Results 101 to 110 of about 10,749 (290)
Peculiar Velocity Dipoles of Field Galaxies
The Astrophysical Journal, 1998 The Tully-Fisher (Tully and Fisher 1977; TF) relation is applied to obtain peculiar velocities of field spirals galaxies and to calculate dipoles of the peculiar velocity field to cz ~ 8000 km/s. The field galaxy sample is spatially co-extensive with and completely independent on a cluster sample, for which dipole characteristics are given in a ...
Giovanelli, R. +5 more
openaire +2 more sources
Non-comoving baryons and cold dark matter in cosmic voids
European Physical Journal C: Particles and Fields, 2019 We examine the fully relativistic evolution of cosmic voids constituted by baryons and cold dark matter (CDM), represented by two non-comoving dust sources in a $$\varLambda $$ Λ CDM background.
Ismael Delgado Gaspar +2 more
doaj +1 more source
Peculiar velocity decomposition, redshift space distortion, and velocity reconstruction in redshift surveys: The methodology [PDF]
, 2013 Pengjie Zhang, Jun Pan, Yi Zheng
openalex +1 more source
The Distance and Peculiar Velocity of the Norma Cluster (ACO3627) Using the Near-infrared J- and K s -band Fundamental Plane Relations [PDF]
, 2021 Tom Mutabazi
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International Journal of Adaptive Control and Signal Processing, EarlyView.This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley +1 more source
Systematic Search for Water Fountain Candidates Using the Databases of Circumstellar Maser Sources
The Astrophysical Journal Supplement SeriesWater fountains (WFs) are thought to be objects in the morphological evolution of the circumstellar envelopes of low- and intermediate-mass evolved stars, transitioning from spherically symmetric to asymmetric shapes.
Haichen Fan +8 more
doaj +1 more source
Journal of Robotics, 2012 Two different visual servoing controls have been developed to govern a translating parallel manipulator with an eye-in-hand configuration, That is, a position-based and an image-based controller.
G. Palmieri +3 more
doaj +1 more source
Current Tracking Adaptive Control of Brushless DC Motors
International Journal of Adaptive Control and Signal Processing, EarlyView.In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García +3 more
wiley +1 more source
International Journal of Adaptive Control and Signal Processing, EarlyView.This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley +1 more source
Peculiar Motions of B Stars Determined from Radial Velocities [PDF]
, 1963 R. M. Petrie
openalex +1 more source