A doubled double hotspot in J0816+5003 and the logarithmic slope of the lensing potential
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...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
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Institute of Physics Publishing
2010
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| _version_ | 1797051908189323264 |
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| author | Blundell, K Schechter, P Morgan, N Jarvis, M Rawlings, S Tonry, J |
| author_facet | Blundell, K Schechter, P Morgan, N Jarvis, M Rawlings, S Tonry, J |
| author_sort | Blundell, K |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-06T18:25:52Z |
| format | Journal article |
| id | oxford-uuid:07f1b2cf-073e-4a4b-9af7-bc7f7ea1e709 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:25:52Z |
| publishDate | 2010 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | oxford-uuid:07f1b2cf-073e-4a4b-9af7-bc7f7ea1e7092022-03-26T09:10:16ZA doubled double hotspot in J0816+5003 and the logarithmic slope of the lensing potentialJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:07f1b2cf-073e-4a4b-9af7-bc7f7ea1e709EnglishSymplectic Elements at OxfordInstitute of Physics Publishing2010Blundell, KSchechter, PMorgan, NJarvis, MRawlings, STonry, JWe 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. |
| spellingShingle | Blundell, K Schechter, P Morgan, N Jarvis, M Rawlings, S Tonry, J A doubled double hotspot in J0816+5003 and the logarithmic slope of the lensing potential |
| title | A doubled double hotspot in J0816+5003 and the logarithmic slope of the
lensing potential |
| title_full | A doubled double hotspot in J0816+5003 and the logarithmic slope of the
lensing potential |
| title_fullStr | A doubled double hotspot in J0816+5003 and the logarithmic slope of the
lensing potential |
| title_full_unstemmed | A doubled double hotspot in J0816+5003 and the logarithmic slope of the
lensing potential |
| title_short | A doubled double hotspot in J0816+5003 and the logarithmic slope of the
lensing potential |
| title_sort | doubled double hotspot in j0816 5003 and the logarithmic slope of the lensing potential |
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