Exploring degeneracies in modified gravity with weak lensing
By considering linear-order departures from general relativity, we compute a novel expression for the weak lensing convergence power spectrum under alternative theories of gravity. This comprises an integral over a 'kernel' of general relativistic quantities multiplied by a theory-dependen...
| Main Authors: | , , |
|---|---|
| Format: | Journal article |
| Published: |
2015
|
| _version_ | 1826257058345779200 |
|---|---|
| author | Leonard, C Baker, T Ferreira, P |
| author_facet | Leonard, C Baker, T Ferreira, P |
| author_sort | Leonard, C |
| collection | OXFORD |
| description | By considering linear-order departures from general relativity, we compute a novel expression for the weak lensing convergence power spectrum under alternative theories of gravity. This comprises an integral over a 'kernel' of general relativistic quantities multiplied by a theory-dependent 'source' term. The clear separation between theory-independent and -dependent terms allows for an explicit understanding of each physical effect introduced by altering the theory of gravity. We take advantage of this to explore the degeneracies between gravitational parameters in weak lensing observations. |
| first_indexed | 2024-03-06T18:12:05Z |
| format | Journal article |
| id | oxford-uuid:035f587d-8078-459c-a7d9-870337f0b510 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:12:05Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | oxford-uuid:035f587d-8078-459c-a7d9-870337f0b5102022-03-26T08:45:44ZExploring degeneracies in modified gravity with weak lensingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:035f587d-8078-459c-a7d9-870337f0b510Symplectic Elements at Oxford2015Leonard, CBaker, TFerreira, PBy considering linear-order departures from general relativity, we compute a novel expression for the weak lensing convergence power spectrum under alternative theories of gravity. This comprises an integral over a 'kernel' of general relativistic quantities multiplied by a theory-dependent 'source' term. The clear separation between theory-independent and -dependent terms allows for an explicit understanding of each physical effect introduced by altering the theory of gravity. We take advantage of this to explore the degeneracies between gravitational parameters in weak lensing observations. |
| spellingShingle | Leonard, C Baker, T Ferreira, P Exploring degeneracies in modified gravity with weak lensing |
| title | Exploring degeneracies in modified gravity with weak lensing |
| title_full | Exploring degeneracies in modified gravity with weak lensing |
| title_fullStr | Exploring degeneracies in modified gravity with weak lensing |
| title_full_unstemmed | Exploring degeneracies in modified gravity with weak lensing |
| title_short | Exploring degeneracies in modified gravity with weak lensing |
| title_sort | exploring degeneracies in modified gravity with weak lensing |
| work_keys_str_mv | AT leonardc exploringdegeneraciesinmodifiedgravitywithweaklensing AT bakert exploringdegeneraciesinmodifiedgravitywithweaklensing AT ferreirap exploringdegeneraciesinmodifiedgravitywithweaklensing |