Astroparticle Physics最新文献_第3页

Towards searching for photons with energies beyond the PeV range from galactic PeVatrons 从星系pevatron中寻找能量超过PeV范围的光子

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-12-19 DOI: 10.1016/j.astropartphys.2024.103074

M. Niechciol, C. Papior, M. Risse

{"title":"Towards searching for photons with energies beyond the PeV range from galactic PeVatrons","authors":"M. Niechciol, C. Papior, M. Risse","doi":"10.1016/j.astropartphys.2024.103074","DOIUrl":"10.1016/j.astropartphys.2024.103074","url":null,"abstract":"<div><div>Several gamma-ray observatories have discovered photons of cosmic origin with energies in the PeV (<span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>15</mn></mrow></msup><mspace></mspace><mi>eV</mi></mrow></math></span>) range. Photons at these energies might be produced as by-products from particle acceleration in so-called PeVatrons, which are widely assumed to be the sources of a large part of galactic cosmic rays. Based on recent measurements of these PeV <span><math><mi>γ</mi></math></span>-sources by LHAASO and HAWC, we extrapolate the energy spectra of selected sources up to the ultra-high-energy (UHE, <span><math><mrow><mo>≥</mo><mn>10</mn><mspace></mspace><mi>PeV</mi></mrow></math></span>) regime. The goal of this study is to evaluate if (and under what conditions) giant air-shower observatories, for example the Pierre Auger Observatory, could contribute to testing the UHE luminosity of PeV <span><math><mi>γ</mi></math></span>-sources. Possible propagation effects are investigated as well as the required discrimination power to distinguish photon- and hadron-initiated air showers. For present detector setups, it turns out to be challenging to achieve the required sensitivity due to the energy threshold being too high or the detection area too small. Dedicated detector concepts appear to be needed to explore the UHE frontier. Ultimately, this could provide complementary information on the sources of cosmic rays beyond the PeV regime—a key objective of current efforts in multimessenger astronomy.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"166 ","pages":"Article 103074"},"PeriodicalIF":4.2,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thin accretion disk and shadow of Kerr–Sen black hole in Einstein–Maxwell-dilaton–axion gravity 爱因斯坦-麦克斯韦膨胀-轴子引力中克尔-森黑洞的薄吸积盘和阴影

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-12-19 DOI: 10.1016/j.astropartphys.2024.103075

Haiyuan Feng , Rong-Jia Yang , Wei-Qiang Chen

{"title":"Thin accretion disk and shadow of Kerr–Sen black hole in Einstein–Maxwell-dilaton–axion gravity","authors":"Haiyuan Feng , Rong-Jia Yang , Wei-Qiang Chen","doi":"10.1016/j.astropartphys.2024.103075","DOIUrl":"10.1016/j.astropartphys.2024.103075","url":null,"abstract":"<div><div>We investigate the thin disk and shadow of Kerr–Sen black hole in Einstein–Maxwell-dilaton–axion gravity. The results reveal that as the dilaton parameter <span><math><msub><mrow><mi>r</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> increase, the energy flux, the radiation temperature, the spectra luminosity, and the radiative efficiency of the disk all increase. By narrowing down the dilaton parameter range to <span><math><mrow><mn>0</mn><mo>⩽</mo><mfrac><mrow><msub><mrow><mi>r</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><mi>M</mi></mrow></mfrac><mo>⩽</mo><mn>0</mn><mo>.</mo><mn>4</mn></mrow></math></span>, we discover that in the high-frequency region, the Kerr–Sen black hole demonstrates higher energy output compared to the Kerr black hole. We also investigated the shadow of Kerr–Sen black hole in a uniform plasma environment. For fixed inclination angle, dilaton, and spin parameters, the shadow increases as the homogeneous plasma parameter <span><math><mi>k</mi></math></span> increases. Conversely, when <span><math><mi>k</mi></math></span> and <span><math><mi>a</mi></math></span> are fixed, an increase in <span><math><msub><mrow><mi>r</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> leads to a decrease in the shadow. Finally, we constrain the model parameters with observational data from M87* and Sgr A*.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"166 ","pages":"Article 103075"},"PeriodicalIF":4.2,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isotropization and complexity based extended Krori–Barua and Tolman IV Rastall models under the effect of electromagnetic field 电磁场作用下基于各向同性和复杂性的扩展Krori-Barua和Tolman IV Rastall模型

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-12-12 DOI: 10.1016/j.astropartphys.2024.103073

Tayyab Naseer

{"title":"Isotropization and complexity based extended Krori–Barua and Tolman IV Rastall models under the effect of electromagnetic field","authors":"Tayyab Naseer","doi":"10.1016/j.astropartphys.2024.103073","DOIUrl":"10.1016/j.astropartphys.2024.103073","url":null,"abstract":"<div><div>Three different exact solutions to the gravitational equations are formulated in this paper in the context of Rastall theory using the gravitational decoupling strategy. For doing so, the anisotropic spherical interior fluid distribution is assumed as a seed source characterized by the corresponding Lagrangian. I then modify the field equations by introducing an additional source which is gravitationally coupled with the former fluid setup. Since this approach makes the Rastall equations more complex, I use the MGD scheme to tackle this, dividing these equations into two systems. The Krori–Barua and Tolman IV spacetimes are taken into account to solve the first system, describing an initial anisotropic fluid. The metric potentials associated with these solutions contain multiple constants which are determined with the help of boundary conditions. Furthermore, I work out the solution for the second system through different well-known constraints. Afterwards, the estimated data of a compact star <span><math><mrow><mi>L</mi><mi>M</mi><mi>C</mi><mspace></mspace><mi>X</mi><mo>−</mo><mn>4</mn></mrow></math></span> is considered to explore the feasibility of the developed solutions through graphical interpretation. It is concluded that all the resulting models show physically existing profiles under the variation of certain parameters.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"166 ","pages":"Article 103073"},"PeriodicalIF":4.2,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulating radio emission from particle cascades with CORSIKA 8 用CORSIKA 8模拟粒子级联的射电发射

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-12-08 DOI: 10.1016/j.astropartphys.2024.103072

J.M. Alameddine , J. Albrecht , J. Ammerman-Yebra , L. Arrabito , A.A. Alves Jr. , D. Baack , A. Coleman , H. Dembinski , D. Elsässer , R. Engel , A. Faure , A. Ferrari , C. Gaudu , C. Glaser , M. Gottowik , D. Heck , T. Huege , K.H. Kampert , N. Karastathis , L. Nellen , R. Ulrich

{"title":"Simulating radio emission from particle cascades with CORSIKA 8","authors":"J.M. Alameddine , J. Albrecht , J. Ammerman-Yebra , L. Arrabito , A.A. Alves Jr. , D. Baack , A. Coleman , H. Dembinski , D. Elsässer , R. Engel , A. Faure , A. Ferrari , C. Gaudu , C. Glaser , M. Gottowik , D. Heck , T. Huege , K.H. Kampert , N. Karastathis , L. Nellen , R. Ulrich","doi":"10.1016/j.astropartphys.2024.103072","DOIUrl":"10.1016/j.astropartphys.2024.103072","url":null,"abstract":"<div><div>CORSIKA 8 is a new framework for simulations of particle cascades in air and dense media implemented in modern C++17, based on past experience with existing codes, in particular CORSIKA 7. The flexible and modular structure of the project allows the development of independent modules that can produce a fully customizable particle shower simulation. The radio module in particular is designed to treat the electric field calculation and its propagation through complex media to each observer location in an autonomous and flexible way. It already allows for the simultaneous simulation of the radio emission calculated with two independent time-domain formalisms, the “Endpoint formalism” as previously implemented in CoREAS and the “ZHS” algorithm as ported from ZHAireS. The design acts as the baseline interface for current and future development for the simulation of radio emission from particle showers in standard and complex scenarios, such as cross-media showers penetrating from air into ice. In this work, we present the design and implementation of the radio module in CORSIKA 8, along with validation studies and a direct comparison of the radio emission from air showers simulated with CORSIKA 8, CORSIKA 7, and ZHAireS. We also present the impact of simulation details such as the step size of simulated particle tracks on radio-emission simulations and perform a direct comparison of the “Endpoints” and “ZHS” formalisms for the same underlying air showers. Finally, we present an in-depth comparison of CORSIKA 8 and CORSIKA 7 for optimum simulation settings and discuss the relevance of observed differences in light of reconstruction efforts for the energy and mass of cosmic rays.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"166 ","pages":"Article 103072"},"PeriodicalIF":4.2,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retraction Notice to “On the same origin of quantum physics and general relativity from Riemannian geometry and Planck scale formalism” [Astroparticle Physics, 164C (2025) - ASTPHY_103036] 关于“从黎曼几何和普朗克尺度形式论量子物理和广义相对论的同根论”的撤回通知[天体粒子物理，164C (2025) - ASTPHY_103036]

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-12-05 DOI: 10.1016/j.astropartphys.2024.103064

Chavis Srichan , Pobporn Danvirutai , Adrian David Cheok , Jun Cai , Ying Yan

引用次数: 0

Corrigendum to: “Modeling Hadronic Interactions in Ultra-High-Energy Cosmic Rays within Astrophysical Environments: A Parametric Approach” [Astroparticle Physics, Vol. 165 (2024), 103047] 更正："天体物理环境中超高能宇宙射线的强子相互作用建模：参数方法"[《天体粒子物理学》，第 165 卷（2024 年），103047 页］

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-11-23 DOI: 10.1016/j.astropartphys.2024.103063

Antonio Condorelli , Sergio Petrera

引用次数: 0

Candidate detection of GRB221009A by Yangbajing muon telescope 羊八井μ介子望远镜对 GRB221009A 的候选探测

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-11-07 DOI: 10.1016/j.astropartphys.2024.103062

F. Nozzoli

引用次数: 0

Gravitational lensing around dark matter in galactic halo region 银河晕区暗物质周围的引力透镜

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-11-03 DOI: 10.1016/j.astropartphys.2024.103061

Farook Rahaman, Anikul Islam

引用次数: 0

Cosmological study in Myrzakulov F(R,T) quasi-dilaton massive gravity 米尔扎库洛夫 F(R,T)准迪拉顿大质量引力中的宇宙学研究

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-10-28 DOI: 10.1016/j.astropartphys.2024.103060

Sobhan Kazempour , Amin Rezaei Akbarieh

{"title":"Cosmological study in Myrzakulov F(R,T) quasi-dilaton massive gravity","authors":"Sobhan Kazempour , Amin Rezaei Akbarieh","doi":"10.1016/j.astropartphys.2024.103060","DOIUrl":"10.1016/j.astropartphys.2024.103060","url":null,"abstract":"<div><div>This study explores the cosmological implications of the Myrzakulov <span><math><mrow><mi>F</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> quasi-dilaton massive gravity theory, a modification of the de Rham–Gabadadze–Tolley (dRGT) massive gravity theory. Our analysis focuses on the self-accelerating solution of the background equations of motion, which are shown to exist in the theory. Notably, we find that the theory features an effective cosmological constant corresponding to the massive graviton, which has important implications for our understanding of the universe’s accelerated expansion. To assess the validity of the Myrzakulov <span><math><mrow><mi>F</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> quasi-dilaton massive gravity theory, we employ two datasets: the Union2 Type Ia Supernovae (SNIa) dataset, consisting of 557 observations, and the Pantheon SNIa data, which includes 1048 SNe I-a events gathered from diverse SN I-a samples. Our results demonstrate that the theory is capable of explaining the accelerated expansion of the universe without requiring the presence of dark energy. This finding supports the potential of the Myrzakulov <span><math><mrow><mi>F</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> quasi-dilaton massive gravity theory as an alternative explanation for the observed cosmic acceleration. Moreover, we investigate the properties of tensor perturbations within the framework of this theory and derive a novel expression for the dispersion relation of gravitational waves. Our analysis reveals interesting features of the modified dispersion relation in the Friedmann–Lemaître–Robertson–Walker (FLRW) cosmology, providing new insights into the nature of gravitational waves in the context of the Myrzakulov <span><math><mrow><mi>F</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> quasi-dilaton massive gravity theory.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103060"},"PeriodicalIF":4.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Particle dynamics and quasi-periodic oscillations in the GUP-modified Schwarzschild spacetime: Constraint using micro-quasars data GUP修正的施瓦兹柴尔德时空中的粒子动力学和准周期振荡：利用微类星体数据的约束

IF 4.2 3区物理与天体物理

Astroparticle Physics Pub Date : 2024-10-22 DOI: 10.1016/j.astropartphys.2024.103056

Husanboy Hoshimov , Odil Yunusov , Farruh Atamurotov , Mubasher Jamil , Ahmadjon Abdujabbarov

引用次数: 0