Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field

The origin and composition of ultrahigh energy cosmic rays (UHECRs) remains a mystery. The common lore is that UHECRs are deflected from their primary directions by the Galactic and extragalactic magnetic fields. Here we describe an extragalactic contribution to the deflection of UHECRs that does no...

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Detalles Bibliográficos
Autores principales: Garcia, Andres Aramburo, Bondarenko, Kyrylo, Boyarsky, Alexey, Nelson, Dylan, Pillepich, Annalisa, Sokolenko, Anastasia
Lenguaje:eng
Publicado: 2021
Materias:
astro-ph.HE
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.104.083017
http://cds.cern.ch/record/2751422
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author Garcia, Andres Aramburo
Bondarenko, Kyrylo
Boyarsky, Alexey
Nelson, Dylan
Pillepich, Annalisa
Sokolenko, Anastasia
author_facet Garcia, Andres Aramburo
Bondarenko, Kyrylo
Boyarsky, Alexey
Nelson, Dylan
Pillepich, Annalisa
Sokolenko, Anastasia
author_sort Garcia, Andres Aramburo
collection CERN
description The origin and composition of ultrahigh energy cosmic rays (UHECRs) remains a mystery. The common lore is that UHECRs are deflected from their primary directions by the Galactic and extragalactic magnetic fields. Here we describe an extragalactic contribution to the deflection of UHECRs that does not depend on the strength and orientation of the initial seed field. Using the IllustrisTNG simulations, we show that outflow-driven magnetic bubbles created by feedback processes during galaxy formation deflect approximately half of all <math display="inline"><mrow><msup><mrow><mn>10</mn></mrow><mrow><mn>20</mn></mrow></msup><mtext> </mtext><mtext> </mtext><mi>eV</mi></mrow></math> protons by 1° or more, and up to 20°–30°. This implies that the deflection in the intergalactic medium must be taken into account in order to identify the sources of UHECRs.
id cern-2751422
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-27514222022-01-20T07:12:11Zdoi:10.1103/PhysRevD.104.083017http://cds.cern.ch/record/2751422engGarcia, Andres AramburoBondarenko, KyryloBoyarsky, AlexeyNelson, DylanPillepich, AnnalisaSokolenko, AnastasiaUltrahigh energy cosmic ray deflection by the intergalactic magnetic fieldastro-ph.HEAstrophysics and AstronomyThe origin and composition of ultrahigh energy cosmic rays (UHECRs) remains a mystery. The common lore is that UHECRs are deflected from their primary directions by the Galactic and extragalactic magnetic fields. Here we describe an extragalactic contribution to the deflection of UHECRs that does not depend on the strength and orientation of the initial seed field. Using the IllustrisTNG simulations, we show that outflow-driven magnetic bubbles created by feedback processes during galaxy formation deflect approximately half of all <math display="inline"><mrow><msup><mrow><mn>10</mn></mrow><mrow><mn>20</mn></mrow></msup><mtext> </mtext><mtext> </mtext><mi>eV</mi></mrow></math> protons by 1° or more, and up to 20°–30°. This implies that the deflection in the intergalactic medium must be taken into account in order to identify the sources of UHECRs.The origin and composition of ultra-high energy cosmic rays (UHECRs) remain a mystery. The common lore is that UHECRs are deflected from their primary directions by the Galactic and extragalactic magnetic fields. Here we describe an extragalactic contribution to the deflection of UHECRs that does not depend on the strength and orientation of the initial seed field. Using the IllustrisTNG simulations, we show that outflow-driven magnetic bubbles created by feedback processes during galaxy formation deflect approximately half of all $10^{20}$ eV protons by $1^{\circ}$ or more, and up to $20$-$30^{\circ}$. This implies that the deflection in the intergalactic medium must be taken into account in order to identify the sources of UHECRs.arXiv:2101.07207oai:cds.cern.ch:27514222021-01-18
spellingShingle astro-ph.HE
Astrophysics and Astronomy
Garcia, Andres Aramburo
Bondarenko, Kyrylo
Boyarsky, Alexey
Nelson, Dylan
Pillepich, Annalisa
Sokolenko, Anastasia
Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
title Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
title_full Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
title_fullStr Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
title_full_unstemmed Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
title_short Ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
title_sort ultrahigh energy cosmic ray deflection by the intergalactic magnetic field
topic astro-ph.HE
Astrophysics and Astronomy
url https://dx.doi.org/10.1103/PhysRevD.104.083017
http://cds.cern.ch/record/2751422
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AT boyarskyalexey ultrahighenergycosmicraydeflectionbytheintergalacticmagneticfield
AT nelsondylan ultrahighenergycosmicraydeflectionbytheintergalacticmagneticfield
AT pillepichannalisa ultrahighenergycosmicraydeflectionbytheintergalacticmagneticfield
AT sokolenkoanastasia ultrahighenergycosmicraydeflectionbytheintergalacticmagneticfield

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