Alba Kalaja

PhD Candidate @ VSI Groningen

Hello visitor!
I am a fourth-year PhD candidate at the Van Swinderen Institute (Cosmic Frontier), in Groningen (Netherlands). I work with Daan Meerburg on primordial and secondary non-Gaussianity in the Cosmic Microwave Background (CMB). My research focuses on the higher-order statistics of primordial fluctuations, weak gravitational lensing, reconstruction of the CMB lensing bispectrum and cross-correlation with cosmic shear. I am member of the Simons Observatory collaboration.
I am currently a Predoctoral Fellow at the Center for Computational Astrophysics (Flatiron Institute) working with Shirley Ho and William Coulton.

List of publications Curriculum Vitae

Research and Publications

The reconstruction of the lensing bispectrum

CMB lensing is a powerful tool to test cosmological parameters, and coming ground-based experiments could potentially detect the lensing bispectrum with a high significance.

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Fundamental limits on constraining primordial non-Gaussianity

In this work, we explore the cosmic variance limit on constraining primordial non-Gaussianity for a variety of theory-motivated shapes.

Arxiv

From Primordial Black Holes Abundance to Primordial Curvature Power Spectrum (and back)

PBHs can be a probe of the physics of the early universe. Here, we provid new constraints on the primordial curvature power spectrum from the latest limits on PBH abundance.