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ABSTRACT CONWAY and Gilbert1 have noted that the mean linear polarisation at wavelength _λ_ 49 cm of highly redshifted quasars is significantly less for those with optical absorption lines

compared with those with none. They suggested that the cause was Faraday depolarisation in the same regions responsible for the absorption lines. Gardner and Whiteoak2 pointed out similar

differences between the two quasar types at _λλ_ 11 cm and 6 cm. They regarded lower intrinsic polarisation of absorption-line quasars as a more likely explanation. Both findings were based

on extremely small statistical samples. Subsequently much more data have become available at both optical and radio wavelengths. The significance of absorption-line quasars has also been

enhanced. We therefore undertook a study using today' greater set of data. Access through your institution Buy or subscribe This is a preview of subscription content, access via your

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article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in

* Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS A UNIVERSAL AVERAGE SPECTRAL ENERGY DISTRIBUTION FOR QUASARS FROM

THE OPTICAL TO THE EXTREME ULTRAVIOLET Article 05 October 2023 EXPLORING SECULAR VARIATION OF THE GRAVITATIONAL CONSTANT FROM HIGH-RESOLUTION QUASAR SPECTRA Article Open access 06 July 2024

THE ACCRETION OF A SOLAR MASS PER DAY BY A 17-BILLION SOLAR MASS BLACK HOLE Article 19 February 2024 REFERENCES * Conway, R. G. & Gilbert, J. A. _Nature_ 226, 332 (1970). Article  ADS 

CAS  Google Scholar  * Gardner, F. F. & Whiteoak, J. B. _Nature_ 227, 585 (1970). Article  ADS  CAS  Google Scholar  * Wardle, J. F. C. & Kronberg, P. P. _Astrophys. J._ 194, 249

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(in the press). * Wright, W. E. thesis, California Institute of Technology (1973). * Gardner, F. F., Whiteoak, J. B. & Morris, D. _Aust. J. Phys., Astrophys. Suppl._ 35, 1 (1975). ADS 

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astr. Soc._ 147, 149 (1970). Article  ADS  Google Scholar  * Conway, R. G., Gilbert, J. A., Kronberg, P. P. & Strom, R. G. _Mon. Not. R. astr. Soc._ 157, 443 (1972). Article  ADS  Google

Scholar  * Burbridge, G. R., Crowne, A. H. & Smith, H. E. _Astrophys. J. Suppl._ 33, 113 (1977). Article  ADS  Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND

AFFILIATIONS * Owens Valley Radio Observatory, California Institute of Technology, Pasadena, California, 91125 G. A. SEIELSTAD Authors * G. A. SEIELSTAD View author publications You can also

search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE SEIELSTAD, G. Radio polarisation of quasars with optical

absorption spectra. _Nature_ 270, 502–503 (1977). https://doi.org/10.1038/270502b0 Download citation * Received: 16 September 1977 * Accepted: 07 October 1977 * Issue Date: 08 December 1977

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