Unusual radio source MG1131+0456: A possible Einstein ring

J. N. Hewitt, E. L. Turner, D. P. Schneider, B. F. Burke, G. I. Langston, C. R. Lawrence

Research output: Contribution to journalArticle

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Abstract

We report the discovery of extremely unusual structure in the radio source MG1131 + 0456. In a radio map with sub∼arc$econd resolution the object appears as an elliptical ring of emission accompanied by a pair of more compact sources, nearly diametrically opposed and offset ∼0.3 arc s to the south-west of the ring. There is a faint, slightly extended, optical counterpart. In its spectrum we detect a continuum but no emission lines; therefore the redshift of the counterpart is unknown. The radio morphology suggests that this source may be an example of an 'Einstein ring'1, a highly symmetric case of grayitational lensing in which the source is imaged into a ring. Other explanations that we consider are excluded by the data. Another possibility is that MG1131 +0456 represents a new type of (unlensed) astronomical object.

Original languageEnglish (US)
Pages (from-to)537-540
Number of pages4
JournalNature
Volume333
Issue number6173
DOIs
StatePublished - Jan 1 1988

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Hewitt, J. N., Turner, E. L., Schneider, D. P., Burke, B. F., Langston, G. I., & Lawrence, C. R. (1988). Unusual radio source MG1131+0456: A possible Einstein ring. Nature, 333(6173), 537-540. https://doi.org/10.1038/333537a0
Hewitt, J. N. ; Turner, E. L. ; Schneider, D. P. ; Burke, B. F. ; Langston, G. I. ; Lawrence, C. R. / Unusual radio source MG1131+0456 : A possible Einstein ring. In: Nature. 1988 ; Vol. 333, No. 6173. pp. 537-540.
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Hewitt, JN, Turner, EL, Schneider, DP, Burke, BF, Langston, GI & Lawrence, CR 1988, 'Unusual radio source MG1131+0456: A possible Einstein ring', Nature, vol. 333, no. 6173, pp. 537-540. https://doi.org/10.1038/333537a0

Unusual radio source MG1131+0456 : A possible Einstein ring. / Hewitt, J. N.; Turner, E. L.; Schneider, D. P.; Burke, B. F.; Langston, G. I.; Lawrence, C. R.

In: Nature, Vol. 333, No. 6173, 01.01.1988, p. 537-540.

Research output: Contribution to journalArticle

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AU - Hewitt, J. N.

AU - Turner, E. L.

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Hewitt JN, Turner EL, Schneider DP, Burke BF, Langston GI, Lawrence CR. Unusual radio source MG1131+0456: A possible Einstein ring. Nature. 1988 Jan 1;333(6173):537-540. https://doi.org/10.1038/333537a0