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Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Nonlinear kinetic Sunyaev-Zeldovich effect
1Department of Astronomy, University of California at Berkeley, Berkeley, California 94720, USA. cpma@astron.berkeley.edu
Abstract:
We derive fully nonlinear expressions for temperature fluctuations from the kinetic Sunyaev-Zeldovich (SZ) effect, the scattering of cosmic microwave background photons off hot electrons in bulk motion. Our result reproduces the Ostriker-Vishniac effect to second order in perturbation theory but contains nonlinear corrections to the electron velocities and densities that were neglected previously. We use the recently developed halo model for nonlinear gravitational clustering to compute the nonlinear kinetic SZ power spectrum, which dominates the primary anisotropy on small angular scales.
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