On the measurement of the helicity of intergalactic magnetic fields using ultra-high-energy cosmic rays

被引：7

作者：

Batista, Rafael Alves ^{[1
]}

Saveliev, Andrey ^{[2
,3
]}

机构：

[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Rua Matao 1226, BR-05508090 Sao Paulo, SP, Brazil

[2] Immanuel Kant Balt Fed Univ, Inst Phys Math & Informat Technol, Ul Aleksandra Nevskogo 14, Kaliningrad 236041, Russia

[3] Lomonosov Moscow State Univ, Fac Computat Math & Cybernet, GSP-1,Leninskiye Gory 1-52, Moscow 119991, Russia

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2019年 / 03期

基金：

俄罗斯科学基金会; 巴西圣保罗研究基金会;

关键词：

extragalactic magnetic fields; magnetic fields; ultra high energy cosmic rays; ACTIVE GALACTIC NUCLEI; ARRIVAL DIRECTIONS; INDUCED ALIGNMENT; GAMMA-RAYS; ANISOTROPY; SEARCH; PROPAGATION; ORIGIN;

D O I：

10.1088/1475-7516/2019/03/011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The origin of the first magnetic fields in the Universe is a standing problem in cosmology. Intergalactic magnetic fields (IGMFs) may be an untapped window to the primeval Universe, providing further constrains on magnetogenesis. We demonstrate the feasibility of using ultra-high-energy cosmic rays (UHECRs) to constrain the helicity of IGMFs by performing simulations of cosmic-ray propagation in simple magnetic field con figurations. We show that the first harmonic moments of the arrival distribution of UHECRs may be used to measure the absolute value of the helicity and its sign.

引用

页数：26

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