Large scale magnetic fields and the number of cosmic ray sources above the Greisen-Zatsepin-Kuzmin cutoff

被引：24

作者：

Isola, C ^{[1
]}

Sigl, G

机构：

[1] Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France

[2] CNRS, Inst Astrophys Paris, GReCO, F-75014 Paris, France

来源：

PHYSICAL REVIEW D | 2002年 / 66卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.66.083002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present numerical simulations for the two-point correlation function and the angular power spectrum of nucleons above 10(19) eV injected by a discrete distribution of continuously emitting sources which follow a simple approximation to the profile of the Local Supercluster. We develop a method to constrain the number of sources necessary to reproduce the observed sky distribution of ultrahigh energy cosmic rays, as a function of the strength of the large scale cosmic magnetic fields in the Local Supercluster. While for fields Bless than or similar to0.05 muG the Supercluster source distribution appears inconsistent with the data for any number of sources, fields of strength Bsimilar or equal to0.3 muG could reproduce the observed data with a number of sources around 10.

引用

页数：10

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