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CYBERSKA
A Cyberinfrastructure platform to meet the needs of data intensive radio astronomy on route to the SKA |
Results for "radio"
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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
4631 days ago
- Accretion models predict that fluorescence lines broadened by relativistic effects should arise from reflection of X-ray emission onto the inner region of the accretion disc surrounding the central black hole of active galactic nuclei (AGN). The theory behind the origin of relativistic lines is w...
Tags: high energy astrophysical phenomena, xray, agn, xmm, radio, arxiv, a&a
4625 days ago
- We investigate the far-infrared–radio correlation (FRC) of stellar-mass-selected galaxies in the Extended Chandra Deep Field-South using far-infrared (FIR) imaging from Spitzer and radio imaging from the Very Large Array and Giant Metre-Wave Radio Telescope. We stack in redshift bins to pro...
Tags: stacking, infrared, radio
4548 days ago
Modelling the radio pulses of an ultracool dwarf
Recently unanticipated magnetic activity in ultracool dwarfs (UCDs, spectral classes later than M7) have emerged from a number of radio observations. The highly (up to 100%) circularly polarized nature and high brightness temperature of the emission has been interpreted as an effective amplificat...Tags: arxiv, a&a, solar and stellar astrophysics, ucds, brown dwards, tvlm513, xray, radio
4582 days ago
