activity
20082018
most citedAn Estimate of the Primordial Non-Gaussianity Parameter f_NL Using the Needlet Bispectrum from WMAP

78 citations · 191 across the 11 of their papers we have counts for

collaborators

13 papers

math.ST2018

Hitting Probability and the Hausdorff Measure of the Level sets for Spherical Gaussian Fields

Xiaohong Lan

Consider an isotropic spherical Gaussian random field T with values in R^{d}. We investigate two problems: (i) When is the level set T^{-1}(t) nonempty with positive probability fo…

math.PR2018

Regularity properties of the solution to a stochastic heat equation driven by a fractional Gaussian noise on

Xiaohong Lan, Yimin Xiao

We study the stochastic heat equation driven by an additive infinite dimensional fractional Brownian noise on the unit sphere . The existence and uniqueness of its…

math.PR2018★ 1 cited

Hölder Conditions of Local Times and Exact Moduli of non-differentiability for Spherical Gaussian fields

Xiaohong Lan, Yimin Xiao

This paper investigate the local times and modulus of nondifferentiability of the spherical Gaussian random fields. We extend the methods for studying the local times of Gaussian t…

math.ST2017

Strong Local Nondeterminism of Spherical Fractional Brownian Motion

Xiaohong Lan, Yimin Xiao

Let be the fractional Brownian motion indexed by the unit sphere with index , i…

math.PR2016

Strong Local Nondeterminism and Exact Modulus of Continuity for Spherical Gaussian Fields

Xiaohong Lan, Domenico Marinucci, Yimin Xiao

In this paper, we are concerned with sample path properties of isotropic spherical Gaussian fields on . In particular, we establish the property of strong local nondeterminism…

math.ST2013

High-Frequency Tail Index Estimation by Nearly Tight Frames

Claudio Durastanti, Xiaohong Lan

This work develops the asymptotic properties (weak consistency and Gaussianity), in the high-frequency limit, of approximate maximum likelihood estimators for the spectral paramete…