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- Central European Institute of TechnologyCZ145 papers
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- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ22 papers
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4 papers · 1 filter
Descriptional Complexity of Three-Nonterminal Scattered Context Grammars: An Improvement
Tomáš Masopust, Alexander Meduna
Recently, it has been shown that every recursively enumerable language can be generated by a scattered context grammar with no more than three nonterminals. However, in that constr…
The 2008 August 1 Eclipse Solar-Minimum Corona Unraveled
Jay M. Pasachoff, Vojtech Rusin, Miloslav Druckmuller +3
We discuss results stemming from observations of the white-light and [Fe XIV] emission corona during the total eclipse of the Sun of 2008 August 1, in Mongolia (Altaj region) and i…
Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae
Taichi Kato, Akira Imada, Makoto Uemura +60
We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly obtained data and past publications. In many systems, the evolution of superhum…
Photometry of Three Superoutbursts of the SU UMa-type Dwarf Nova, SW Ursae Majoris
Yuichi Soejima, Daisaku Nogami, Taichi Kato +16
We investigated the superhump evolution, analysing optical photometric observations of the 2000 February-March, the 2002 October-November, and the 2006 September superoutbursts of…