Rotation of the CMB polarisation by foreground lensing
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2019
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866914955339497472 |
|---|---|
| author | Di Dio, Enea Durrer, Ruth Fanizza, Giuseppe Marozzi, Giovanni |
| author_facet | Di Dio, Enea Durrer, Ruth Fanizza, Giuseppe Marozzi, Giovanni |
| contents | We investigate the weak lensing corrections to the CMB polarization anisotropies. We concentrate on the effect of rotation and show that the rotation of polarisation is a true physical effect which has to be taken into account at second order in perturbation theory. We clarify inconsistencies on the treatment of this rotation in the recent literature. We also show that at first order in perturbation theory there is no rotation of polarisation also for vector and tensor modes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1905_12573 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Rotation of the CMB polarisation by foreground lensing Di Dio, Enea Durrer, Ruth Fanizza, Giuseppe Marozzi, Giovanni Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory We investigate the weak lensing corrections to the CMB polarization anisotropies. We concentrate on the effect of rotation and show that the rotation of polarisation is a true physical effect which has to be taken into account at second order in perturbation theory. We clarify inconsistencies on the treatment of this rotation in the recent literature. We also show that at first order in perturbation theory there is no rotation of polarisation also for vector and tensor modes. |
| title | Rotation of the CMB polarisation by foreground lensing |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/1905.12573 |