Abstract
We discover that the mass of dark matter particles m DM is imprinted in phase correlations of the cosmic density field more significantly than in the two-point correlation. In particular, phase correlations trace m DM out to scales about five times larger than the two-point correlation. This result relies on a new estimator ℓ(r) of pure phase information in Fourier space, which can be interpreted as a parameter-free and scale-invariant tracer of filament-like structure. Based on simulated density fields, we show how m DM can, in principle, be measured using ℓ(r), given a suitably reconstructed density field. © 2013. The American Astronomical Society. All rights reserved..
Original language | English |
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Pages (from-to) | Article number 115 |
Journal | The Astrophysical Journal |
Volume | 762 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2013 |