Scale-adaptive filters for the detection/separation of compact sources

被引：49

作者：

Herranz, D

Sanz, JL

Barreiro, RB

Martínez-González, E

机构：

[1] Fac Ciencias, Inst Fis Cantabria, Santander 39005, Spain

[2] Univ Cantabria, Dept Fis Moderna, E-39005 Santander, Spain

[3] Cavendish Lab, Astrophys Grp, Cambridge CB3 0HE, England

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 580卷 / 01期

关键词：

methods : analytical; methods : data analysis; techniques : image processing;

D O I：

10.1086/342651

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper presents scale-adaptive filters that optimize the detection/separation of compact sources on a background. We assume that the sources have a multiquadric profile, i.e., tau(x) = [1 + (x/r(c))(2)](-lambda); lambda greater than or equal to 1/2; x = \x\, and a background modeled by a homogeneous and isotropic random field, characterized by a power spectrum P(q) proportional to q(-gamma), gamma greater than or equal to 0, q = \q\. We make an n-dimensional treatment but consider two interesting astrophysical applications related to clusters of galaxies (Sunyaev-Zeldovich effect and X-ray emission).

引用

收藏

页码：610 / 625

页数：16

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