Browsing by Subject "Flatness"

Now showing items 1-3 of 3

    • Direct search for features in the primordial bispectrum 
      Appleby, Stephen; Gong, Jinn-Ouk; Hazra, Dhiraj Kumar; Shafieloo, Arman; Sypsas, Spyros (Elsevier, 2016)
      We study features in the bispectrum of the primordial curvature perturbation correlated with the reconstructed primordial power spectrum from the observed cosmic microwave background temperature data. We first show how the ...
    • Seeding Primordial Black Holes in Multifield Inflation 
      Palma Quilodrán, Gonzalo; Sypsas, Spyros; Zenteno, Cristóbal (American Physical Society, 2020)
      The inflationary origin of primordial black holes (PBHs) relies on a large enhancement of the power spectrum Delta(zeta) of the curvature fluctuation zeta at wavelengths much shorter than those of the cosmic microwave ...
    • Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: 40 GHz Telescope Pointing, Beam ... 
      Xu, Zhilei; Brewer, Michael K.; Rojas, Pedro Fluxa; Li, Yunyang; Osumi, Keisuke; Pradenas, Bastian; Ali, Aamir; Appel, John; Bennett, Charles L.; Bustos, Ricardo; Chan, Manwei; Chuss, David T.; Cleary, Joseph; Couto, Jullianna Denes; Dahal, Sumit; Datta, Rahul; Denis, Kevin L.; Dunner, Rolando; Eimer, Joseph R.; Essinger Hileman, Thomas; Gothe, Dominik; Harrington, Kathleen; Iuliano, Jeffrey; Karakla, John; Marriage, Tobias A.; Miller, Nathan J.; Núñez, Carolina; Padilla, Ivan L.; Parker, Lucas; Petroff, Matthew A.; Reeves, Rodrigo; Rostem, Karwan; Valle, Deniz Augusto; Watts, Duncan J.; Weiland, Janet L.; Wollack, Edward J. (IOP, 2020)
      The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over 75% of the sky from the Atacama Desert, Chile, at frequency bands centered near 40, 90, 150, ...