Study of UHECR deflections in the presence of the galactic magnetic field JF2012
DOI:
https://doi.org/10.47456/Cad.Astro.v5nEspecial.44960Keywords:
Extragalactic astrophysics, cosmic rays, magnetic fieldsAbstract
The production and acceleration of high-energy cosmic rays (Ultra-high energy cosmic rays - UHECR) in the Universe remains one of the great mysteries of modern science. The mechanisms of acceleration of highly energetic particles in astrophysical sources are still unknown. The main objective of this study was to explore the distribution of UHECR emission and arrival originating from radio galaxies. The radio galaxies Centaurus A, Fornax A and M87 were used as possible sources due to their correlation with the direction of arrival of events measured at the Pierre Auger Observatory. The detection potential of these particles was explored considering the effect of the Jansson-Farrar 2012 (JF2012) Galactic magnetic field model. The study of the influence of the magnetic field helps to understand the generation and propagation of UHECR. For the study, the computational program Cosmic Ray Transport (CRT) was used. The program does not consider energy losses, but was used to quantify particle deviations based on the following parameters: energy rigidity, distance from the source to the Earth, direction of the source in the sky and charge/mass of the particle to be propagated. The results obtained quantify the effect of the Galactic magnetic field in the different directions of radio galaxies and indicate that the Galactic field must be considered from energies close to 16 EeV.
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References
M. C. Bustamante, A descoberta dos raios cósmicos ou o problema da ionização do ar atmosférico, Revista Brasileira de Ensino de Física 35(2), 2603 (2013). Disponível em https://doi.org/10.1590/S1806-11172013000200030. DOI: https://doi.org/10.1590/S1806-11172013000200030
J. Linsley, Evidence for a Primary Cosmic-Ray Particle with Energy 1020 eV, Phys. Rev. Lett. 10, 146 (1963). Disponível em https://link.aps.org/doi/10.1103/PhysRevLett.10.146. DOI: https://doi.org/10.1103/PhysRevLett.10.146
R. Alves Batista et al., Open Questions in Cosmic-Ray Research at Ultrahigh Energies, Frontiers in Astronomy and Space Sciences 6 (2019). Disponível em http://dx.doi.org/10.3389/fspas.2019.00023. DOI: https://doi.org/10.3389/fspas.2019.00023
R. C. dos Anjos et al., Ultrahigh-energy cosmic ray composition from the distribution of arrival directions, Phys. Rev. D 98, 123018 (2018). Disponível em https://link.aps.org/doi/10.1103/PhysRevD.98.123018. DOI: https://doi.org/10.1103/PhysRevD.98.123018
J. H. Matthews et al., Fornax A, Centaurus A, and other radio galaxies as sources of ultrahigh energy cosmic rays, Monthly Notices of the Royal Astronomical Society 479(1), L76 (2018). ArXiv:1805.01902. DOI: https://doi.org/10.1093/mnrasl/sly099
Y. B. Bandeira e L. F. Mackedanz, Mecanismos de limitação da energia de raios cósmicos durante sua propagação, Revista Brasileira de Ensino de Física 41(4), e20190118 (2019). Disponível em https://doi.org/10.1590/1806-9126-RBEF-2019-0118. DOI: https://doi.org/10.1590/1806-9126-rbef-2019-0118
A. Castellina, AugerPrime: the Pierre Auger Observatory Upgrade, EPJ Web of Conferences 210, 06002 (2019). Disponível em http://dx.doi.org/10.1051/epjconf/201921006002. DOI: https://doi.org/10.1051/epjconf/201921006002
R. d. C. d. Anjos, Propagação de raios cósmicos extragaláticos., Tese de Doutorado, Tese (Doutorado em Física Básica) - Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos (2014).
J. P. Armand, Anisotropias no fluxo de Raios Cósmicos de Ultra Altas Energias. (2018).
F. M. Rieger, Active Galactic Nuclei as potential sources of ultra-high energy cosmic rays, Universe 8(11), 607 (2022). DOI: https://doi.org/10.3390/universe8110607
A. Keivani, G. R. Farrar e M. Sutherland, Magnetic deflections of ultra-high energy cosmic rays from Centaurus A, Astroparticle Physics 61, 47–55 (2015). Disponível em http://dx.doi.org/10.1016/j.astropartphys.2014.07.001. DOI: https://doi.org/10.1016/j.astropartphys.2014.07.001
S. R. Ehlert et al., Limits on X-Ray Polarization at the Core of Centaurus A as Observed with the Imaging X-Ray Polarimetry Explorer, The Astrophysical Journal 935(2), 116 (2022). Disponível em http://dx.doi.org/10.3847/1538-4357/ac8056. DOI: https://doi.org/10.3847/1538-4357/ac8056
B. Duah Asabere et al., Mid-infrared dust in two nearby radio galaxies, NGC 1316 (Fornax A) and NGC 612 (PKS 0131-36), Astronomy & Astrophysics 592, A20 (2016). Disponível em http://dx.doi.org/10.1051/0004-6361/201528047. DOI: https://doi.org/10.1051/0004-6361/201528047
C. d. OLIVEIRA, Fontes locais de raios cósmicos ultra energéticos. (2021).
G. Farrar, The Galactic Magnetic Field and its lensing of Ultrahigh Energy and Galactic Cosmic Rays, in IAU General Assembly (2015), vol. 29, 2258479. DOI: https://doi.org/10.1017/S1743921316006530
G. R. Farrar, The Galactic magnetic field and ultrahigh-energy cosmic ray deflections, Comptes Rendus Physique 15(4), 339 (2014), ultra-high-energy cosmic rays: From the ankle to the tip of the spectrum. Disponível em https://www.sciencedirect.com/science/article/pii/S1631070514000498. DOI: https://doi.org/10.1016/j.crhy.2014.04.002
M. Unger e G. Farrar, The coherent magnetic field of the Milky Way (2023). ArXiv:2311.12120.
R. Jansson e G. R. Farrar, The galactic magnetic field, The Astrophysical Journal 761(1), L11 (2012). Disponível em http://dx.doi.org/10.1088/2041-8205/761/1/L11. DOI: https://doi.org/10.1088/2041-8205/761/1/L11
R. Jansson e G. R. Farrar, A new model of the galactic magnetic field, The Astrophysical Journal 757(1), 14 (2012). ArXiv:1204.3662. DOI: https://doi.org/10.1088/0004-637X/757/1/14
M. S. Sutherland, B. M. Baughman e J. J. Beatty, CRT: A numerical tool for propagating ultra-high energy cosmic rays through Galactic magnetic field models, Astroparticle Physics 34(4), 198 (2010). ArXiv:1010.3172. DOI: https://doi.org/10.1016/j.astropartphys.2010.07.002
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