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CYBERSKA
A Cyberinfrastructure platform to meet the needs of data intensive radio astronomy on route to the SKA |
Results for "extragalactic astrophysics"
Tags
Hydrogen 21-cm Intensity Mapping at redshift 0.8
Observations of 21-cm radio emission by neutral hydrogen at redshifts z ~ 0.5 to ~ 2.5 are expected to provide a sensitive probe of cosmic dark energy. This is particularly true around the onset of acceleration at z ~ 1, where traditional optical cosmology becomes very difficult because of the in...Tags: nature, cosmology, extragalactic astrophysics, 21cm, radio, hydrogen
4630 days ago
PyMorph: Automated Galaxy Structural Parameter Estimation using Python
We present a new software pipeline -- PyMorph -- for automated estimation of structural parameters of galaxies. Both parametric fits through a two dimensional bulge disk decomposition as well as structural parameter measurements like concentration, asymmetry etc. are supported. The pipeline is de...Tags: python, galaxies, mnras, arxiv, extragalactic astrophysics, methods
4623 days ago
Rotation Measures of Radio Sources in Hot Galaxy Clusters
The goal of this work is to investigate the Faraday rotation measure (RM) of radio galaxies in hot galaxy clusters in order to establish a possible connection between the magnetic field strength and the gas temperature of the intracluster medium. We performed Very Large Array observations at 3.6 ...Tags: arxiv, a&a, extragalactic astrophysics, rm, rotation measure
4622 days ago
Probing the first galaxies with the SKA
Observations of anisotropies in the brightness temperature of the 21 cm line of neutral hydrogen from the period before reionization would shed light on the dawn of the first stars and galaxies. In this paper, we use large-scale semi-numerical simulations to analyse the imprint on the 21 cm signa...Tags: cosmology, extragalactic astrophysics, arxiv, ska, galaxies
4582 days ago
