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55 papers · 1 filter
Power spectra of black holes and neutron stars as a probe of hydrodynamical structure of the source. Diffusion theory and its application to Cyg X-1 and Cyg X-2 X-ray observations
Lev Titarchuk, Nikolai Shaposhnikov, Vadim Arefiev
We present a model of Fourier Power Density Spectrum (PDS) formation in accretion powered X-ray binary systems derived from the first principles of the diffusion theory. Timing pro…
Early Ultraviolet, Optical and X-Ray Observations of the Type IIP SN 2005cs in M51 with Swift
Peter J. Brown, Luc Dessart, Stephen T. Holland +14
We report early photospheric-phase observations of the Type IIP Supernova (SN) 2005cs obtained by Swift's Ultraviolet-Optical and X-Ray Telescopes. Observations started within two…
Binary black hole late inspiral: Simulations for gravitational wave observations
John G. Baker, Sean T. McWilliams, James R. van Meter +4
Coalescing binary black hole mergers are expected to be the strongest gravitational wave sources for ground-based interferometers, such as the LIGO, VIRGO, and GEO600, as well as t…
Correlation between X-ray Lightcurve Shape and Radio Arrival Time in the Vela Pulsar
A. Lommen, J. Donovan, C. Gwinn +6
We report the results of simultaneous observations of the Vela pulsar in X-rays and radio from the RXTE satellite and the Mount Pleasant Radio Observatory in Tasmania. We sought co…
Exploring Broadband GRB Behavior During gamma-ray Emission
S. A. Yost, H. F. Swan, E. S. Rykoff +44
The robotic ROTSE-III telescope network detected prompt optical emission contemporaneous with the gamma-ray emission of Swift events GRB051109A and GRB051111. Both datasets have co…
Swift Discovery of Gamma-Ray Bursts without Jet Break Feature in their X-Ray Afterglows
G. Sato, R. Yamazaki, K. Ioka +16
We analyze Swift gamma-ray bursts (GRBs) and X-ray afterglows for three GRBs with spectroscopic redshift determinations -- GRB 050401, XRF 050416a, and GRB 050525a. We find that th…