Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)最新文献_第6页

Mass Composition of Cosmic Rays with Energies above 10$^{17.2}$ eV from the Hybrid Data of the Pierre Auger Observatory 来自皮埃尔·奥格天文台混合数据的能量大于10$^{17.2}$ eV的宇宙射线的质量组成

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-29 DOI: 10.22323/1.358.0482

A. Yushkov

{"title":"Mass Composition of Cosmic Rays with Energies above 10$^{17.2}$ eV from the Hybrid Data of the Pierre Auger Observatory","authors":"A. Yushkov","doi":"10.22323/1.358.0482","DOIUrl":"https://doi.org/10.22323/1.358.0482","url":null,"abstract":"We present updates on the measurements of the depth of the \u0000shower maximum $X_mathrm{max}$ and the correlation between $X_mathrm{max}$ and the \u0000signal in the water-Cherenkov stations of events registered \u0000simultaneously by the fluorescence and the surface \u0000detectors of the Pierre Auger Observatory. The measurements of $X_mathrm{max}$ \u0000are performed for $E > 10^{17.2}$ eV using observations of the \u0000longitudinal development of air showers by the fluorescence \u0000telescopes. The evolution of the mean and the fluctuations of $X_mathrm{max}$ \u0000with energy, as extracted from the data taken during $2004-2017$, is \u0000interpreted in terms of the evolution of the mean logarithmic mass \u0000and the spread of the masses in the primary beam using post-LHC \u0000hadronic interaction models. \u0000 \u0000The measurements of the correlation between $X_mathrm{max}$ and the signal in \u0000the surface stations allow one to obtain constraints on the spread \u0000of the masses in the primary beam. These constraints are weakly \u0000sensitive to the experimental systematic errors and to the \u0000uncertainties in the modelling of air showers. Previously, using \u0000data taken during $2004-2012$, we excluded with a significance of \u0000$5sigma$ pure compositions and compositions consisting of only \u0000protons and helium for energies $10^{18.5}-10^{19.0}$ eV. In the \u0000update of the analysis presented here using the data from years \u0000$2004-2017$ and nearly doubled statistics, these conclusions are \u0000confirmed with a significance $>6.4sigma$ in the energy range \u0000$10^{18.5}-10^{18.7}$ eV alone, while for higher energies the \u0000correlation in data becomes consistent with less mixed \u0000compositions.","PeriodicalId":166008,"journal":{"name":"Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131089727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 50

Obtaining a History of the Flux of Cosmic Rays using In Situ Cosmogenic $^{14}C$ Trapped in Polar Ice 利用在极地冰中捕获的原位宇宙成因$^{14}C$获得宇宙射线通量的历史

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-29 DOI: 10.22323/1.358.1056

S. BenZvi, V. Petrenko, B. Hmiel, M. Dyonisius, Andrew M. Smith, Bin Yang, Q. Hua

引用次数: 2

Probing High-Energy Hadronic Interactions with Extensive Air Showers 探测与广泛的空气阵雨高能强子相互作用

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-29 DOI: 10.22323/1.358.0005

L. Cazon

引用次数: 17

Occurrence of $^3$He-rich Solar Energetic Particles near Earth and Closer to the Sun 富$^3$氦的太阳高能粒子在地球附近和离太阳更近的地方的出现

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-29 DOI: 10.22323/1.358.1171

M. Wiedenbeck, G. Mason, C. Cohen, D. McComas, E. Christian

{"title":"Occurrence of $^3$He-rich Solar Energetic Particles near Earth and Closer to the Sun","authors":"M. Wiedenbeck, G. Mason, C. Cohen, D. McComas, E. Christian","doi":"10.22323/1.358.1171","DOIUrl":"https://doi.org/10.22323/1.358.1171","url":null,"abstract":"3He-rich solar energetic particle (SEP) events, which result from the acceleration of energetic particles in association with reconnection events on the Sun, are identified on the basis of 3He/4He enhancements of at least several orders of magnitude over the solar coronal value of ~0.04%. The ULEIS and SIS instruments on the Advanced Composition Explorer (ACE) have been measuring the occurrence of SEP 3He in the interplanetary medium near Earth over nearly two full solar cycles. The 3He isotope has been observed nearly 90% of the time at solar maximum, but no more than a few % of the time at solar minimum. NASA’s Parker Solar Probe (PSP) spacecraft was launched in August 2018 on a mission designed to include 24 close flybys of the Sun over seven years. PSP’s scientific objectives include the study of the acceleration and transport of 3He-rich SEPs, and the spacecraft carries a two-instrument suite, ISOIS, that has the capability to perform these studies. The first two orbits of PSP occurred under extremely quiet solar-minimum conditions, which will provide an opportunity to search for small 3He-rich SEP events in the previously unexplored region <0.2 AU from the Sun under conditions with extremely low energetic-particle backgrounds. We present an update of the long-term record of SEP 3He occurrence near 1 AU and, with this context, discuss some advances that can be expected from PSP.","PeriodicalId":166008,"journal":{"name":"Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123325934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Summary of the 36 th ICRC Gamma-ray Indirect sessions 红十字国际委员会第36届伽马射线间接会议摘要

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-29 DOI: 10.22323/1.358.0031

J. Sitarek

引用次数: 0

Science Case of a Scintillator and Radio Surface Array at IceCube 冰立方闪烁体和射电表面阵列的科学案例

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-29 DOI: 10.22323/1.358.0418

F. Schroder

{"title":"Science Case of a Scintillator and Radio Surface Array at IceCube","authors":"F. Schroder","doi":"10.22323/1.358.0418","DOIUrl":"https://doi.org/10.22323/1.358.0418","url":null,"abstract":"The upgrade of IceTop, the surface array of IceCube, by a hybrid array of scintillation and radio detectors is motivated by a rich science case. The scintillators will lower the threshold for the measurement of air showers to about 100 TeV, provide a more efficient veto of air showers for neutrino measurements, and improve the separation of the electromagnetic and muonic shower components due to the different responses of scintillators and ice-Cherenkov tanks. Furthermore, the scintillators will enable the calibration and compensation of the effect of snow accumulation above IceTop. The radio antennas will provide a calorimetric measurement of the electromagnetic shower component and a direct sensitivity to the shower maximum. Consequently, the combination of the existing ice-Cherenkov detectors in the ice and at the surface with the new scintillation and radio detectors at the surface will enable unprecedented accuracy for event-by-event mass classification in the PeV to EeV range. This will transform IceCube into the most accurate instrument for high-energy Galactic cosmic rays in the Southern Hemisphere. Hence, the hybrid array will make an important contribution to the main science case of IceCube of understanding the origin of cosmic rays. In addition to its cosmic-ray science goals, the hybrid array provides essential RD for IceCube-Gen2 which will feature a larger surface array, sophisticated timing and communication technology, and elevated surface structures. Moreover, the hybrid array will improve the understanding of the atmospheric background to the neutrino measurements suffering from uncertainties in the absolute flux and the mass composition, and from deficiencies of hadronic interaction models. Finally, the hybrid array opens new scientific opportunities, such as the searches for PeV gamma rays from the Galactic Center and for mass-dependent anisotropies, which both may lead to the discovery of the most energetic sources in the Milky Way.","PeriodicalId":166008,"journal":{"name":"Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129199212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Results from the First Missions of the JEM-EUSO Program JEM-EUSO计划第一次任务的结果

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-28 DOI: 10.22323/1.358.0251

F. Fenu

{"title":"Results from the First Missions of the JEM-EUSO Program","authors":"F. Fenu","doi":"10.22323/1.358.0251","DOIUrl":"https://doi.org/10.22323/1.358.0251","url":null,"abstract":"The origin of Ultra-High Energy Cosmic Rays (UHECRs) remains unsolved in contemporary astroparticle physics. The objective of the JEM-EUSO program is the realization of a space mission devoted to UHECR physics. Several detectors have been developed in this framework or are under development. EUSO–TA, installed at the Telescope Array site in Utah in 2013, is in operation. It has detected 9 UHECRs in coincidence with Telescope Array fluorescence detector at Black Rock Mesa. EUSO–Balloon flew on board a stratospheric balloon in August 2014. It measured the UV intensity on forests, lakes and cities as well as proved the observation of UHECR–like events reproduced by laser tracks. EUSO–SPB1 was launched on board a super pressure balloon on April 24th 2017 and flew for 12 days. It proved the functionality of all the subsystems of the telescope on a long term and observed the UV emission on oceans. TUS, on board the Lomonosov satellite, in orbit since April 28th 2016, is now included in the JEM–EUSO program and has detected so far in the UHECR trigger-mode a few interesting signals. Mini–EUSO is in its final phase of integration in Russia, and is scheduled for launch on August 22 nd. The main results obtained so far by these missions are summarized and put in the perspective offuture space detectors such as K–EUSO and POEMMA.","PeriodicalId":166008,"journal":{"name":"Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130976749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dependence of hadronic interaction models in atmospheric electric field simulations for GRAPES-3. 强子相互作用模式在GRAPES-3大气电场模拟中的依赖性。

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-28 DOI: 10.22323/1.358.0186

B. Hariharan, S. Ahmad, M. Chakraborty, A. Chandra, S. Dugad, S. Gupta, Y. Hayashi, S. Inbanathan, P. Jagadeesan, A. Jain, P. Jain, V. Jhansi, S. Kawakami, H. Kojima, S. Mahapatra, P. Mohanty, S. Morris, Y. Muraki, P. K. Nayak, A. Oshima, D. Pattanaik, P. Rakshe, K. Ramesh, B. Rao, L. V. Reddy, S. Sharma, S. Shibata, K. Tanaka, F. Varsi, M. Zuberi

{"title":"Dependence of hadronic interaction models in atmospheric electric field simulations for GRAPES-3.","authors":"B. Hariharan, S. Ahmad, M. Chakraborty, A. Chandra, S. Dugad, S. Gupta, Y. Hayashi, S. Inbanathan, P. Jagadeesan, A. Jain, P. Jain, V. Jhansi, S. Kawakami, H. Kojima, S. Mahapatra, P. Mohanty, S. Morris, Y. Muraki, P. K. Nayak, A. Oshima, D. Pattanaik, P. Rakshe, K. Ramesh, B. Rao, L. V. Reddy, S. Sharma, S. Shibata, K. Tanaka, F. Varsi, M. Zuberi","doi":"10.22323/1.358.0186","DOIUrl":"https://doi.org/10.22323/1.358.0186","url":null,"abstract":"The thunderstorm events observed by GRAPES-3 muon telescope can be studied with aid of Monte Carlo simulations. One such event observed on 1 December 2014 was analysed and its electrical properties of thundercloud were derived using muon imaging. This recent result showed production of Giga-Volt potential in thunderclouds, possibly responsible for production of 100 MeV $gamma$-rays in terrestrial $gamma$-ray flashes. However, these properties derived from simulations rely on choice of low and high energy hadronic interaction models used in CORSIKA. So, the derived properties are model dependent which makes this study very important. The comparison of various combinations using low and high energy hadronic models and its impact on electric potential estimation will be discussed in this work.","PeriodicalId":166008,"journal":{"name":"Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122951434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Test of validity of the Force-Field Approximation with AMS-02 and PAMELA Monthly Fluxes 用AMS-02和PAMELA月通量进行力场近似的有效性检验

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-28 DOI: 10.22323/1.358.1070

C. Corti, V. Bindi, C. Consolandi, C. Freeman, A. Kuhlman, C. Light, M. Palermo, Siqi Wang

引用次数: 3

Study Cosmic Ray Mass Composition using Deep Learning in Telescope Array Surface Array Detector 利用望远镜阵列表面阵列探测器的深度学习研究宇宙射线质量组成

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) Pub Date : 2019-08-28 DOI: 10.22323/1.358.0304

O. Kalashev, M. Kuznetsov

引用次数: 0