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95 papers · 2 filters
Validation of Time-Distance Helioseismology by Use of Realistic Simulations of Solar Convection
Junwei Zhao, Dali Georgobiani, Alexander G. Kosovichev +3
Recent progress in realistic simulations of solar convection have given us an unprecedented opportunity to evaluate the robustness of solar interior structures and dynamics obtaine…
Three dimensional numerical simulations of acoustic wave field in the upper convection zone of the Sun
K. V. Parchevsky, A. G. Kosovichev
Results of numerical 3D simulations of propagation of acoustic waves inside the Sun are presented. A linear 3D code which utilizes realistic OPAL equation of state was developed by…
Monitoring the Bi-Directional Relativistic Jets of the Radio Galaxy 3C 338
G. Gentile, C. Rodriguez, G. B. Taylor +4
We present the analysis of VLA and VLBA observations of the radio source 3C 338, associated with the cD galaxy NGC 6166, the central dominant galaxy of the cluster Abell 2199. The…
Magnetic Hydrogen Atmosphere Models and the Neutron Star RX J1856.5-3754
Wynn C. G. Ho, David L. Kaplan, Philip Chang +2
RX J1856.5-3754 is one of the brightest nearby isolated neutron stars, and considerable observational resources have been devoted to it. However, current models are unable to satis…
Application of an XMM-Newton EPIC Monte Carlo Technique to Analysis and Interpretation of Data for the Abell 1689, RX J0658-55 and Centaurus clusters of galaxies
K. E. Andersson, J. R. Peterson, G. M. Madejski
We propose a new Monte Carlo method to study extended X-ray sources with the European Photon Imaging Camera (EPIC) aboard {\sl XMM-Newton}. The smoothed particle inference (SPI) te…
Radiative transfer effects on Doppler measurements as sources of surface effects in sunspot seismology
S. P. Rajaguru, K. Sankarasubramanian, R. Wachter +1
We show that the use of Doppler shifts of Zeeman sensitive spectral lines to observe wavesn in sunspots is subject to measurement specific phase shifts arising from, (i) altered he…