rotation curve
An Alternative Model of Rotation Curve that Explains Anomalous Orbital Velocity, Mass Discrepancy and Structure of Some Galaxies
... the rotation curve of some galaxies can be described using a cyclostrophic balance of pressure gradient force and centrifugal force similar to vortices occurring in ...the rotation velocity of ...
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A compendium of chameleon constraints
... galactic rotation curves are typically measured using Hα or the 21 cm line, which both probe the gaseous ...stellar rotation curve to be ...the rotation curves for both components using this ...
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The_Formation_of_the_Galactic_Bar_and_Spiral_Arms_in_a_Stellar_Disc_in_Cylindrical_Coordinates.pdf
... (I) I choose an initial guess for the surface density of the stars and obtain the corresponding rotation curve by solving equation (27) and the stellar self-gravity via 1D logarithmic spiral method ...
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Alma Imaging of Hcn, Cs, and Dust in Arp 220 and Ngc 6240
... parametric rotation curve and an axisymmetric, radial emissitivity distribution which best fits the observed line profiles seen in HCN (4–3) across Arp 220 east and west and NGC ...self-consistent ...
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Perspectives on the detection of supersymmetric Dark Matter
... (required by a flat rotation curve) and like 1/R near the galactic centre. So the highest annihilation rate is expected to be in the centre. With the annihilation into b-quark pairs the decays will include ...
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The Fine Structure and Outskirts of DDO 154
... the rotation curve would increase the velocity dispersion in the central regions (out to radius 50 00 ) of the galaxy by somewhat less than 2 km s −1 , about what is observed, so it is not clear whether any ...
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Simulating the Milky Way is hard
... Simulations have trouble reproducing Milky Way mass disk galaxies because of overcooling. Much angular momentum is lost and gas cools into the centers of simulated galaxies where it forms a lot of stars. Such a galaxy ...
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The contribution of the Division of Radiophysics Potts Hill and Murraybank Field Stations to international radio astronomy
... Given an estimate of radial velocity, it was also possible to estimate the mass of both Magellanic Clouds. Kerr and de Vaucouleurs examined this problem in a separate paper (Kerr and De Vaucouleurs, 1956). Mass estimates ...
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Neutral hydrogen in dwarf galaxies. II. The kinematics of HI
... Fig. 3. The mean velocity dispersion as a function of sin(i) for the low resolution maps. Closed symbols are objects for which the inclinations were determined with a tilted ring fit. The inclination of the remaining ...
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Accelerated Frames and Galactic Rotation Curves
... ds 2 = − e 2ψ(ρ,z) dt 2 + e − 2ψ(ρ,z) h e 2γ(ρ,z) d ρ 2 + dz 2 + ρ 2 d φ 2 i . (1) Most of the galaxy mass is concentrated in a central region while stars describe a close motion around it. Thus the vacuum solution of ...
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Accelerated cosmological expansion without tension in the Hubble parameter - Fast evolution of the Hubble parameter H(z)
... Our model for cosmological evolution has a Hubble parameter H 0 free of tension with estimates from surveys of the Local Universe A further confrontation with galaxy rotation curve data [r] ...
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From Phillips curve to wage curve
... In policy analysis with traditional macro-economic models of the Netherlands, like the Freia-Kompas model of the Central Planning Bureau (Van den Berg et al., 1988), the wage equation plays an important role. In a ...
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Ab-Initio Computational Studies of the Structural Conformations of Dimethylbis (Methyldithio Carbonato) Stannum (IV)
... that rotation of the S-, S- orientated dithiocarbonate ligand through to R1 = 90° and 270° caused certain atoms on the central molecule and those of its closest neighbours to be brought closer ...that ...
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Free Vibration and Modal Analysis of Tower Crane Using SAP2000 and ANSYS
... pitching, rotation and yawing of horizontal arm, vertical column and horizontal tail (short arm) as well as some combined modes, as shown in the figures 2 to 13 ...the rotation with respect to x-axis to be ...
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Magnetic activity and hot Jupiters of young Suns: the weak line T Tauri stars V819 Tau and V830 Tau
... differential rotation); this framework is well adapted to the case of wTTSs for which rotational modulation largely dominates intrinsic variability, in both photome- try ...
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Overstuffing in resurfacing hemiarthroplasty is a potential risk for failure
... the curve; CAP: Conservative anatomic prosthesis; CFB: Change from baseline; CI: Confidence interval; COR: Center of rotation; CSA: Critical shoulder angle; CT: Computer tomogram; ICC: Intra-class ...
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Modeling the Force Velocity Relationship in Arm
... 2.7. Finding the Matched Range of Measured and Theoretical Angular Velocity Functions There are two unknown variables in Equation (15), pow- er P and kinetic friction coefficient C. In order to deter- mine these two ...
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The application of Gompertz curve in the curve fitting of urbanization
... growth curve was first proposed by ...The curve was originally used to describe growth of animals and plants, reproduction process and dose-response ...simulation curve can be divided into four ...
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Rotating magnetic field separation of minerals
... The rotation index The relationship between particle magnetic moment lifting fields and rotation indices The relationship between rotation indices and anisotropy constants The effect of [r] ...
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Is There a Kuznets Curve?
... influential paper (updated in Barro, 2008) did find support for the Kuznets curve, but that was due to regressions which do not include country fixed effects. That is, Barro was reproducing the usual ...
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