Journal of Cosmology and Astroparticle Physics最新文献_第6页

COSINUS model-independent sensitivity to the DAMA/LIBRA dark matter signal 与COSINUS模型无关的DAMA/LIBRA暗物质信号灵敏度

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-23 DOI: 10.1088/1475-7516/2025/09/072

G. Angloher, M.R. Bharadwaj, A. Böhmer, M. Cababie, I. Colantoni, I. Dafinei, N. Di Marco, C. Dittmar, L. Einfalt, F. Ferella, F. Ferroni, S. Fichtinger, A. Filipponi, T. Frank, M. Friedl, Z. Ge, M. Heikinheimo, M.N. Hughes, K. Huitu, M. Kellermann, R. Maji, M. Mancuso, L. Pagnanini, F. Petricca, S. Pirro, F. Pröbst, G. Profeta, A. Puiu, F. Reindl, K. Schäffner, J. Schieck, P. Schreiner, C. Schwertner, K. Shera, M. Stahlberg, A. Stendahl, M. Stukel, C. Tresca, F. Wagner, S. Yue, V. Zema, Y. Zhu and The COSINUS collaboration

{"title":"COSINUS model-independent sensitivity to the DAMA/LIBRA dark matter signal","authors":"G. Angloher, M.R. Bharadwaj, A. Böhmer, M. Cababie, I. Colantoni, I. Dafinei, N. Di Marco, C. Dittmar, L. Einfalt, F. Ferella, F. Ferroni, S. Fichtinger, A. Filipponi, T. Frank, M. Friedl, Z. Ge, M. Heikinheimo, M.N. Hughes, K. Huitu, M. Kellermann, R. Maji, M. Mancuso, L. Pagnanini, F. Petricca, S. Pirro, F. Pröbst, G. Profeta, A. Puiu, F. Reindl, K. Schäffner, J. Schieck, P. Schreiner, C. Schwertner, K. Shera, M. Stahlberg, A. Stendahl, M. Stukel, C. Tresca, F. Wagner, S. Yue, V. Zema, Y. Zhu and The COSINUS collaboration","doi":"10.1088/1475-7516/2025/09/072","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/09/072","url":null,"abstract":"COSINUS is a dark matter direct detection experiment using NaI crystals as cryogenic scintillating calorimeters. If no signal is observed, this will constrain the dark matter scattering rate in sodium iodide. We investigate how this constraint can be used to infer that the annual modulation signal observed in the DAMA/LIBRA experiment cannot originate from dark matter nuclear recoil events, independently of the dark matter model. We achieve this by unfolding the DAMA modulation spectrum to obtain the implied unquenched nuclear recoil spectrum, which we then compare to the expected COSINUS sensitivity. We find that assuming zero background in the signal region, a 1σ, 2σ or 3σ confidence limit exclusion can be obtained with 57, 130 or 250 kg day of exposure, respectively. A simple background model indicates that in the presence of background, the exposure requirements may increase by ∼ 30%.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"11 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Map-level baryonification: unified treatment of weak lensing two-point and higher-order statistics 图级重子化：弱透镜两点和高阶统计量的统一处理

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-23 DOI: 10.1088/1475-7516/2025/09/073

Alan Junzhe Zhou, Marco Gatti, Dhayaa Anbajagane, Scott Dodelson, Matthieu Schaller and Joop Schaye

{"title":"Map-level baryonification: unified treatment of weak lensing two-point and higher-order statistics","authors":"Alan Junzhe Zhou, Marco Gatti, Dhayaa Anbajagane, Scott Dodelson, Matthieu Schaller and Joop Schaye","doi":"10.1088/1475-7516/2025/09/073","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/09/073","url":null,"abstract":"Precision cosmology benefits from extracting maximal information from cosmic structures, motivating the use of higher-order statistics (HOS) at small spatial scales. However, predicting how baryonic processes modify matter statistics at these scales has been challenging. The baryonic correction model (BCM) addresses this by modifying dark-matter-only simulations to mimic baryonic effects, providing a flexible, simulation-based framework for predicting both two-point and HOS. We show that a 3-parameter version of the BCM can jointly fit weak lensing maps' two-point statistics, wavelet phase harmonics coefficients, scattering coefficients, and the third and fourth moments to within 2% accuracy across all scales ℓ < 2000 and tomographic bins for a DES-Y3-like redshift distribution (z ≲ 2), using the FLAMINGO simulations. These results demonstrate the viability of BCM-assisted, simulation-based weak lensing inference of two-point and HOS, paving the way for robust cosmological constraints that fully exploit non-Gaussian information on small spatial scales.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"26 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dark matter spikes with strongly self-interacting particles 暗物质与强自相互作用的粒子形成尖峰

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-23 DOI: 10.1088/1475-7516/2025/09/074

Boris Betancourt Kamenetskaia, Motoko Fujiwara, Alejandro Ibarra and Takashi Toma

引用次数: 0

Exploring the evolution of red and blue galaxies in different cosmic web environments using IllustrisTNG simulation 使用IllustrisTNG模拟在不同的宇宙网络环境中探索红色和蓝色星系的演化

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-22 DOI: 10.1088/1475-7516/2025/09/071

Biswajit Pandey and Anindita Nandi

{"title":"Exploring the evolution of red and blue galaxies in different cosmic web environments using IllustrisTNG simulation","authors":"Biswajit Pandey and Anindita Nandi","doi":"10.1088/1475-7516/2025/09/071","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/09/071","url":null,"abstract":"We analyze the evolution of red and blue galaxies in different cosmic web environments from redshift z = 3 to z = 0 using the IllustrisTNG simulation. We use Otsu's method to classify the red or blue galaxies at each redshift and determine their geometric environments from the eigenvalues of the deformation tensor. Our analysis shows that initially, blue galaxies are more common in clusters followed by filaments, sheets and voids. However, this trend reverses at lower redshifts, with red fractions rising earlier in denser environments. At z < 1, most massive galaxies (log(M*/M⊙) > 10.5) are quenched across all environments. In contrast, low-mass galaxies (log(M*/M⊙) < 10.5) are more influenced by their environment, with clusters hosting the highest red galaxy fractions at low redshifts. We observe a slower mass growth for low-mass galaxies in clusters at z < 1. Filaments show relative red fractions (RRF) comparable to clusters at low masses, but host nearly 60% of low-mass blue galaxies, representing a diverse galaxy population. It implies that less intense environmental quenching in filaments allows galaxies to experience a broader range of evolutionary stages. Despite being the densest environment, clusters display the highest relative blue fraction (RBF) for high-mass galaxies, likely due to interactions or mergers that can temporarily rejuvenate star formation in some of them. The (u-r) colour distribution transitions from unimodal to bimodal by redshift z = 2 across all environments. At z < 1, clusters exhibit the highest median colour, with stellar mass being the primary driver of colour evolution in massive galaxies. The suppression of star formation rate (SFR) and specific SFR (sSFR) is also most pronounced in clusters during this period. Our study suggests that stellar mass governs quenching in high-mass galaxies, while a complex interplay of mass and environment shapes the evolution of low-mass galaxies.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"16 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Viscosity in isotropic cosmological backgrounds in general relativity and Starobinsky gravity 广义相对论和斯塔宾斯基引力中各向同性宇宙学背景下的粘度

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-22 DOI: 10.1088/1475-7516/2025/09/065

Eliseo Pavone and Luigi Tedesco

{"title":"Viscosity in isotropic cosmological backgrounds in general relativity and Starobinsky gravity","authors":"Eliseo Pavone and Luigi Tedesco","doi":"10.1088/1475-7516/2025/09/065","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/09/065","url":null,"abstract":"We present a general analysis of the role of shear viscosity in cosmological backgrounds, focusing on isotropic space-time in both Einstein and f(R) gravity. By computing the divergence of the stress-energy tensor in a general class of isotropic (but not necessarily homogeneous) geometries, we show that shear viscosity does not contribute to the background dynamics when the fluid is comoving. This result holds in both the Jordan and Einstein frames, and implies that shear viscosity cannot affect the electromagnetic luminosity distance which is determined by the background light-like geodesics. As an application of our results, we critically examine recent claims that shear viscosity can alter the Hubble evolution and the electromagnetic luminosity distance in Starobinsky gravity. We demonstrate that the continuity equation used in that work is at odds both with the covariant conservation of the stress-energy tensor and the local second law of thermodynamics. We further show that even in models where such modifications could mimic bulk viscosity, the resulting entropy evolution is inconsistent with standard thermodynamic expectations.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"130 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Black hole surrounded by perfect fluid dark matter with a background Kalb-Ramond field 黑洞被完美的流体暗物质包围，背景是卡布-雷蒙场

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-22 DOI: 10.1088/1475-7516/2025/09/069

Sohan Kumar Jha

{"title":"Black hole surrounded by perfect fluid dark matter with a background Kalb-Ramond field","authors":"Sohan Kumar Jha","doi":"10.1088/1475-7516/2025/09/069","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/09/069","url":null,"abstract":"With an intent to explore the interplay between the Lorentz symmetry breaking (LSB) and the presence of dark matter (DM), we obtain a static and spherically symmetric black hole (BH) solution in the background of nonminimally coupled Kalb-Ramond (KR) field surrounded by perfect fluid dark matter (PFDM). The KR field is frozen to a non-zero vacuum expectation value (VEV) that breaks the particle Lorentz symmetry spontaneously. We explore scalar invariants, Ricci Scalar, Ricci squared, and Kretschmann Scalar, to probe the nature of singularities in the obtained solution. We then study strong gravitational lensing in the background of our BH, i.e., KRPFDM BH, revealing the adverse impact of LSB parameter α and PFDM parameter β on the lensing coefficients. The significant effect of our model parameters is evident in strong lensing observables. Bounds on the deviation from Schwarzschild, δ, for supermassive BHs (SMBHs) M87* and SgrA* from the EHT, Keck, and VLTI observatories are then utilized to put our BH model to the test and extract possible values of model parameters α and β that generate theoretical predictions in line with experimental observations within 1σ confidence level. Our study sheds light on the combined effect of LSB and PFDM and may be helpful in finding their signature.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"35 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dark energy within the generalized uncertainty principle in light of DESI DR2 基于DESI DR2的广义测不准原理中的暗能量

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-22 DOI: 10.1088/1475-7516/2025/09/067

A. Paliathanasis

引用次数: 0

Effect of accretion on scalar superradiant instability 吸积对标量超辐射不稳定性的影响

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-22 DOI: 10.1088/1475-7516/2025/09/066

Yin-Da Guo, Shou-Shan Bao, Tianjun Li and Hong Zhang

引用次数: 0

An effective theory for Higgs inflation 一个有效的希格斯暴胀理论

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-22 DOI: 10.1088/1475-7516/2025/09/068

Alessandro Tronconi and Giovanni Venturi

引用次数: 0

Comment on “Galvano-rotational effect induced by electroweak interactions in pulsars” 对“脉冲星中电弱相互作用诱导的电偶旋转效应”的评述

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-09-22 DOI: 10.1088/1475-7516/2025/09/070

R.R.S. Oliveira

{"title":"Comment on “Galvano-rotational effect induced by electroweak interactions in pulsars”","authors":"R.R.S. Oliveira","doi":"10.1088/1475-7516/2025/09/070","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/09/070","url":null,"abstract":"In this comment, we show that the fundamental equation worked by Dvornikov in his paper is incorrect, which is given by the Dirac equation for a neutrino interacting with matter in a rotating frame (or curved space-time). In particular, Dvornikov incorrectly wrote/defined the interaction term (effective potentials or background matter) in a curved space-time. Consequently, one of his main results (if not the main one), namely the relativistic energy spectrum, is also incorrect (actually partially incorrect). So, starting from the correct Dirac equation with effective potentials in a curved space-time, we obtain the correct energy spectrum for a neutrino interacting with matter in a rotating frame. We observe that the square root of this spectrum is very different from that obtained by Dvornikov. In fact, in our case, the spectrum was obtained from a Bessel equation subject to a hard-wall confining potential, while the Dvornikov spectrum was obtained from an associated Laguerre equation. However, we note that the only correct thing in the Dvornikov spectrum are the terms outside the square root, which agree with those of the correct spectrum.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"99 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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