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Article
The UVIT telescopes on the Astrosat observatory
The UVIT telescopes are a payload package on the ISRO Astrosat observatory. They are co-aligned with three X-ray telescopes, and will operate simultaneously with them. The overall observatory is summarized, an...
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Article
Kinematics and Morphology of the Resolved Narrow Line Region in NGC 4151
A complement of HST narrow band images, STIS slitless and long-slit spectra have been employed to probe the morphology, kinematics, dynamics, and ionization structure of the near-nuclear region in NGC 4151. The i...
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Article
An imaging optical/UV monitor for X-ray astronomy observatories
The understanding of high-energy astrophysical sources often depends on observations over the entire electromagnetic spectrum. Yet, extensive multifrequency observing campaigns can consume the resources of a l...
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Article
The synthesis of close-binary light curves IV: An application to TX ursae majoris and MR Cygni
A full description is given of the theory used in light curve synthesis, for binary stars showing various degrees of interaction. For strongly interacting pairs, an iterative mutual heating calculation is intr...