High order correction terms for the peak-peak correlation function in nearly-Gaussian models
نویسندگان
چکیده
منابع مشابه
High Order Correction Terms for The Peak - Peak Correlation Function in Nearly - Gaussian Models
Context. One possible way to investigate the nature of the primordial power spectrum fluctuations is by investigating the statistical properties of the local maximum in the density fluctuation fields. Aims. In this work we present a study of the mean correlation function, ξ r , and the correlation function for high amplitude fluctuations (peak-peak correlation) in a slighlty non-Gaussian contex...
متن کاملNon-Gaussianity in the WMAP data using the peak-peak correlation function
We present a search for non-Gaussianity in the WMAP first-year data using the twopoint correlation function of maxima and minima in the temperature map. We find evidence for non-Gaussianity on large scales, whose origin appears to be associated with unsubstracted foregrounds, but which is not entirely clear. The signal appears to be associated most strongly with cold spots, and is more pronounc...
متن کاملThe peak luminosity – peak energy correlation in GRBs
We derive the peak luminosity–peak energy (Liso–Epeak) correlation using 22 long Gamma– Ray Bursts (GRBs) with firm redshift measurements. We find that its slope is similar to the correlation between the time integrated isotropic emitted energy Eiso and Epeak (Amati et al. 2002). For the 15 GRBs in our sample with estimated jet opening angle we compute the collimation corrected peak luminosity ...
متن کاملMotion of the Acoustic Peak in the Correlation Function
The baryonic acoustic signature in the large-scale clustering pattern of galaxies has been detected in the two-point correlation function. Its precise spatial scale has been forwarded as a rigid-rod ruler test for the space-time geometry, and hence as a probe for tracking the evolution of dark energy. Percent-level shifts in the measured position can bias such a test and erode its power to cons...
متن کاملHigher order peak algebras
Using the theory of noncommutative symmetric functions, we introduce the higher order peak algebras (Sym(N))N≥1, a sequence of graded Hopf algebras which contain the descent algebra and the usual peak algebra as initial cases (N = 1 and N = 2). We compute their Hilbert series, introduce and study several combinatorial bases, and establish various algebraic identities related to the multisection...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20065581