Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays

Recent measurements of the spectra and anisotropy of cosmic rays (CRs) show a fine structure that reflects the spectral hardenings of CRs nuclei at the rigidity <inline-formula<<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"<<semantics<<mrow...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Aifeng Li [verfasserIn] Shiyu Yin [verfasserIn] Maoyuan Liu [verfasserIn] Hao Wang [verfasserIn] Xiaoyu Li [verfasserIn] Yaping Li [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	cosmic ray anisotropy cosmic ray spectra Geminga supernova remnants local interstellar magnetic field

Übergeordnetes Werk:	In: Universe - MDPI AG, 2015, 8(2022), 6, p 307
Übergeordnetes Werk:	volume:8 ; year:2022 ; number:6, p 307

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/universe8060307

Katalog-ID:	DOAJ02556899X

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source	In Universe 8(2022), 6, p 307 volume:8 year:2022 number:6, p 307
sourceStr	In Universe 8(2022), 6, p 307 volume:8 year:2022 number:6, p 307
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authorswithroles_txt_mv	Aifeng Li @@aut@@ Shiyu Yin @@aut@@ Maoyuan Liu @@aut@@ Hao Wang @@aut@@ Xiaoyu Li @@aut@@ Yaping Li @@aut@@
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callnumber-first	Q - Science
author	Aifeng Li
spellingShingle	Aifeng Li misc QC793-793.5 misc cosmic ray anisotropy misc cosmic ray spectra misc Geminga supernova remnants misc local interstellar magnetic field misc Elementary particle physics Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays
authorStr	Aifeng Li
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topic_title	QC793-793.5 Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays cosmic ray anisotropy cosmic ray spectra Geminga supernova remnants local interstellar magnetic field
topic	misc QC793-793.5 misc cosmic ray anisotropy misc cosmic ray spectra misc Geminga supernova remnants misc local interstellar magnetic field misc Elementary particle physics
topic_unstemmed	misc QC793-793.5 misc cosmic ray anisotropy misc cosmic ray spectra misc Geminga supernova remnants misc local interstellar magnetic field misc Elementary particle physics
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title	Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays
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title_full	Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays
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title_sort	interpretation of the spectra and anisotropy of galactic cosmic rays
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title_auth	Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays
abstract	Recent measurements of the spectra and anisotropy of cosmic rays (CRs) show a fine structure that reflects the spectral hardenings of CRs nuclei at the rigidity <inline-formula<<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"<<semantics<<mrow<<mi mathvariant="script"<R</mi<</mrow<</semantics<</math<</inline-formula< ∼ 200 GV followed by softenings at <inline-formula<<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"<<semantics<<mrow<<mi mathvariant="script"<R</mi<</mrow<</semantics<</math<</inline-formula< ∼ 10 TV, and reveal complicated energy dependence of the amplitude and phase of anisotropy from 100 GeV to PeV. Numerous studies have shown that the existence of nearby CR sources and a local interstellar magnetic field (LIMF) near the solar system are crucial for such CR spectral and anisotropic patterns. In this work, we analyze the CR spectra of different CR components and the anisotropy considering the nearby Geminga supernova remnants (SNRs) source. In the calculation process, we also introduce the anisotropic diffusion of CRs induced by the LIMF based on the spatial-dependent propagation (SDP) model. As a result, our model can simultaneously account for the CR spectra and the anisotropy from 100 GeV to PeV. Future high-precision measurements of the CR anisotropy, for example, by the LHAASO experiment, would be of the essence in the assessment of our proposed model.
abstractGer	Recent measurements of the spectra and anisotropy of cosmic rays (CRs) show a fine structure that reflects the spectral hardenings of CRs nuclei at the rigidity <inline-formula<<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"<<semantics<<mrow<<mi mathvariant="script"<R</mi<</mrow<</semantics<</math<</inline-formula< ∼ 200 GV followed by softenings at <inline-formula<<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"<<semantics<<mrow<<mi mathvariant="script"<R</mi<</mrow<</semantics<</math<</inline-formula< ∼ 10 TV, and reveal complicated energy dependence of the amplitude and phase of anisotropy from 100 GeV to PeV. Numerous studies have shown that the existence of nearby CR sources and a local interstellar magnetic field (LIMF) near the solar system are crucial for such CR spectral and anisotropic patterns. In this work, we analyze the CR spectra of different CR components and the anisotropy considering the nearby Geminga supernova remnants (SNRs) source. In the calculation process, we also introduce the anisotropic diffusion of CRs induced by the LIMF based on the spatial-dependent propagation (SDP) model. As a result, our model can simultaneously account for the CR spectra and the anisotropy from 100 GeV to PeV. Future high-precision measurements of the CR anisotropy, for example, by the LHAASO experiment, would be of the essence in the assessment of our proposed model.
abstract_unstemmed	Recent measurements of the spectra and anisotropy of cosmic rays (CRs) show a fine structure that reflects the spectral hardenings of CRs nuclei at the rigidity <inline-formula<<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"<<semantics<<mrow<<mi mathvariant="script"<R</mi<</mrow<</semantics<</math<</inline-formula< ∼ 200 GV followed by softenings at <inline-formula<<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"<<semantics<<mrow<<mi mathvariant="script"<R</mi<</mrow<</semantics<</math<</inline-formula< ∼ 10 TV, and reveal complicated energy dependence of the amplitude and phase of anisotropy from 100 GeV to PeV. Numerous studies have shown that the existence of nearby CR sources and a local interstellar magnetic field (LIMF) near the solar system are crucial for such CR spectral and anisotropic patterns. In this work, we analyze the CR spectra of different CR components and the anisotropy considering the nearby Geminga supernova remnants (SNRs) source. In the calculation process, we also introduce the anisotropic diffusion of CRs induced by the LIMF based on the spatial-dependent propagation (SDP) model. As a result, our model can simultaneously account for the CR spectra and the anisotropy from 100 GeV to PeV. Future high-precision measurements of the CR anisotropy, for example, by the LHAASO experiment, would be of the essence in the assessment of our proposed model.
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container_issue	6, p 307
title_short	Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays
url	https://doi.org/10.3390/universe8060307 https://doaj.org/article/17a735e7a7f44053b2891f77e71d4bd8 https://www.mdpi.com/2218-1997/8/6/307 https://doaj.org/toc/2218-1997
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up_date	2024-07-03T15:47:23.479Z
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Interpretation of the Spectra and Anisotropy of Galactic Cosmic Rays

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