Astroparticle Physics最新文献

{"title":"New high-precision measurement system for electron–positron pairs from sub-GeV/GeV gamma-rays in the emulsion telescope","authors":"Yuya Nakamura ,&nbsp;Shigeki Aoki ,&nbsp;Tomohiro Hayakawa ,&nbsp;Atsushi Iyono ,&nbsp;Ayaka Karasuno ,&nbsp;Kohichi Kodama ,&nbsp;Ryosuke Komatani ,&nbsp;Masahiro Komatsu ,&nbsp;Masahiro Komiyama ,&nbsp;Kenji Kuretsubo ,&nbsp;Toshitsugu Marushima ,&nbsp;Syota Matsuda ,&nbsp;Kunihiro Morishima ,&nbsp;Misaki Morishita ,&nbsp;Naotaka Naganawa ,&nbsp;Mitsuhiro Nakamura ,&nbsp;Motoya Nakamura ,&nbsp;Takafumi Nakamura ,&nbsp;Noboru Nakano ,&nbsp;Toshiyuki Nakano ,&nbsp;Masahiro Yoshimoto","doi":"10.1016/j.astropartphys.2024.103055","DOIUrl":"10.1016/j.astropartphys.2024.103055","url":null,"abstract":"<div><div>The GRAINE project observes cosmic gamma-rays, using a balloon-borne emulsion-film-based telescope in the sub-GeV/GeV energy band. We reported in our previous balloon experiment in 2018, GRAINE2018, the detection of the known brightest source, Vela pulsar, with the highest angular resolution ever reported in an energy range of <span><math><mo>&gt;</mo></math></span>80<!--> <!-->MeV. However, the emulsion scanning system used in the experiment was designed to achieve a high-speed scanning, and it was not accurate enough to ensure the optimum spatial resolution of the emulsion film and limited the performance. Here, we report a new high-precision scanning system that can be used to greatly improve the observation result of GRAINE2018 and also be employed in future experiments. The scanning system involves a new algorithm that recognizes each silver grain on an emulsion film and is capable of measuring tracks with a positional resolution for the passing points of tracks of almost the same as the intrinsic resolution of nuclear emulsion film (<span><math><mo>∼</mo></math></span>70 nm). This resolution is approximately one order of magnitude smaller than that obtained with the high-speed scanning system. With this scanning system, an angular resolution for gamma-rays of 0.1° at 1<!--> <!-->GeV is expected to be achieved. Furthermore, we successfully combine the new high-precision scanning system with the existing high-speed scanning system, enabling the high-speed and high-precision measurements. Employing these techniques, we reanalyze the gamma-ray events detected previously by only the high-speed scanning system in GRAINE2018 and obtain an about three times higher angular resolution (0.22°) in the 500–700<!--> <!-->MeV energy range. Adopting this technique in future observations may provide new insights into the gamma-ray emission from the Galactic center region and may realize polarization measurements of high-energy cosmic gamma-rays.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103055"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527268","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}

{"title":"Non-parametric analysis for the dark matter density evolution","authors":"Z.C. Santana ,&nbsp;R.F.L. Holanda ,&nbsp;R. Silva","doi":"10.1016/j.astropartphys.2024.103052","DOIUrl":"10.1016/j.astropartphys.2024.103052","url":null,"abstract":"<div><div>In this paper, we investigate a potential departure in the standard dark matter density evolution law, <span><math><mrow><msub><mrow><mi>ρ</mi></mrow><mrow><mi>d</mi><mi>m</mi></mrow></msub><mo>=</mo><msub><mrow><mi>ρ</mi></mrow><mrow><mi>d</mi><mi>m</mi><mo>,</mo><mn>0</mn></mrow></msub><msup><mrow><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>z</mi><mo>)</mo></mrow></mrow><mrow><mn>3</mn></mrow></msup></mrow></math></span>. The method involves considering a deformed evolution model, denoted as <span><math><mrow><msub><mrow><mi>ρ</mi></mrow><mrow><mi>d</mi><mi>m</mi></mrow></msub><mo>=</mo><msub><mrow><mi>ρ</mi></mrow><mrow><mi>d</mi><mi>m</mi><mo>,</mo><mn>0</mn></mrow></msub><msup><mrow><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>z</mi><mo>)</mo></mrow></mrow><mrow><mn>3</mn></mrow></msup><mi>f</mi><mrow><mo>(</mo><mi>z</mi><mo>)</mo></mrow></mrow></math></span>, and searching for the presence of any deviation (<span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>z</mi><mo>)</mo></mrow><mo>≠</mo><mn>1</mn></mrow></math></span>). As one may see, <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>z</mi><mo>)</mo></mrow></mrow></math></span> is a general function that parametrizes a possible digression from the standard law. We use data of baryon acoustic oscillations, type I Supernovae luminosity distances, and galaxy cluster gas mass fraction observations to reconstruct <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>z</mi><mo>)</mo></mrow></mrow></math></span> through an approach that is not dependent on the cosmological model or the so-called Gaussian process regression. Unlike previous works, it enables us to investigate a possible deviation without using a specific function to describe it. We have obtained <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>z</mi><mo>)</mo></mrow><mo>=</mo><mn>1</mn></mrow></math></span>, the standard model scenario, within <span><math><mrow><mn>2</mn><mi>σ</mi></mrow></math></span> c.l. in all the considered cases.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103052"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313019","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}

{"title":"Gravitational lensing around dark matter in galactic halo region","authors":"Farook Rahaman,&nbsp;Anikul Islam","doi":"10.1016/j.astropartphys.2024.103061","DOIUrl":"10.1016/j.astropartphys.2024.103061","url":null,"abstract":"<div><div>The presence of dark matter in the galactic region has decisively confirmed by astronomical observations , however, the characteristics of dark matter yet to be recognized correctly. Utilizing the Einstein’s general theory of relativity and the observed rotational curve profile as input, we point out some features of galactic dark matter. Usually, dark matter is not directly visible but affects the lensing. In this paper, the deflection of a massive particle by galactic dark matter is studied using the Jacobi metric approach. We also provide a brief analysis of the image features of the deflection angle.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103061"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660694","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}

{"title":"Impact of charge on the stability of pulsar SAX J1748.9-2021 in modified symmetric teleparallel gravity","authors":"M. Sharif,&nbsp;Madiha Ajmal","doi":"10.1016/j.astropartphys.2024.103054","DOIUrl":"10.1016/j.astropartphys.2024.103054","url":null,"abstract":"<div><div>In this paper, we explore the effect of charge on the stability of pulsar star SAX J1748.9-2021 in <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow></mrow></math></span> gravity, where <span><math><mi>Q</mi></math></span> represents non-metricity. For this purpose, we apply the Krori–Barua metric ansatz with anisotropic fluid and use a linear <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow></mrow></math></span> model <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow><mo>=</mo><mi>ζ</mi><mi>Q</mi></mrow></math></span>, where <span><math><mi>ζ</mi></math></span> is a non-zero constant. We derive exact relativistic solutions of the corresponding field equations. Furthermore, we study its geometric and physical properties through astrophysical observations from the pulsar SAX J1748.9-2021, which is found in X-ray binary systems within globular clusters. We examine features like anisotropic pressure, the mass–radius relationship, redshift, the Zeldovich condition, energy and causality conditions, the adiabatic index, the Tolman–Oppenheimer–Volkoff equation, the equation of state parameter and compactness. Our findings align with the observational data which indicate that the pulsar SAX J1748.9-2021 is viable and stable under this modified theory of gravity.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103054"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527267","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}

{"title":"The EUSO-SPB2 fluorescence telescope for the detection of Ultra-High Energy Cosmic Rays","authors":"James H. Adams Jr. ,&nbsp;Denis Allard ,&nbsp;Phillip Alldredge ,&nbsp;Luis Anchordoqui ,&nbsp;Anna Anzalone ,&nbsp;Matteo Battisti ,&nbsp;Alexander A. Belov ,&nbsp;Mario Bertaina ,&nbsp;Peter F. Bertone ,&nbsp;Sylvie Blin-Bondil ,&nbsp;Julia Burton ,&nbsp;Francesco S. Cafagna ,&nbsp;Marco Casolino ,&nbsp;Karel Černý ,&nbsp;Mark J. Christl ,&nbsp;Roberta Colalillo ,&nbsp;Hank J. Crawford ,&nbsp;Alexandre Creusot ,&nbsp;Austin Cummings ,&nbsp;Rebecca Diesing ,&nbsp;Roy Young","doi":"10.1016/j.astropartphys.2024.103046","DOIUrl":"10.1016/j.astropartphys.2024.103046","url":null,"abstract":"<div><div>The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) flew on May 13th and 14th of 2023. Consisting of two novel optical telescopes, the payload utilized next-generation instrumentation for the observations of extensive air showers from near space. One instrument, the fluorescence telescope (FT) searched for Ultra-High Energy Cosmic Rays (UHECRs) by recording the atmosphere below the balloon in the near-UV with a <span><math><mrow><mn>1</mn><mspace></mspace><mi>μ</mi><mi>s</mi></mrow></math></span> time resolution using 108 multi-anode photomultiplier tubes with a total of 6912 channels. Validated by pre-flight measurements during a field campaign, the energy threshold was estimated around 2 EeV with an expected event rate of approximately 1 event per 10 h of observation. Based on the limited time afloat, the expected number of UHECR observations throughout the flight is between 0 and 2. Consistent with this expectation, no UHECR candidate events have been found. The majority of events appear to be detector artifacts that were not rejected properly due to a shortened commissioning phase. Despite the earlier-than-expected termination of the flight, data were recorded which provide insights into the detectors stability in the near-space environment as well as the diffuse ultraviolet emissivity of the atmosphere, both of which are impactful to future experiments.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103046"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313018","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}

{"title":"Corrigendum to: “Modeling Hadronic Interactions in Ultra-High-Energy Cosmic Rays within Astrophysical Environments: A Parametric Approach” [Astroparticle Physics, Vol. 165 (2024), 103047]","authors":"Antonio Condorelli ,&nbsp;Sergio Petrera","doi":"10.1016/j.astropartphys.2024.103063","DOIUrl":"10.1016/j.astropartphys.2024.103063","url":null,"abstract":"","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103063"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705567","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}

{"title":"PSF calibration of DAMPE for gamma-ray observations","authors":"Kai-Kai Duan ,&nbsp;Zhao-Qiang Shen ,&nbsp;Zun-Lei Xu ,&nbsp;Wei Jiang ,&nbsp;Xiang Li","doi":"10.1016/j.astropartphys.2024.103058","DOIUrl":"10.1016/j.astropartphys.2024.103058","url":null,"abstract":"<div><div>The DArk Matter Particle Explorer (DAMPE) is dedicated to exploring critical scientific domains including the indirect detection of dark matter, cosmic ray physics, and gamma ray astronomy. This study introduces a novel method for calibrating the Point Spread Function (PSF) of DAMPE, specifically designed to enhance the accuracy of gamma-ray observations. By leveraging data from regions near pulsars and bright Active Galactic Nuclei (AGNs), we have refined the PSF calibration process, resulting in an improved angular resolution that closely matches our observational data. This advancement significantly boosts the precision of gamma-ray detection by DAMPE, thereby contributing to its mission objectives in dark matter detection and gamma ray astronomy.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103058"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142526864","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}

{"title":"An end-to-end calibration of the Mini-EUSO detector in space","authors":"M. Battisti ,&nbsp;M. Bertaina ,&nbsp;E. Parizot ,&nbsp;M. Abrate ,&nbsp;D. Barghini ,&nbsp;A. Belov ,&nbsp;F. Bisconti ,&nbsp;C. Blaksley ,&nbsp;S. Blin ,&nbsp;F. Capel ,&nbsp;M. Casolino ,&nbsp;I. Churilo ,&nbsp;A.G. Coretti ,&nbsp;M. Crisconio ,&nbsp;C. De La Taille ,&nbsp;T. Ebisuzaki ,&nbsp;F. Fenu ,&nbsp;M.A. Franceschi ,&nbsp;C. Fuglesang ,&nbsp;S. Gallian ,&nbsp;M. Zotov","doi":"10.1016/j.astropartphys.2024.103057","DOIUrl":"10.1016/j.astropartphys.2024.103057","url":null,"abstract":"<div><div>Mini-EUSO is a wide Field-of-View (44<span><math><mrow><msup><mrow></mrow><mrow><mo>∘</mo></mrow></msup><mo>×</mo><mn>4</mn><msup><mrow><mn>4</mn></mrow><mrow><mo>∘</mo></mrow></msup></mrow></math></span>) telescope currently in operation from a nadir-facing Ultra-Violet (UV) transparent window in the Russian Zvezda module on the International Space Station (ISS). Mini-EUSO has been designed as a scaled-down version of the original JEM-EUSO telescope to raise its instrumentation’s technological readiness level and demonstrate its observational principle, while performing multidisciplinary studies on different fields such as atmospheric science and planetology. One of Mini-EUSO main goals is the study of the UV background for future space missions employing the same concept as the original JEM-EUSO telescope, which requires an absolute calibration of the Mini-EUSO instrument. During the past years, a few observational campaigns have been completed, employing a ground-based UV flasher to perform an end-to-end calibration of the instrument. In this paper, we present the assembled UV flasher system, the operation of the field campaign and the analysis of the obtained data. The results are interpreted by the means of a parametrization of the Mini-EUSO photon counts. The end-to-end efficiency of several pixels has been obtained, taking into account different parameters such as the atmospheric attenuation, the optics efficiency and the multi-anode photomultiplier detection efficiency.</div></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"165 ","pages":"Article 103057"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527269","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}

{"title":"Solar flare observations with the Radio Neutrino Observatory Greenland (RNO-G)","authors":"S. Agarwal ,&nbsp;J.A. Aguilar ,&nbsp;S. Ali ,&nbsp;P. Allison ,&nbsp;M. Betts ,&nbsp;D. Besson ,&nbsp;A. Bishop ,&nbsp;O. Botner ,&nbsp;S. Bouma ,&nbsp;S. Buitink ,&nbsp;M. Cataldo ,&nbsp;B.A. Clark ,&nbsp;A. Coleman ,&nbsp;K. Couberly ,&nbsp;S. de Kockere ,&nbsp;K.D. de Vries ,&nbsp;C. Deaconu ,&nbsp;M.A. DuVernois ,&nbsp;C. Glaser ,&nbsp;T. Glüsenkamp ,&nbsp;A. Zink","doi":"10.1016/j.astropartphys.2024.103024","DOIUrl":"10.1016/j.astropartphys.2024.103024","url":null,"abstract":"<div><p>The Radio Neutrino Observatory – Greenland (RNO-G) seeks discovery of ultra-high energy neutrinos from the cosmos through their interactions in ice. The science program extends beyond particle astrophysics to include radioglaciology and, as we show herein, solar observations, as well. Currently seven of 35 planned radio-receiver stations (24 antennas/station) are operational. These stations are sensitive to impulsive radio signals with frequencies between 80 and 700 MHz and feature a neutrino trigger threshold for recording data close to the thermal floor. RNO-G can also trigger on elevated signals from the Sun, resulting in nanosecond resolution time-domain flare data; such temporal resolution is significantly shorter than from most dedicated solar observatories. In addition to possible RNO-G solar flare polarization measurements, the Sun also represents an extremely useful above-surface calibration source.</p><p>Using RNO-G data recorded during the summers of 2022 and 2023, we find signal excesses during solar flares reported by the solar-observing Callisto network and also in coincidence with <span><math><mo>∼</mo></math></span>2/3 of the brightest excesses recorded by the SWAVES satellite. These observed flares are characterized by significant time-domain impulsivity. Using the known position of the Sun, the flare sample is used to calibrate the RNO-G absolute pointing on the radio signal arrival direction to sub-degree resolution. We thus establish the Sun as a regularly observed astronomical calibration source to provide the accurate absolute pointing required for neutrino astronomy.</p></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"164 ","pages":"Article 103024"},"PeriodicalIF":4.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0927650524001014/pdfft?md5=f876aff9a99915b0bc2280db28087cf9&pid=1-s2.0-S0927650524001014-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933628","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}

{"title":"Constraining cosmological parameters with viscous modified chaplygin gas and generalized cosmic chaplygin gas models in Horava–Lifshitz gravity: Utilizing late-time datasets","authors":"Sayani Maity ,&nbsp;Himanshu Chaudhary ,&nbsp;Ujjal Debnath ,&nbsp;S.K. Maurya ,&nbsp;G. Mustafa","doi":"10.1016/j.astropartphys.2024.103026","DOIUrl":"10.1016/j.astropartphys.2024.103026","url":null,"abstract":"<div><p>This study investigates accelerated cosmic expansion using the Viscous Modified Chaplygin Gas (VMMG) and Generalized Cosmic Chaplygin Gas (GCCM) within Horava–Lifshitz gravity. Our primary objective is to constrain essential cosmological parameters, such as the Hubble Parameter (<span><math><msub><mrow><mi>H</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span>) and Sound Horizon (<span><math><msub><mrow><mi>r</mi></mrow><mrow><mi>d</mi></mrow></msub></math></span>). We incorporate recent datasets comprising 17 Baryon Acoustic Oscillation observations, 33 Cosmic Chronometer measurements, 40 Type Ia Supernovae data points, 24 quasar Hubble diagram data points, and 162 Gamma Ray Bursts data points. Additionally, we integrate the most recent determination of the Hubble constant (R22). We treat <span><math><msub><mrow><mi>r</mi></mrow><mrow><mi>d</mi></mrow></msub></math></span> as a free parameter, which offers several advantages, including mitigating bias, enhancing precision, and improving compatibility with various datasets. Consequently, by introducing random correlations in the covariance matrix during simulation, errors are effectively reduced. Our estimated values of the Hubble constant (<span><math><msub><mrow><mi>H</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span>) and <span><math><msub><mrow><mi>r</mi></mrow><mrow><mi>d</mi></mrow></msub></math></span> consistently align with measurements from both the Planck and SDSS experiments. Additionally, cosmographic tests offer valuable insights into the dynamics of various cosmological models, enriching our understanding of cosmic evolution. Statefinder diagnostics provide deeper insights into cosmic expansion dynamics, aiding in distinguishing between both cosmological frameworks. Furthermore, the <span><math><msub><mrow><mi>o</mi></mrow><mrow><mi>m</mi></mrow></msub></math></span> diagnostic test reveals that at late times, the VMMG model falls into the phantom region, while the Generalized GCCM falls into the quintessence region. Finally, the Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC) provide support for all models under consideration, indicating that each model offers a plausible explanation. Notably, the <span><math><mi>Λ</mi></math></span>CDM model emerges with the lowest AIC score, suggesting its relatively superior fit compared to others. Additionally, validation through the reduced <span><math><msubsup><mrow><mi>χ</mi></mrow><mrow><mtext>red</mtext></mrow><mrow><mn>2</mn></mrow></msubsup></math></span> statistic confirms satisfactory fits across all models, further reinforcing their credibility in explaining the observed data.</p></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"164 ","pages":"Article 103026"},"PeriodicalIF":4.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0927650524001038/pdfft?md5=92e1d74b1f3b180d7074a5a2c0483df1&pid=1-s2.0-S0927650524001038-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933629","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}