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Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)最新文献

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Long-term monitoring of the radio-galaxy M87 in gamma-rays: joint analysis of MAGIC, VERITAS and Fermi-LAT data 伽马射线中射电星系M87的长期监测:MAGIC, VERITAS和Fermi-LAT数据的联合分析
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-14 DOI: 10.22323/1.444.0572
Miguel Molero Gonzalez, L. Fortson, M. Nievas, E. Pueschel, Deivid Ribeiro, Mónica Vázquez, P. Batista
{"title":"Long-term monitoring of the radio-galaxy M87 in gamma-rays: joint analysis of MAGIC, VERITAS and Fermi-LAT data","authors":"Miguel Molero Gonzalez, L. Fortson, M. Nievas, E. Pueschel, Deivid Ribeiro, Mónica Vázquez, P. Batista","doi":"10.22323/1.444.0572","DOIUrl":"https://doi.org/10.22323/1.444.0572","url":null,"abstract":"M87 was discovered in the very-high-energy band (VHE, E>100 GeV) with HEGRA in 2003, long before its emission was detected in the high-energy band (HE, E>100 MeV) with Fermi-LAT in 2009, opening the window to a new family of extragalactic sources with tilted jets. After a series of major VHE flares in 2005, 2008, and 2010, which were detected in multiple bands, the source has been found in a low activity state, interrupted only by comparatively smaller-scale flares. MAGIC and VERITAS, two stereoscopic Cherenkov telescope arrays located at Roque de los Muchachos Observatory (Canary Islands, Spain) and the Fred Lawrence Whipple Observatory (Arizona, US), have monitored M87 continuously and in coordination for more than 10 years. In this work, we present the data for 4 years of MAGIC and VERITAS observations corresponding to 2019, 2020, 2021 and 2022. The resulting light curves are shown in daily and monthly scales where no significant variability is observed. In addition, we show the first joint analysis using combined event data from the two VHE instruments and Fermi-LAT to compute the spectral energy distribution.","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129794076","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
Modelling the X-Ray Emission from the Magnetar Wind Nebula around Swift J1834.9-0846 模拟雨燕J1834.9-0846周围磁星风星云的x射线发射
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-13 DOI: 10.22323/1.444.0895
Be Li
{"title":"Modelling the X-Ray Emission from the Magnetar Wind Nebula around Swift J1834.9-0846","authors":"Be Li","doi":"10.22323/1.444.0895","DOIUrl":"https://doi.org/10.22323/1.444.0895","url":null,"abstract":"The extended X-ray emission around Swift J1834.9-0846 observed with XMM-Newton was recently identified to be the first magnetar wind nebula. The high X-ray efficiency of this nebula indicates that it may not be predominately powered by rotational energy of magnetar, but its internal magnetic energy released during burst activities. Similar to the case of rotation-powered pulsars, the energetic particle outflow injected from the magnetar propagates downstream of the termination shock and produces non-thermal radiations through interactions with the interstellar medium. The observed photon index softening towards the outer nebula was attributed to the cooling of relativistic electrons, which could provide useful information about particle transport in the nebula. In this work, we reanalyzed the XMM-Newton observations taken in 2014, and then developed a spatially dependent model to simulate the X-ray emission from the magnetar wind nebula. The fitting results favor the magnetic origin of the magnetar wind nebula. We also found that the observations could be well explained by the model without particle diffusion, indicating advection dominates particle transport in this nebula.","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123326354","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
Opening new windows for SiPMs in space experiments with the BETA ASIC 用BETA ASIC为SiPMs在空间实验中打开了新的窗口
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-11 DOI: 10.22323/1.444.0085
Marina Orta, D. Guberman, R. Català, A. Comerma, A. Espinya, S. Gómez, J. Mauricio, A. Sanmukh, A. Sanuy, J. Bosch, G. Lucchetta, J. Rico, P. Azzarello, J. M. Frieden, C. Perrina, D. Sukhonos, X. Wu, C. Altomare, F. Gargano, M. Mazziotta, D. Serini, D. Gascón
{"title":"Opening new windows for SiPMs in space experiments with the BETA ASIC","authors":"Marina Orta, D. Guberman, R. Català, A. Comerma, A. Espinya, S. Gómez, J. Mauricio, A. Sanmukh, A. Sanuy, J. Bosch, G. Lucchetta, J. Rico, P. Azzarello, J. M. Frieden, C. Perrina, D. Sukhonos, X. Wu, C. Altomare, F. Gargano, M. Mazziotta, D. Serini, D. Gascón","doi":"10.22323/1.444.0085","DOIUrl":"https://doi.org/10.22323/1.444.0085","url":null,"abstract":"Compactness, robustness and low-voltage operation are some of the characteristics that make silicon photomultipliers (SiPMs) attractive for space applications. Signals recorded by SiPMs on board satellites must be processed and digitized minimizing the size, cost and power consumption of the electronics.","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131514431","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
Search for High Energy Electron Neutrinos from GRB221009A through Horizontal Air Showers with LHAASO-KM2A LHAASO-KM2A通过水平空气簇雨搜寻来自GRB221009A的高能电子中微子
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-11 DOI: 10.22323/1.444.1119
Ziqing Yang
{"title":"Search for High Energy Electron Neutrinos from GRB221009A through Horizontal Air Showers with LHAASO-KM2A","authors":"Ziqing Yang","doi":"10.22323/1.444.1119","DOIUrl":"https://doi.org/10.22323/1.444.1119","url":null,"abstract":"","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116005330","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
Measurement of very-high-energy diffuse gamma-ray emission from |b|<5 degree of the Galactic plane with LHAASO-WCDA 用LHAASO-WCDA测量银河面<5度的高能漫射伽马射线发射
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-11 DOI: 10.22323/1.444.0672
Huicai Li
{"title":"Measurement of very-high-energy diffuse gamma-ray emission from |b|<5 degree of the Galactic plane with LHAASO-WCDA","authors":"Huicai Li","doi":"10.22323/1.444.0672","DOIUrl":"https://doi.org/10.22323/1.444.0672","url":null,"abstract":"","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116875739","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
Control noise reduction of cryogenic suspension in KAGRA 控制KAGRA低温悬浮液的降噪
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-11 DOI: 10.22323/1.444.1566
Masahide Tamaki
{"title":"Control noise reduction of cryogenic suspension in KAGRA","authors":"Masahide Tamaki","doi":"10.22323/1.444.1566","DOIUrl":"https://doi.org/10.22323/1.444.1566","url":null,"abstract":"In gravitational wave detectors, the laser is used to observe how the distance between mirrors changes due to space distortions caused by gravitational waves. The displacement of the mirrors is minute, so the mirrors must be sufficiently isolated from ground vibrations to achieve the required sensitivity. Therefore, the main mirrors are suspended by nine-stage pendulums in KAGRA, the gravitational wave detector in Japan. In such a pendulum-based vibration isolator, the mirror oscillates significantly at the resonant frequency. Hence we need the control system to damp the resonances, but the noise from the sensors used in such a control system can be a problem. In fact, the sensitivity of KAGRA was limited by the noise from the cryogenic payload control system at 10-50 Hz in the previous observation. Therefore, a low-noise control filter was designed and implemented for use during the previous observing run. As a result, the control noise of the cryogenic payload at 10-100 Hz was reduced by 2-3 orders of magnitude, and the target sensitivity for the O4 observing run was achieved at low frequency (below 100 Hz).","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124167355","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
IXPE view of the Crab pulsar wind nebula 蟹状星云脉冲星风星云的IXPE影像
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-10 DOI: 10.22323/1.444.0630
T. Mizuno, Hiroshi Ohno, E. Watanabe, N. Bucciantini, S. Gunji, S. Shibata, P. Slane, M. Weisskopf
{"title":"IXPE view of the Crab pulsar wind nebula","authors":"T. Mizuno, Hiroshi Ohno, E. Watanabe, N. Bucciantini, S. Gunji, S. Shibata, P. Slane, M. Weisskopf","doi":"10.22323/1.444.0630","DOIUrl":"https://doi.org/10.22323/1.444.0630","url":null,"abstract":"We report a detailed study of the magnetic-field structure of the Crab pulsar wind nebula, using the X-ray polarization data in 2–8 keV obtained with the Imaging X-ray Polarimetry Explorer. Contamination of the pulsar emission to the data of the nebula region was removed through application of a stringent pulsation phase-cut, extracting a phase range of 0.7–1.0 only. We found that the electric field vector polarization angle (PA) was about 130 ◦ from north to east with the polarization degree (PD) of about 25% at the pulsar position, indicating that the direction of the toroidal magnetic field is perpendicular to the pulsar spin axis in the region close to the termination shock. The PA gradually deviated from the angle as an increasing function of the distance from the pulsar. There was a region of a low PD to the west of the X-ray torus. By comparing the values of the PD at the pulsar position between the data and a model, in which toroidal and turbulent magnetic fields were considered, we estimated the fractional energy of the turbulent magnetic field to be about 2 / 3 of the total","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127564512","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
Quantum kinetic equations with flavor and particle-antiparticle coherences for neutrinos 具有风味的量子动力学方程和中微子的粒子-反粒子相干
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-10 DOI: 10.22323/1.444.1127
K. Kainulainen, H. Parkkinen
{"title":"Quantum kinetic equations with flavor and particle-antiparticle coherences for neutrinos","authors":"K. Kainulainen, H. Parkkinen","doi":"10.22323/1.444.1127","DOIUrl":"https://doi.org/10.22323/1.444.1127","url":null,"abstract":"We develop a formalism to model neutrino evolution encompassing both flavor and particle-antiparticle mixings and decohering collisions. Our results include a quantum kinetic equation (a set of coupled scalar equations) for the generalized neutrino density matrix, valid for arbitrary neutrino masses and kinematics, and a comprehensive set of Feynman rules to compute collision integrals for coherently evolving states. We expose a novel shell structure describing the phase space of mixing neutrinos and show how the prior information on the system can enter into the theory and modify the neutrino flavor evolution. Potential applications of our results include modelling neutrino distributions in hot and dense environments and studies of neutrino mixing effects in colliders and in the early Universe.","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132706244","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
Observation of the Lamb wave created by the eruption of the Hunga volcano using cosmic rays detected by the HAWC observatory 利用HAWC天文台探测到的宇宙射线对亨加火山喷发产生的兰姆波的观测
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-10 DOI: 10.22323/1.444.0295
A. Sandoval
{"title":"Observation of the Lamb wave created by the eruption of the Hunga volcano using cosmic rays detected by the HAWC observatory","authors":"A. Sandoval","doi":"10.22323/1.444.0295","DOIUrl":"https://doi.org/10.22323/1.444.0295","url":null,"abstract":"The explosion of the Hunga volcano on January 15, 2022 created a pressure wave that circled the globe several times. The HAWC water Cherenkov detectors saw very clear variations in the count rate of particles from atmospheric showers for four passes of the pressure wave above the site in central Mexico, at 4,100 m altitude, being at a distance of 10,000 km from the volcano. Combined with the local pressure measurements we see a perfect anti correlation of the pressure profile with the count rate profile, but the barometric coefficient is different for the single particle count rate to that of the cosmic ray showers. The shape of the count rate variations for the first pass are different than the pressure variations at lower altitudes reported worldwide, but it agrees remarkable well with the barometric measurements done very close to the volcano in the Tonga island. For details see: https:/","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132136862","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
Design and Detection Mechanism for Gamma Rays and Antimatter Particles by a LArTPC Detector Towards Future GRAMS Mission 面向未来gram任务的LArTPC探测器伽玛射线和反物质粒子的设计和探测机制
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023) Pub Date : 2023-08-10 DOI: 10.22323/1.444.0848
J. Leyva
{"title":"Design and Detection Mechanism for Gamma Rays and Antimatter Particles by a LArTPC Detector Towards Future GRAMS Mission","authors":"J. Leyva","doi":"10.22323/1.444.0848","DOIUrl":"https://doi.org/10.22323/1.444.0848","url":null,"abstract":"The upcoming GRAMS (Gamma-Ray and AntiMatter Survey) experiment aims to provide unprecedented sensitivity to a poorly explored region of the cosmic gamma-ray spectrum from 0.1-100 MeV, often referred to as the “MeV gap”. In addition to gamma rays, the ability to detect cosmic antimatter makes GRAMS an excellent candidate for a nearly ‘background free’ indirect dark matter search. Utilizing Liquid Argon Time Projection Chamber (LArTPC) technology to detect MeV gamma rays and antimatter, GRAMS has the potential to uncover crucial details behind a variety of processes in multi-messenger astrophysics. In this poster session, the design and detection mechanism for a proof-of-concept detector called MicroGRAMS will be covered. This detector’s primary use is to evaluate the performance of the GRAMS charge and light collection systems and demonstrate the detection concept for gamma rays and antimatter particles.","PeriodicalId":448458,"journal":{"name":"Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129852305","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
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