Journal article

A doubled double hotspot in J0816+5003 and the logarithmic slope of the lensing potential

Abstract:: We present an analysis of observations of the doubly-lensed double hotspot in the giant radio galaxy J0816+5003 from MERLIN, MDM, WIYN, WHT, UKIRT and the VLA. The images of the two hotspot components span a factor of two in radius on one side of the lensing galaxy at impact parameters of less than 500pc. Hence we measure the slope of the lensing potential over a large range in radius, made possible by significant improvement in the accuracy of registration of the radio and optical frame and higher resolution imaging data than previously available. We also infer the lens and source redshifts to be 0.332 and > 1 respectively. Purely on the basis of lens modelling, and independently of stellar velocity dispersion measurements, we find the potential to be very close to isothermal.

Publication status:: Published

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APA Style

Blundell, K., Schechter, P., Morgan, N., Jarvis, M., Rawlings, S., & Tonry, J. (2010). A doubled double hotspot in J0816+5003 and the logarithmic slope of the lensing potential. ASTROPHYSICAL JOURNAL, 723(2), 1319–1324.

MLA Style

Blundell, K., et al. “A Doubled Double Hotspot in J0816+5003 and the Logarithmic Slope of The Lensing Potential.” ASTROPHYSICAL JOURNAL, vol. 723, no. 2, Institute of Physics Publishing, 2010, pp. 1319–24.

Chicago Style

Blundell, K, P Schechter, N Morgan, M Jarvis, S Rawlings, and J Tonry. 2010. “A Doubled Double Hotspot in J0816+5003 and the Logarithmic Slope of The Lensing Potential.” ASTROPHYSICAL JOURNAL 723 (2): 1319–24.
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Publisher copy:: 10.1088/0004-637X/723/2/1319

Authors

+ Blundell, K More by this author

Role:: Author

+ Schechter, P More by this author

Role:: Author

+ Morgan, N More by this author

Role:: Author

+ Jarvis, M More by this author

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

+ Rawlings, S More by this author

Role:: Author

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Publisher:: Institute of Physics Publishing
Journal:: ASTROPHYSICAL JOURNAL More from this journal
Volume:: 723
Issue:: 2
Pages:: 1319-1324
Publication date:: 2010-08-19
DOI:: 10.1088/0004-637X/723/2/1319
EISSN:: 1538-4357
ISSN:: 0004-637X

Language:: English
Keywords:: astro-ph.CO

astro-ph.GA
Pubs id:: pubs:103749
UUID:: uuid:07f1b2cf-073e-4a4b-9af7-bc7f7ea1e709
Local pid:: pubs:103749
Source identifiers:: 103749
Deposit date:: 2012-12-19

Terms of use

Copyright date:: 2010
Notes:: accepted by ApJ

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

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