Results 131 to 140 of about 106,851 (294)

Towards the Explanation of Flatness of Galaxies Rotation Curves

Universe, 2022
We suggest a new explanation of the flatness of galaxies rotation curves without invoking dark matter. For this purpose, a new gravitational tensor field is introduced in addition to the metric tensor.
openaire   +3 more sources

The Mass of the Milky Way: Limits from a Newly Assembled Set of Halo Objects

, 2002
We set new limits on the mass of the Milky Way, making use of the latest kinematic information for Galactic satellites and halo objects. In order to bind these sample objects to the Galaxy, their rest-frame velocities must be lower than their escape ...
Alcock, Alcock, Anguita, Beers, Carney, Carretta, Carretta, Chen, Chiba, Christlieb, Côté, Dauphole, Dehnen, Dejonghe, Dinescu, Dinescu, Dinescu, Evans, Evans, Fich, Fricke, Harris, Held, Hernquist, Hog, Honma, Ibata, Johnston, Johnston, Kerr, Kinman, Kochanek, Kroupa, Leonard, Lindegren, Little, M. Chiba, Martin, Mateo, Merritt, Miyamoto, Miyamoto, Miyamoto, Méndez, Norris, Pedreros, Peebles, Platais, Preston, Preston, Preston, Rodgers, Schmoldt, Scholz, Siegel, Sommer-Larsen, T. C. Beers, T. Sakamoto, Unwin, Wang, Wilhelm, Wilhelm, Wilkinson, Zacharias, Zacharias, Zaritsky   +65 more
core   +1 more source

KURVS: the outer rotation curve shapes and dark matter fractions of z ∼ 1.5 star-forming galaxies [PDF]

, 2023
Annagrazia Puglisi, U Dudzevičiūtė, A. M. Swinbank, Steven Gillman, Alfred L Tiley, R. G. Bower, Michele Cirasuolo, L. Cortese, Karl Glazebrook, C. M. Harrison, E. Ibar, Juan Molina, Danail Obreschkow, Kyle A. Oman, Matthieu Schaller, Francesco Shankar, R. M. Sharples   +16 more
openalex   +1 more source

Deriving the velocity distribution of Galactic dark matter particles from the rotation curve data [PDF]

, 2012
The velocity distribution function (VDF) of the hypothetical Weakly Interacting Massive Particles (WIMPs), currently the most favored candidate for the Dark Matter (DM) in the Galaxy, is determined directly from the circular speed ("rotation") curve data
P. Bhattacharjee, Soumini Chaudhury, S. Kundu, S. Majumdar   +3 more
semanticscholar   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

The Effect of Corotation on the Radial Gradient of Metallicity of Spiral Galaxies

, 2010
The corotation radius in a spiral galaxy is the radius where the spiral pattern speed has the same velocity of the rotation curve. By compiling results from the literature for 20 spiral galaxies we verified a strong correlation between the radius of the ...
Lepine, J. R. D., Scarano Jr., S.
core   +1 more source

The Link between the Baryonic Mass Distribution and the Rotation Curve Shape [PDF]

, 2012
The observed rotation curves of disc galaxies, ranging from late-type dwarf galaxies to early-type spirals, can be fit remarkably well simply by scal ing up the contributions of the stellar and H I discs.
R. Swaters, R. Sancisi, J. Hulst, T. S. Albada   +3 more
semanticscholar   +1 more source

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

Experimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo, Christina Lysandrou, Laura Sudres, Alfonso Gil‐Martinez, Jaap Swanenburg, James Edward Clark, David Andrew Green   +6 more
wiley   +1 more source

Cold gas disks in main-sequence galaxies at cosmic noon: Low turbulence, flat rotation curves, and disk-halo degeneracy [PDF]

, 2023
Federico Lelli, Zhi-Yu Zhang, Thomas G. Bisbas, Lingrui Lin, P. P. Papadopoulos, James M. Schombert, Enrico M. Di Teodoro, Antonino Marasco, Stacy McGaugh   +8 more
openalex   +3 more sources

Role of Gaseous Disk in the Formation of the Spiral Structure of the Milky Way Galaxy

Open Astronomy, 2016
We use observational gaseous and stellar density distributions in the disk of the Milky Way (MW) galaxy together with the disk rotation curve and measured disk velocity dispersion to build collisionless and combined collisionless-gaseous equilibrium ...
Korchagin V. I., Khoperskov S. A., Khoperskov A. V.   +2 more
doaj   +1 more source