Paper:	Deep Radio Surveys
Volume:	380, At the Edge of the Universe: Latest Results from the Deepest Astronomical Surveys
Page:	189
Authors:	Condon, J.J.
Abstract:	All radio surveys are deep in redshift and lookback time; sensitive radio surveys detect sources of lower luminosity. Every luminous radio galaxy and quasar out to z ~ 10 has already been found by all-sky surveys and needs only to be identified. Star-forming galaxies dominate the population of sources fainter than S ≈ 0.1mJy at 1.4GHz, and sensitive surveys indicate strong evolution of the cosmic star-formation rate out to z ≈ 1. The large differences among source counts from existing deep surveys seem to be dominated by instrumental and analysis effects, not by cosmic variance. Using power-density functions instead of luminosity functions and weighting source counts by S2 clarifies the contributions of different galaxy populations to the star-formation-rate density and to the radio sky background. Future surveys will require very high dynamic range and should not be limited by natural confusion above S ~ 0.01 μJy.

Astronomical Society of the Pacific
Conference Series

© Copyright 1988 - 2025 - Astronomical Society of the Pacific
No part of the material protected by this copyright may be reproduced or used in any form other than for personal use without written permission from the ASP.

Page generated in 0.136 seconds