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Theoretical estimates of two-point shear correlation functions using tangled magnetic fields

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dc.contributor.authorPandey, Kanhaiya L
dc.contributor.authorSethi, Shiv
dc.date.accessioned2012-03-29T08:26:43Z
dc.date.available2012-03-29T08:26:43Z
dc.date.issued2012-03
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractThe existence of primordial magnetic fields can induce matter perturbations with additional power at small scales as compared to the usual ΛCDM model.We study its implication within the context of a two-point shear correlation function from gravitational lensing. We show that a primordial magnetic field can leave its imprints on the shear correlation function at angular scales a few arcminutes. The results are compared with CFHTLS data, which yield some of the strongest known constraints on the parameters (strength and spectral index) of the primordial magnetic field. We also discuss the possibility of detecting sub-nano Gauss fields using future missions such as SNAP.en
dc.identifier.citationAstrophysical Journal, 2012, Vol.748, p27en
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357-(Online)
dc.identifier.urihttp://hdl.handle.net/2289/4374
dc.language.isoenen
dc.publisherIOP Publishing for the American Astronomical Societyen
dc.relation.urihttp://adsabs.harvard.edu/abs/2012ApJ...748...27Pen
dc.relation.urihttp://arxiv.org/abs/1201.3619en
dc.relation.urihttp://dx.doi.org/10.1088/0004-637X/748/1/27en
dc.rights2012 The American Astronomical Societyen
dc.subjectobservations – cosmologyen
dc.subjecttheory – gravitational lensingen
dc.subjectweak – magnetic fields Online-only materialen
dc.subjectcolor figuresen
dc.titleTheoretical estimates of two-point shear correlation functions using tangled magnetic fieldsen
dc.typeArticleen

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