English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Ground based optical observations have yielded considerable information onthe statistics of damped-lyman alpha systems. In particular these systems areknown to be the dominant repository of the observed neutral gas at highredshift. However, particularly at high redshift, there is the possibility thatoptical observations could be biased due to the exclusion of damped-lyman alphasystems that contain moderate to significant amounts of dust. Independentobservational constraints on the neutral hydrogen content at high redshifts andthe amount of dust in high redshift systems can be obtained from a radio searchagainst the bright lobes of distant radio galaxies (which is less affected bythe presence of dust in foreground damped-lyman alpha systems). We describehere a pilot radio survey along the line of sight to a small sample of highredshift radio galaxies, and also present some preliminary results. The surveyuses a novel observing mode at the WSRT which enables one to make sensitivesearches of a large redshift interval in a modest amount of telescope time.

A Radio Search for High Redshift HI Absorption