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21-cm Lensing and the Cold Spot in the Cosmic Microwave Background
Ely D. Kovetz, Marc Kamionkowski
An extremely large void and a cosmic texture are two possible explanations for the cold spot seen in the cosmic microwave background. We investigate how well these two hypotheses c…
Galaxy-cluster masses via 21st-century measurements of lensing of 21-cm fluctuations
Ely D. Kovetz, Marc Kamionkowski
We discuss the prospects to measure galaxy-cluster properties via weak lensing of 21-cm fluctuations from the dark ages and the epoch of reionization (EOR). We choose as a figure o…
Rapid field excursions and the inflationary tensor spectrum
Daniel Carney, Willy Fischler, Ely D. Kovetz +2
We consider the effects of fields with suddenly changing mass on the inflationary power spectra. In this context, when a field becomes light, it will be excited. This process contr…
Non-Gaussianities in the Cosmological Perturbation Spectrum due to Primordial Anisotropy II
Anindya Dey, Ely D. Kovetz, Sonia Paban
We continue to investigate possible signatures of a pre-inflationary anisotropic phase in two-point and three point correlation functions of the curvature perturbation for high-mom…