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We calculate cosmological and astrophysical bounds on the couplings betweenstandard model fields and tensor unparticles. The present day density of tensorunparticles from neutrino-neutrino and photon-photon annihilation iscalculated. Also, the supernovae volume energy loss rates fromelectron-positron and photon-photon annihilation to tensor unparticles arecalculated. The constraints from matter density and supernovae volume energyloss rates from photon-photon annihilation are on the same order of magnitude,while the bounds from supernovae volume energy loss rates fromelectron-positron annihilation are an order of magnitude lower. We find thecouplings between standard model fields and tensor unparticles are at least anorder of magnitude lower than those used for previous studies of tensorunparticle collider phenomenology.

Cosmological and Astrophysical Constraints on Tensor Unparticles