gamma-ray Space Telescope to be in an exceptionally high flux state in July 2008. Accordingly, we performed a multi-wavelength monitor…
A New Dynamical Model for the Black Hole Binary LMC X-1
Jerome A. Orosz, Danny Steeghs, Jeffrey E. McClintock +10
We present a dynamical model of the high mass X-ray binary LMC X-1 based on high-resolution optical spectroscopy and extensive optical and near-infrared photometry. From our new op…
Broadband X-ray Spectra of GX 339-4 and the Geometry of Accreting Black Holes in the Hard State
John A. Tomsick, Emrah Kalemci, Philip Kaaret +6
A major question in the study of black hole binaries involves our understanding of the accretion geometry when the sources are in the hard state. In this state, the X-ray energy sp…
Tracing the jet contribution to the mid-IR over the 2005 outburst of GRO J1655-40 via broadband spectral modeling
S. Migliari, J. A. Tomsick, S. Markoff +6
We present new results from a multi-wavelength (radio/infrared/optical/X-ray) study of the black hole X-ray binary GRO J1655-40 during its 2005 outburst. We detected, for the first…
Multi-wavelength observations of the 2002 outburst of GX 339-4: two patterns of X-ray-optical/near-infrared behavior
Jeroen Homan, Michelle Buxton, Sera Markoff +3
(Abridged) We report on RXTE and optical/near-infrared (nIR) observations of the black hole transient GX 339-4, made over a time span of 8 months in 2002 and covering the initial r…
The 2002 Outburst of the Black-Hole X-ray Binary 4U 1543-47: Optical and Infrared Light Curves
M. M. Buxton, C. D. Bailyn
We have obtained simultaneous optical and near infrared observations of 4U 1543-47 during its 2002 outburst. The most striking feature of the outburst light curve is the secondary…