Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Robert E. Criss"'
Autor:
Robert E. Criss
Publikováno v:
Water, Vol 16, Iss 8, p 1099 (2024)
The dynamic behavior of flood waves on rivers is essential to flood prediction. Natural flood waves are complex due to tributary inputs, rainfall variations, and overbank flows, so this study examines hydropower dam releases, which are simpler to ana
Externí odkaz:
https://doaj.org/article/850e736344094442b7bbae71ed7e095f
Publikováno v:
Galaxies, Vol 11, Iss 5, p 100 (2023)
Available inventories of baryonic mass in the universe are based largely on galactic data and empirical calculations made >20 years ago. Values falling below cosmological estimates underlie proposals that certain rarified gassy regions could have ext
Externí odkaz:
https://doaj.org/article/5fd22d4f41504f9ca624d674054ed53d
Autor:
Robert E. Criss, Anne M. Hofmeister
Publikováno v:
Symmetry, Vol 15, Iss 3, p 641 (2023)
Kepler’s discoveries were permitted by his remarkable insight to place the Sun at the focus of an elliptical planetary orbit. This coordinate system reduces a 2-dimensional orbit to a single spatial dimension. We consider an alternative coordinate
Externí odkaz:
https://doaj.org/article/c4b48a99eb074a4ab542beefd3cdb203
Publikováno v:
Materials, Vol 15, Iss 7, p 2638 (2022)
Available data on insulating, semiconducting, and metallic solids verify our new model that incorporates steady-state heat flow into a macroscopic, thermodynamic description of solids, with agreement being best for isotropic examples. Our model is ba
Externí odkaz:
https://doaj.org/article/0b4edee39400499db8685867e6c5d83d
Autor:
Robert E. Criss, Anne M. Hofmeister
Publikováno v:
Symmetry, Vol 13, Iss 8, p 1519 (2021)
Empirical laws proposed for the decline in star spin with time have heretofore been tested using ambiguous fitting models. We develop an analytical inverse model that uses histogram data to unequivocally determine the physical law governing how dwarf
Externí odkaz:
https://doaj.org/article/9a9748f89bac423d95ed743da8865e1b
Autor:
Anne M. Hofmeister, Robert E. Criss
Publikováno v:
Galaxies, Vol 8, Iss 3, p 54 (2020)
This Special Issue was motivated by the disparate explanations of galactic dynamics promulgated by different philosophical camps [...]
Externí odkaz:
https://doaj.org/article/11d84363a7844c9697e9314a71413edd
Autor:
Anne M. Hofmeister, Robert E. Criss
Publikováno v:
Galaxies, Vol 8, Iss 2, p 47 (2020)
Proposed explanations of galactic rotation curves (RC = tangential velocity vs. equatorial radius, determined from Doppler measurements) involve dramatically different assumptions. A dominant, original camp invoked huge amounts of unknown, non-baryon
Externí odkaz:
https://doaj.org/article/1cae4efb09ac4896b5025c656992c39e
Density Profiles of 51 Galaxies from Parameter-Free Inverse Models of Their Measured Rotation Curves
Autor:
Robert E. Criss, Anne M. Hofmeister
Publikováno v:
Galaxies, Vol 8, Iss 1, p 19 (2020)
Spiral galaxies and their rotation curves have key characteristics of differentially spinning objects. Oblate spheroid shapes are a consequence of spin and reasonably describe galaxies, indicating that their matter is distributed in gravitationally i
Externí odkaz:
https://doaj.org/article/17bbfd4693db4f24ac7f5b4ab0e7ad95
Autor:
Robert E. Criss, Anne M. Hofmeister
Publikováno v:
Galaxies, Vol 6, Iss 4, p 115 (2018)
Spiral galaxies are spinning, internally densified objects. The Virial Theorem explains galactic rotation curves via its linkage of the rotation rate to the gravitational self-potential (Ug) and the moment of inertia of oblate spheroids. We devise a
Externí odkaz:
https://doaj.org/article/ca17b3af15204a5aa3caf830ad538fcb
Autor:
Anne M. Hofmeister, Robert E. Criss
Publikováno v:
Galaxies, Vol 5, Iss 4, p 89 (2017)
Galactic mass consistent with luminous mass is obtained by fitting rotation curves (RC = tangential velocities vs. equatorial radius r) using Newtonian force models, or can be unambiguously calculated from RC data using a model based on spin. In cont
Externí odkaz:
https://doaj.org/article/75dc559ac09c4652b3632581d5bc3ae0