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Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)最新文献

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The Askaryan Radio Array (ARA) 阿斯卡良无线电阵列(ARA)
Pub Date : 2021-11-10 DOI: 10.22323/1.395.0014
K. Hoffman
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引用次数: 0
Rapporteur Talk: Gamma Ray Direct 报告员谈话:伽马射线直接
Pub Date : 2021-11-02 DOI: 10.22323/1.395.0045
R. Caputo
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引用次数: 2
The High Energy cosmic-Radiation Detection (HERD) facility on board the Chinese Space Station: hunting for high-energy cosmic rays 中国空间站上的高能宇宙辐射探测(HERD)设施:寻找高能宇宙射线
Pub Date : 2021-10-28 DOI: 10.22323/1.395.0026
F. Gargano
The High Energy cosmic-Radiation Detection (HERD) facility has been proposed as a space astronomy payload onboard the future China’s Space Station (CSS) aimed to detect charged cosmic-rays and gamma-rays from few GeV to PeV energies. The main science objectives of HERD are searching for dark matter particles, the study of cosmic ray chemical composition and high energy gamma-ray observations. HERDwill extend high precision and high statistics spectral measurements of individual cosmic ray species up to few PeV, reaching the knee of the all-particle spectrum. It will also observe the gamma-ray sky from a few hundred of MeV up to 1 TeV contributing to multi-messenger astronomy together with ground-based high energy gamma-ray telescope and neutrino and gravitational waves detectors.
高能宇宙辐射探测(HERD)设施已被提议作为未来中国空间站(CSS)上的空间天文学有效载荷,旨在探测从几GeV到PeV能量的带电宇宙射线和伽马射线。HERD的主要科学目标是寻找暗物质粒子,研究宇宙射线的化学成分和高能伽马射线的观测。herd将把对单个宇宙射线的高精度和高统计光谱测量扩展到几PeV,达到全粒子光谱的极限。它还将观测几百MeV到1 TeV的伽玛射线天空,与地面高能伽玛射线望远镜、中微子和引力波探测器一起,为多信使天文学做出贡献。
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引用次数: 14
CTA sensitivity for probing cosmology and fundamental physics with gamma rays 用伽马射线探测宇宙学和基础物理的CTA灵敏度
Pub Date : 2021-10-15 DOI: 10.22323/1.395.0894
I. Vovk, J. Biteau, H. Martínez-Huerta, M. Meyer, S. Pita
Institute for Cosmic Ray Research, The University of Tokyo 5-1-5 Kashiwa-no-Ha, Kashiwa City, Chiba, 277-8582, Japan Laboratoire de Physique des 2 Infinis Irène Joliot Curie, CNRS/IN2P3, Université Paris-Sud, Université Paris-Saclay, Orsay, France Department of Physics and Mathematics, Universidad de Monterrey, Av. Morones Prieto 4500, 66238, San Pedro Garza García NL, México University of Hamburg, Institute for Experimental Physics, Luruper Chaussee 149, D-22761 Hamburg, Germany APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Obs. de Paris, Sorbonne Paris Cité, France E-mail: vovk@icrr.u-tokyo.ac.jp, jbiteau.pro@gmail.com,
日本东京大学宇宙射线研究所,千叶市柏川市柏川市,277-8582,日本,法国,法国,法国,法国,蒙特雷大学物理与数学系,蒙特雷大学,莫罗内斯普列托4500,66238,圣佩德罗加萨García NL,德国,汉堡,汉堡,APC,巴黎狄德罗大学,CNRS/IN2P3, CEA/IRFU, Obs。E-mail: vovk@icrr.u-tokyo.ac.jp, jbiteau.pro@gmail.com,
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引用次数: 3
CTA – the World’s largest ground-based gamma-ray observatory CTA -世界上最大的地面伽玛射线天文台
Pub Date : 2021-10-12 DOI: 10.22323/1.395.0005
R. Zanin, H. Abdalla, H. Abe, S. Abe, A. Abusleme, F. Acero, A. Acharyya, V. Acin Portella, K. Ackley, R. Adam, C. Adams, S. S. Adhikari, I. Aguado Ruesga, I. Agudo, R. Aguilera, A. Aguirre Santaella, F. Aharonian, A. Alberdi, R. Alfaro, J. Alfaro, C. Alispach, R. Aloisio, R. Alves Batista, J. Amans, L. Amati, E. Amato, L. Ambrogi, G. Ambrosi, M. Ambrosio, R. Ammendola, J. Anderson, M. Anduze, E. Anguner, L. Antonelli, V. Antonuccio, P. Antoranz, R. Anutarawiramkul, J. Aragunde Gutierrez, C. Aramo, A. Araudo, M. Araya, A. Arbet Engels, C. Arcaro, V. Arendt, C. Armand, T. Armstrong, F. Arqueros, L. Arrabito, B. Arsioli, M. Artero, K. Asano, Y. Ascasibar, J. Aschersleben, M. Ashley, P. Attinà, P. Aubert, C. B. Singh, D. Baack, A. Babić, Michael Backes, V. Baena, S. Bajtlik, A. Baktash, C. Balazs, M. Balbo, O. Ballester, J. Ballet, B. Balmaverde, A. Bamba, R. Bandiera, A. Baquero Larriva, P. Barai, C. Barbier, V. Barbosa Martins, M. Barceló, M. Barkov, M. Barnard, L. Baroncelli, U. Barres de Almeida, J. Barr
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引用次数: 9
The effects of the GMF on the transition from Galactic to extragalactic cosmic rays GMF对从银河系到河外宇宙射线的转变的影响
Pub Date : 2021-10-12 DOI: 10.22323/1.395.0004
A. Kääpä, K. Kampert, E. Mayotte
Understanding the nature of the transition from Galactic to extragalactic cosmic rays (GCRs and EGCRs) has become especially challenging in light of recent spectral and composition data. Galactic contributions appear to be disfavoured at energies beyond the “second knee” where the composition becomes lighter. At the same time, a dominant EGCR contribution at the “2nd knee” appears unlikely. As a result, the measured flux in the transition region cannot easily be accounted for. With the model-dependence of proposed extensions to both the Galactic and extragalactic contributions, a deeper understanding of CR propagation, particularlywithin theGalacticmagnetic field (GMF), is in order. This is because propagation in this energy range shifts from diffusive to ballistic, which is expected to lead to a number of observable effects on CRs. Using CRPropa3, we study these effects for rigidities between 1016 and 1020 V. We identify various features at rigidities where the gyroradius is comparable to typical length scales of the Galaxy, suggesting causes related to changes in the propagation regime. We further quantify general modifications in the spectrum, composition and arrival direction of GCRs and EGCRs. We find that the GMF naturally induces a flux suppression of GCRs towards higher rigidities due to their increased leakage from the Galaxy. This, in consequence, would lead to an increase in the mean mass of GCR primaries up to energies around the “ankle” in the cosmic ray spectrum. It is also shown that the distribution of GCR arrival directions would be correlated with the Galactic plane for rigidities above 1017 V if sources are distributed evenly within the plane. EGCRs experience no flux modification in the GMF if injected isotropically. Injection of pure dipoles, as well as single source scenarios indicate that the GMF isotropises injected anisotropies below 1018 V, but can still cause flux modifications which depend on the direction of the anisotropy.
根据最近的光谱和成分数据,理解从银河系到河外宇宙射线(GCRs和EGCRs)转变的本质变得特别具有挑战性。星系的贡献在“第二膝盖”以外的能量上似乎不受欢迎,因为那里的成分变得更轻。与此同时,EGCR在“第二膝关节”的主要贡献似乎不太可能。因此,在过渡区测量的通量不容易解释。随着对银河系和星系外贡献的模型依赖性扩展,对CR传播的更深入理解,特别是在星系磁场(GMF)内,是有序的。这是因为在这个能量范围内的传播从扩散转变为弹道,这将导致对cr的许多可观察到的影响。使用CRPropa3,我们研究了在1016和1020 V之间的刚度的这些影响。我们确定了陀螺半径与银河系典型长度尺度相当的刚性的各种特征,表明与传播体制变化有关的原因。我们进一步量化了GCRs和EGCRs在光谱、组成和到达方向上的一般变化。我们发现,由于gcr从银河系中泄漏的增加,GMF自然地诱导了gcr向更高刚度方向的通量抑制。因此,这将导致GCR初级粒子的平均质量增加,直至宇宙射线光谱中“脚踝”附近的能量。在1017v以上的银河平面上,如果源均匀分布,GCR到达方向的分布将与银河平面相关。如果各向同性注射,egcr在GMF中没有通量改变。注入纯偶极子和单源情景表明,GMF各向同性注入了低于1018 V的各向异性,但仍会引起各向异性方向的通量修正。
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引用次数: 2
Rapporteur Talk: Cosmic Ray Direct 报告人谈话:宇宙射线直接
Pub Date : 2021-10-07 DOI: 10.22323/1.395.0044
P. Mertsch
This is the report on the cosmic ray direct track of the 37 th International Cosmic Ray Conference (ICRC 2021), broadly covering the contributions relating to charged cosmic rays (CRs) of Galactic origin. The contributions highlighted here are of both observational and theoretical nature and aim at interpreting the local fluxes of CRs as well as studying the wider dynamical effects of CRs. New data from space-borne experiments on CR electrons and positrons, proton and helium as well as heavier nuclei and their isotopes are reviewed. We cover some models of CR acceleration and their feedback on Galactic scales. Diffuse emission in 𝛾 -rays as far as it concerns the CR spectra in the immediate vicinity of the solar system and CR anisotropies are covered briefly. Some upcoming and proposed experiments are highlighted towards the end.
这是第37届国际宇宙射线大会(红十字国际委员会2021年)关于宇宙射线直接轨道的报告,广泛涵盖了与银河系起源的带电宇宙射线有关的贡献。这里强调的贡献既有观测性质,也有理论性质,目的是解释大气环流的局部通量,以及研究大气环流更广泛的动力学效应。综述了星载CR电子和正电子、质子和氦以及重核及其同位素实验的新数据。我们涵盖了一些CR加速模型及其在银河系尺度上的反馈。简述了射线漫射辐射与太阳系附近CR光谱的关系以及CR各向异性。最后,重点介绍了一些即将进行和提出的实验。
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引用次数: 3
Population Studies of Fermi LAT sources 费米LAT源的种群研究
Pub Date : 2021-10-01 DOI: 10.22323/1.395.0662
E. Orlando, Melissa Rasmussen, A. Strong
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引用次数: 0
Interstellar cosmic-ray spectra (1) just outside the heliosphere and (2) in the local medium: are they the same? (1)日球层外的星际宇宙射线光谱和(2)本地介质中的星际宇宙射线光谱:它们是一样的吗?
Pub Date : 2021-09-30 DOI: 10.22323/1.395.0141
E. Orlando
Interstellar cosmic ray (CR) spectra just outside the heliosphere are accessible thanks to direct measurements of CR, with uncertainties given by the solar modulation. Interstellar CR spectra in the local medium (i.e. within ~1 kpc around the Sun) are indirectly accessible thanks to observations of interstellar emissions in radio/microwaves and in gamma rays produced by CR interactions with the interstellar medium and the Galactic magnetic field. Observations of these interstellar emissions are an invaluable tool for understanding densities and spectra of CR in different places of our Galaxy. The derivation of these spectra depends on model assumptions. Until recently it was believed that CR as directly measured were resembling CR throughout the Galaxy, after accounting for solar modulation and propagation effects. However, present precise data are discordant and are posing significant challenges. Whether interstellar CR spectra just outside the heliosphere and in the local medium are the same is a question that has recently opened again. We present here our effort in answering this question and our recent results.
星际宇宙射线(CR)光谱就在日球层外,由于CR的直接测量,太阳调制给出了不确定性。星际CR光谱在局部介质(即在太阳周围~1 kpc范围内)可以间接获得,这要归功于对星际辐射的观测,包括无线电/微波以及CR与星际介质和银河系磁场相互作用产生的伽马射线。对这些星际辐射的观测是了解银河系不同地方CR密度和光谱的宝贵工具。这些光谱的推导依赖于模型假设。直到最近,人们才相信,在考虑了太阳调制和传播效应之后,直接测量到的CR与整个银河系的CR相似。然而,目前的精确数据是不一致的,并提出了重大挑战。日球层外的星际CR光谱和本地介质中的星际CR光谱是否相同,这是一个最近再次提出的问题。我们在此介绍我们为回答这个问题所作的努力和我们最近取得的成果。
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引用次数: 1
Rapporteur Talk: Gamma Ray Indirect 报告人谈话:伽马射线间接
Pub Date : 2021-09-29 DOI: 10.22323/1.395.0046
A. Mitchell
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引用次数: 0
期刊
Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)
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