Estimation of wavefront arrival delay for acoustical signals using the cross‐power spectrum phase technique

1996 ◽  
Vol 100 (4) ◽  
pp. 2697-2697 ◽  
Author(s):  
Daniel V. Rabinkin ◽  
Richard J. Renomeron ◽  
James L. Flanagan ◽  
Joseph C. French
Keyword(s):  
Power Spectrum ◽  
The Cross ◽  
Acoustical Signals ◽  
Cross Power Spectrum

scholarly journals LOFAR insights into the epoch of reionization from the cross-power spectrum of 21 cm emission and galaxies

2013 ◽  
Vol 432 (3) ◽  
pp. 2615-2624 ◽  
Author(s):  
R. P. C. Wiersma ◽  
B. Ciardi ◽  
R. M. Thomas ◽  
G. J. A. Harker ◽  
S. Zaroubi ◽  
...  
Keyword(s):  
Power Spectrum ◽  
The Cross ◽  
Cross Power Spectrum

scholarly journals Probing delayed-end reionization histories with the 21-cm LAE cross-power spectrum

2020 ◽  
Vol 494 (1) ◽  
pp. 703-718 ◽  
Author(s):  
Lewis H Weinberger ◽  
Girish Kulkarni ◽  
Martin G Haehnelt
Keyword(s):  
Power Spectrum ◽  
Dynamic Range ◽  
Signal To Noise Ratio ◽  
High Dynamic Range ◽  
Integration Time ◽  
Signal To Noise ◽  
Total Signal ◽  
The Cross ◽  
Noise Ratio ◽  
Cross Power Spectrum

ABSTRACT We model the 21-cm signal and Lyman-α emitter (LAE) population evolution during the epoch of reionization in order to predict the 21-cm LAE cross-power spectrum. We employ high-dynamic-range simulations of the intergalactic medium to create models that are consistent with constraints from the cosmic microwave background, Lyman-α forest, and LAE population statistics. Using these models we consider the evolution of the cross-power spectrum for a selection of realistic reionization histories and predict the sensitivity of current and upcoming surveys to measuring this signal. We find that the imprint of a delayed end to reionization can be observed by future surveys, and that strong constraints can be placed on the progression of reionization as late as z = 5.7 using a Subaru–SKA survey. We make predictions for the signal-to-noise ratios achievable by combinations of Subaru/PFS (Prime Focus Spectrograph) with the MWA, LOFAR, HERA, and SKA interferometers for an integration time of 1000 h. We find that a Subaru–SKA survey could measure the cross-power spectrum for a late reionization at z = 6.6 with a total signal-to-noise ratio greater than 5, making it possible to constrain both the timing and bubble size at the end of reionization. Furthermore, we find that expanding the current Subaru/PFS survey area and depth by a factor of three would double the total signal-to-noise ratio.

scholarly journals The cross-power spectrum between 21 cm emission and galaxies in hierarchical galaxy formation models

2014 ◽  
Vol 438 (3) ◽  
pp. 2474-2482 ◽  
Author(s):  
Jaehong Park ◽  
Han-Seek Kim ◽  
J. Stuart B. Wyithe ◽  
C. G. Lacey
Keyword(s):  
Power Spectrum ◽  
Galaxy Formation ◽  
The Cross ◽  
Cross Power Spectrum

scholarly journals NOISE IN THE CROSS-POWER SPECTRUM OF THE VELA PULSAR

2012 ◽  
Vol 758 (1) ◽  
pp. 6 ◽  
Author(s):  
C. R. Gwinn ◽  
M. D. Johnson ◽  
J. E. Reynolds ◽  
D. L. Jauncey ◽  
A. K. Tzioumis ◽  
...  
Keyword(s):  
Power Spectrum ◽  
Vela Pulsar ◽  
The Cross ◽  
Cross Power Spectrum

scholarly journals On the two-step estimation of the cross-power spectrum for dynamical linear inverse problems

2020 ◽  
Vol 36 (4) ◽  
pp. 045010
Author(s):  
Elisabetta Vallarino ◽  
Sara Sommariva ◽  
Michele Piana ◽  
Alberto Sorrentino
Keyword(s):  
Inverse Problems ◽  
Power Spectrum ◽  
Linear Inverse Problems ◽  
The Cross ◽  
Two Step Estimation ◽  
Cross Power Spectrum

scholarly journals Cross-correlation between cosmological and astrophysical datasets: the Planck and Herschel case

2014 ◽  
Vol 10 (S306) ◽  
pp. 202-205 ◽  
Author(s):  
Federico Bianchini ◽  
Andrea Lapi
Keyword(s):  
Power Spectrum ◽  
Cross Correlation ◽  
Forthcoming Paper ◽  
Joint Analysis ◽  
Atlas Data ◽  
Λcdm Model ◽  
The Galaxy ◽  
The Cross ◽  
Galaxy Bias ◽  
Cross Power Spectrum

AbstractWe present the first measurement of the correlation between the map of the CMB lensing potential derived from the Planck nominal mission data and z ≳ 1.5 galaxies detected by Herschel-ATLAS (H-ATLAS) survey covering about 550 deg2. We detect the cross-power spectrum with a significance of ∼ 8.5σ, ruling out the absence of correlation at 9σ. We check detection with a number of null tests. The amplitude of cross-correlation and the galaxy bias are estimated using joint analysis of the cross-power spectrum and the galaxy survey auto-spectrum, which allows to break degeneracy between these parameters. The estimated galaxy bias is consistent with previous estimates of the bias for the H-ATLAS data, while the cross-correlation amplitude is higher than expected for a ΛCDM model. The content of this work is to appear in a forthcoming paper Bianchini, et al. (2014).

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