Výsledky vyhledávání

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Spiral Galaxies' Disk Dominance and Testing MOND

Many Hubble type S galaxies have a flat rotation curve, V extending into the outer disk. The surface brightness there is too low to create V from stars of a reasonable mass-to-light ratio. To maintain a stable disk, a massive dark matter halo is usua

Externí odkaz: http://arxiv.org/abs/2404.00944

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Observations of General Relativity at strong and weak limits

Autor: Byrd, Gene, Chernin, Arthur, Teerikorpi, Pekka, Valtonen, Mauri

Einstein's General Relativity theory has been tested in many ways during the last hundred years as reviewed in this chapter. Two tests are discussed in detail in this article: the concept of a zero gravity surface, the roots of which go back to J\"ar

Externí odkaz: http://arxiv.org/abs/1411.5860

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Akademický článek

NGC 4622 : Unusual Spiral Density Waves and Calculated Disk Surface Density

Autor: Byrd, Gene, Howard, Sethanne

Publikováno v: Journal of the Washington Academy of Sciences, 2019 Oct 01. 105(3), 1-12.

Externí odkaz: https://www.jstor.org/stable/27130191

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Akademický článek

Tactile Astronomy Demos : Milky Way “Stars like Grains of Sugar” plus Ball and Sun Lunar Phases

Autor: Byrd, Gene

Publikováno v: Journal of the Washington Academy of Sciences, 2019 Apr 01. 105(1), 1-6.

Externí odkaz: https://www.jstor.org/stable/26901652

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Akademický článek

Falling through the Earth

Autor: Byrd, Gene

Publikováno v: Journal of the Washington Academy of Sciences, 2018 Oct 01. 104(3), 1-10.

Externí odkaz: https://www.jstor.org/stable/26901627

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The Ringed Spiral Galaxy NGC 4622. I. Photometry, Kinematics, and the Case for Two Strong Leading Outer Spiral Arms

Autor: Buta, Ronald J., Byrd, Gene G., Freeman, Tarsh

The intriguing nearly face-on southern ringed spiral galaxy NGC 4622, the first galaxy definitively shown to have leading spiral structure, is revisited in this paper with new images from the Hubble Space Telescope's WFPC2, together with ground-based

Externí odkaz: http://arxiv.org/abs/astro-ph/0211002

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