Deflections of UHECRs in the Galactic magnetic field

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00539838" target="_blank" >RIV/68378271:_____/19:00539838 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1475-7516/2019/05/004" target="_blank" >https://doi.org/10.1088/1475-7516/2019/05/004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1475-7516/2019/05/004" target="_blank" >10.1088/1475-7516/2019/05/004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Deflections of UHECRs in the Galactic magnetic field

Popis výsledku v původním jazyce

We report results of the first comprehensive, high resolution study of the deflections of UHECRs using a realistic model of the Galactic magnetic field and extending to sufficiently low rigidities, R (math)E/Z >= 10(18) V, to describe Fe in the UHE energy range above similar to 55 EeV, or the mixed composition reported by the Pierre Auger Collaboration at the energy of the observed dipole anisotropy. We use the Jansson-Farrar (JF12) model, which has both a large scale coherent and a structured random component, and determine deflections for fifteen rigidities from 10(18.0) to 10(20.0) V, for two different coherence length choices for the random component, L-coh = 30 pc and 100 pc. We also check the sensitivity of UHECR deflections to the particular realization of the random field, for 3 rigidity values. For each rigidity and field model studied, the UHECR arrival direction distribution is determined for an arbitrary source direction, by inverting the trajectories of > 5 x 10(7) isotropically-distributed anti-CRs of the given rigidity, which we backtrack using the code CRT. We present skyplots and tables characterizing the arrival directions, for representative 1 degrees sources.

Název v anglickém jazyce

Deflections of UHECRs in the Galactic magnetic field

Popis výsledku anglicky

We report results of the first comprehensive, high resolution study of the deflections of UHECRs using a realistic model of the Galactic magnetic field and extending to sufficiently low rigidities, R (math)E/Z >= 10(18) V, to describe Fe in the UHE energy range above similar to 55 EeV, or the mixed composition reported by the Pierre Auger Collaboration at the energy of the observed dipole anisotropy. We use the Jansson-Farrar (JF12) model, which has both a large scale coherent and a structured random component, and determine deflections for fifteen rigidities from 10(18.0) to 10(20.0) V, for two different coherence length choices for the random component, L-coh = 30 pc and 100 pc. We also check the sensitivity of UHECR deflections to the particular realization of the random field, for 3 rigidity values. For each rigidity and field model studied, the UHECR arrival direction distribution is determined for an arbitrary source direction, by inverting the trajectories of > 5 x 10(7) isotropically-distributed anti-CRs of the given rigidity, which we backtrack using the code CRT. We present skyplots and tables characterizing the arrival directions, for representative 1 degrees sources.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

—

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

e-ISSN

—

Svazek periodika

2019

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

55

Strana od-do

1-55

Kód UT WoS článku

000466899500002

EID výsledku v databázi Scopus

2-s2.0-85069652721