Results 221 to 230 of about 144,949 (239)
Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Our Galaxy. [PDF]
Klaassen P+40 more
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Pulsed-field- vs. cryoballoon-based pulmonary vein isolation: lessons from repeat procedures. [PDF]
Lemoine MD+15 more
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A spherical vector-based adaptive evolutionary particle swarm optimization for UAV path planning under threat conditions. [PDF]
Liu Y, Zhang H, Zheng H, Li Q, Tian Q.
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A Metric for the Entropic Purpose of a System. [PDF]
Parker MC, Jeynes C, Walker SD.
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ERGA-BGE Reference Genome ofGluvia dorsalis: An Endemic Sun Spider from Iberian Arid Regions
Lozano-Fernandez J+14 more
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The Rotation of Spiral Galaxies [PDF]
There is accumulating evidence that as much as 90 percent of the mass of the universe is nonluminous and is clumped, halo-like, around individual galaxies. The gravitational force of this dark matter is presumed to be responsible for the high rotational velocities of stars and gas in the disks of spiral galaxies.
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The photographic images of a carefully selected sample of about 16,000 galaxies have been digitized, and an extensive set of photometric parameters has been determined. These data allow a reanalysis of the effective transparency using the measured surface brightness profiles for much larger, more strictly defined samples. Several tests provide evidence
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Proceedings of the International Astronomical Union, 2019
AbstractThe venerable problem of what causes the spiral features in disk galaxies is nearing a solution. In previous work, we have shown that transient spirals in simulations result from the superposition of a few coherent waves that have many properties of modes.
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AbstractThe venerable problem of what causes the spiral features in disk galaxies is nearing a solution. In previous work, we have shown that transient spirals in simulations result from the superposition of a few coherent waves that have many properties of modes.
openaire +2 more sources