Conference item

Cosmology with redshift surveys of radio sources

Abstract:: We use the K-z relation for radio galaxies to illustrate why it has proved difficult to obtain definitive cosmological results from studies based entirely on catalogues of the brightest radio sources, e.g. 3C. To improve on this situation we have been undertaking redshift surveys of complete samples drawn from the fainter 6C and 7C radio catalogues. We describe these surveys, and illustrate the new studies they are allowing. We also discuss our `filtered' 6C redshift surveys: these have led to the discovery of a radio galaxy at z=4.4, and are sensitive to similar objects at higher redshift provided the space density of these objects is not declining too rapidly with z. There is currently no direct evidence for a sharp decline in the space density of radio galaxies for z > 4, a result only barely consistent with the observed decline of flat-spectrum radio quasars.

Publication status:: Published

Actions

Email

Email this record

Send the bibliographic details of this record to your email address.

Your Email
Please enter the email address that the record information will be sent to.

-
Your message (optional)
Please add any additional information to be included within the email.
Share
Cite

Cite this record

APA Style

Rawlings, S., Blundell, K., Lacy, M., Willott, C., & Eales, S. A. (1997). Cosmology with redshift surveys of radio sources. Workshop on Observational Cosmology with the New Radio Surveys, 226, 171–178.

MLA Style

Rawlings, S, et al. “Cosmology with Redshift Surveys of Radio Sources.” Workshop on Observational Cosmology with the New Radio Surveys, vol. 226, 1997, pp. 171–78.

Chicago Style

Rawlings, S, K Blundell, M Lacy, C Willott, and SA Eales. 1997. “Cosmology with Redshift Surveys of Radio Sources.” In Workshop on Observational Cosmology with the New Radio Surveys, 226:171–78.
Print

Authors

+ Rawlings, S More by this author

Role:: Author

+ Blundell, K More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Astrophysics
Role:: Author

+ Lacy, M More by this author

Role:: Author

+ Willott, C More by this author

Role:: Author

+ Eales, SA More by this author

Role:: Author

Journal:: OBSERVATIONAL COSMOLOGY More from this journal
Volume:: 226
Pages:: 171-178
Publication date:: 1997-04-15
Event title:: Workshop on Observational Cosmology with the New Radio Surveys
ISBN:: 0792348850

Keywords:: astro-ph
Pubs id:: pubs:24985
UUID:: uuid:a300e508-3010-4cf3-9b42-59e22dfc83d7
Local pid:: pubs:24985
Source identifiers:: 24985
Deposit date:: 2012-12-19
ARK identifier:: ark:/29072/ora_a300e50830104cf39b4259e22dfc83d7

Terms of use

Copyright date:: 1997
Notes:: 8 pages Latex, To appear in the "Cosmology with the New Radio
Surveys" Conference - Tenerife 13-15 January 1997

Licence:: Terms and Conditions of Use for Oxford University Research Archive

Views and Downloads

About views and downloads

If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP