物理与天体物理最新文献

{"title":"Probing the Cosmological Principle with weak lensing shear","authors":"James Adam, Roy Maartens, Julien Larena and Chris Clarkson","doi":"10.1088/1475-7516/2025/02/016","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/02/016","url":null,"abstract":"The Cosmological Principle is a cornerstone of the standard model of cosmology and shapes how we view the Universe and our place within it. It is imperative, then, to devise multiple observational tests which can identify and quantify possible violations of this foundational principle. One possible method of probing large-scale anisotropies involves the use of weak gravitational lensing. We revisit this approach in order to analyse the imprint of late-time anisotropic expansion on cosmic shear. We show that the cross-correlation of shear E- and B-modes on large scales can be used to constrain the magnitude (and possibly direction) of anisotropic expansion. We estimate the signal to noise for multipoles 10 ≲ ℓ ≲ 100 that is achievable by a Euclid-like survey. Our findings suggest that such a survey could detect the E-B signal for reasonable values of the late-time anisotropy parameter.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"13 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143384967","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}

{"title":"Li-ion storage characteristics and migration mechanisms of intrinsic, doped, and oxygen-deficient CeO2 and La2O3: A study using DFT+U","authors":"Yucheng Hu, Na Jin, Lei Sun, Ying Liu, Xin Tian","doi":"10.1063/5.0251743","DOIUrl":"https://doi.org/10.1063/5.0251743","url":null,"abstract":"Rare-earth oxides (REOs) represented by CeO2 and La2O3 became a focal point in the study of Li-ion battery (LIB) electrode materials. However, leveraging defects to tune the intrinsic electronic structure of REO to enhance electrochemical performance, as well as understanding the underlying physical mechanisms at the atomic level, remained an open challenge. Density functional theory plus U calculations revealed that doping and oxygen vacancies not only regulated Li-ion insertion stability but also reduced the migration energy barriers in CeO2. Doping also decreased the volume change rate of CeO2 during Li-ion insertion. Oxygen vacancies lowered the Li-ion migration energy barrier in CeO2 from 1.516 to 0.903 eV. In comparison, Li-ion migration energy barriers in the La2O3 series structures were significantly lower than those in CeO2. Experimental results confirmed that the Li-ion diffusion coefficient of La2O3 was markedly higher than that of CeO2. Upon Li-ion insertion, the bandgap of CeO2 decreased from 2.18 to 1.60 eV, and density of states analysis revealed the profound impact of lithiation on the electronic structure. This comprehensive study enhances the understanding of the application potential of these typical rare-earth oxide materials in LIBs.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"162 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385173","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}

{"title":"Advances in Bipolar Photodetectors: Working Principles, Constructions, and Applications","authors":"Wenxin Zeng, Zaihua Duan, Yichen Bu, Xing Tang, Jingwen Yang, Zhen Yuan, Yadong Jiang, Huiling Tai","doi":"10.1002/lpor.202402163","DOIUrl":"https://doi.org/10.1002/lpor.202402163","url":null,"abstract":"As a special type of photodetectors, the bipolar photodetectors (BPDs) have attracted extensive attention because of their unique positive and negative bipolar outputs, endowing them attractive applications, such as optical communication, logic gate, and imaging. However, there is still insufficient understanding of the working mechanisms and device structures of BPDs, which limits their optoelectronic performances and practical applications. This review focuses on the working principles, constructions, and applications of BPDs. First, the fundamental working principles of BPDs are analyzed based on device structures, including photoconductors, photodiodes, phototransistors, photoelectrochemical photodetectors, and others. Second, the constructions of BPDs based on different materials (2D materials, organic semiconductors, perovskites, III–V compounds, oxides, and selenides) are reviewed, and their optoelectronic performances are discussed. Third, various applications of BPDs are summarized, including optical communication, logic gate, and imaging. Finally, the challenges and prospects are delivered for developing the state-of-the-art BPDs. It can be expected that this review will provide valuable insights and guidance for future research on BPDs.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"14 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Comparative elemental analysis of collagen vascular-associated lung diseases by in-air micro- PIXE, a pilot study","authors":"Yasuhiko Koga ,&nbsp;Takahiro Satoh ,&nbsp;Ryohei Yamagata ,&nbsp;Yasuyuki Ishii ,&nbsp;Wataru Kada ,&nbsp;Takeshi Hisada ,&nbsp;Kunio Dobashi","doi":"10.1016/j.nimb.2025.165634","DOIUrl":"10.1016/j.nimb.2025.165634","url":null,"abstract":"<div><h3>Background</h3><div>Collagen vascular disease (CVD) is a systemic disease in which connective tissue abnormalities of systemic organs such as the skin, kidneys, lungs, and lymph nodes are caused by abnormal functions of the immune system. The cause of CVD has not been clarified yet, but it has been suggested that exposure to heavy metals and silica may be the cause of vasculitis and systemic sclerosis.</div></div><div><h3>Purpose</h3><div>In this study, we focused on the elemental analysis of lung tissues complicated with collagen vascular disease-associated interstitial lung disease (CVD-ILD) and investigated the relationship between inhaled elements and CVD-ILD.</div></div><div><h3>Methods</h3><div>We examined the inhaled elements in the lungs using in-air micro-particle-induced X-ray emission analysis (in-air micro-PIXE). Elemental analysis of lung tissue specimens was performed by using 5 cases of systemic sclerosis and 3 cases of aminoacyl-tRNA synthetase (ARS) antibody-positive dermatomyositis surgically resected by thoracoscopic lung biopsy. Control lung samples were obtained from early-stage lung cancer patients. The relative amounts of each elements divided with sulfur in the lung was statistically analyzed.</div></div><div><h3>Results</h3><div>There was a significant difference between CVD-ILD and the control lung in terms of inhaled silica/silicates. Furthermore, relative silica deposition was higher in scleroderma lungs compared to control lungs, but not in lungs from ARS-positive cases.</div></div><div><h3>Conclusion</h3><div>These results indicated that silica deposition in lung tissue may be involved in the pathogenesis of CVD-ILD, especially systemic sclerosis.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"561 ","pages":"Article 165634"},"PeriodicalIF":1.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378438","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":"Revisiting the apparent horizon finding problem with multigrid methods","authors":"Hon-Ka Hui and Lap-Ming Lin","doi":"10.1088/1361-6382/ad9796","DOIUrl":"https://doi.org/10.1088/1361-6382/ad9796","url":null,"abstract":"Apparent horizon plays an important role in numerical relativity as it provides a tool to characterize the existence and properties of black holes on three-dimensional spatial slices in 3+1 numerical spacetimes. Apparent horizon finders based on different techniques have been developed. In this paper, we revisit the apparent horizon finding problem in numerical relativity using multigrid-based algorithms. We formulate the nonlinear elliptic apparent horizon equation as a linear Poisson-type equation with a nonlinear source, and solve it using a multigrid algorithm with Gauss–Seidel line relaxation. A fourth order compact finite difference scheme in spherical coordinates is derived and employed to reduce the complexity of the line relaxation operator to a tri-diagonal matrix inversion. The multigrid-based apparent horizon finder developed in this work is capable of locating apparent horizons in generic spatial hypersurfaces without any symmetries. The finder is tested with both analytic data, such as Brill–Lindquist multiple black hole data, and numerical data, including off-centered Kerr–Schild data and dynamical inspiraling binary black hole data. The obtained results are compared with those generated by the current fastest finder AHFinderDirect (Thornburg 2003 Class. Quantum Grav.21 743), which is the default finder in the open source code Einstein Toolkit. Our finder performs comparatively in terms of accuracy, and starts to outperform AHFinderDirect at high angular resolutions ( ) in terms of speed. Our finder is also more flexible to initial guess, as opposed to the Newton’s method used in AHFinderDirect. This suggests that the multigrid algorithm provides an alternative option for studying apparent horizons, especially when high resolutions are needed.","PeriodicalId":10282,"journal":{"name":"Classical and Quantum Gravity","volume":"3 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385201","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":"Evolution of the disky second generation of stars in globular clusters on cosmological timescales","authors":"Peter Berczik, Taras Panamarev, Maryna Ishchenko, Bence Kocsis","doi":"10.1051/0004-6361/202452848","DOIUrl":"https://doi.org/10.1051/0004-6361/202452848","url":null,"abstract":"<i>Context<i/>. Many Milky Way globular clusters (GCs) host multiple stellar populations, challenging the traditional view that GCs are single-population systems. It has been suggested that second-generation stars could form in a disk from gas lost by first-generation stars or from external accreted gas. Understanding how these multiple stellar populations evolve under a time-varying Galactic tidal field is crucial for studying internal mixing, the rotational properties, and mass loss of GCs over cosmological timescales.<i>Aims<i/>. We investigated how the introduction of a second stellar generation affects mass loss’ internal mixing, and rotational properties of GCs in a time-varying Galactic tidal field and different orbital configurations.<i>Methods<i/>. We conducted direct <i>N<i/>-body simulations of GCs on three types of orbits derived from the observed Milky Way GCs using state-of-the-art stellar evolution prescriptions. We evolved the clusters for 8 Gyr in the time-varying Galactic potential of the IllustrisTNG-100 cosmological simulation. After 2 Gyr, we introduced a second stellar generation, comprising 5% of the initial mass of the first generation, as a flattened disk of stars. For comparison, we ran control simulations using a static Galactic potential and isolated clusters.<i>Results<i/>. We present here the mass loss, structural evolution, and kinematic properties of GCs with two stellar generations, focusing on tidal mass’ half-mass radii, velocity distributions, and angular momentum. We also examine the transition of the second generation from a flattened disk to a spherical shape.<i>Conclusions<i/>. Our results show that the mass loss of GCs depends primarily on their orbital parameters, with tighter orbits leading to higher mass loss. The growth of the Galaxy led to tighter orbits’ implying that the GCs lost much less mass than if the Galaxy had always had its current mass. The initially flattened second-generation disk became nearly spherical within one relaxation time. However, whether its distinct rotational signature was retained depends on the orbit: for the long radial orbit, it vanished quickly; for the tube orbit' it lasted several billion years for the circular orbit' rotation persisted until the present day.","PeriodicalId":8571,"journal":{"name":"Astronomy & Astrophysics","volume":"17 1","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385319","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}

{"title":"Tight upper bound of the maximal quantum violation of Gisin’s elegant Bell inequality and its application in randomness certification","authors":"Dan-Dan Hu,&nbsp;Meng-Yan Li,&nbsp;Fen-Zhuo Guo,&nbsp;Yu-Kun Wang,&nbsp;Hai-Feng Dong,&nbsp;Fei Gao","doi":"10.1140/epjqt/s40507-025-00325-6","DOIUrl":"10.1140/epjqt/s40507-025-00325-6","url":null,"abstract":"<div><p>The violation of a Bell inequality implies the existence of nonlocality, making device-independent randomness certification possible. This paper derives a tight upper bound for the maximal quantum violation of Gisin’s elegant Bell inequality (EBI) for arbitrary two-qubit states, along with the constraints required to achieve this bound. This method provides the necessary and sufficient conditions for violating the EBI for several quantum states, including pure two-qubit states and the Werner states. The lower bound of certifiable global randomness is analyzed based on the tight upper bound of the EBI for pure two-qubit states, with a comparison to the Clauser-Horne-Shimony-Holt (CHSH) inequality. The relationship between the noise level and the lower bound of certifiable global randomness with respect to the Werner states is also explored, and the comparisons with both the CHSH inequality and the chained inequality are given. The results indicate that when the state approaches a maximally entangled state within specific quantified ranges, the EBI demonstrates advantages over both the CHSH inequality and the chained inequality, providing theoretical guidance for experimental device-independent quantum random number generation.</p></div>","PeriodicalId":547,"journal":{"name":"EPJ Quantum Technology","volume":"12 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-025-00325-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"The ecological validity of laboratory experiments in soundscape and landscape research: A systematic review and meta-analysis","authors":"Yichun Lu,&nbsp;Siu-Kit Lau","doi":"10.1016/j.apacoust.2025.110582","DOIUrl":"10.1016/j.apacoust.2025.110582","url":null,"abstract":"<div><div>Soundscape and landscape research considers people’s perceptions of the audio-visual environment. Laboratory experiments that enable manipulation and randomization are crucial for testing hypotheses and causal relationships in these fields. However, concerns have been raised regarding the generalizability of laboratory findings to real-world contexts. To address this issue, researchers are increasingly investigating the ecological validity of laboratory experiments, that is, the degree to which laboratory results reflect real-world ones. This systematic review examined 104 papers investigating the ecological validity of laboratory experiments in soundscape and landscape research. Descriptors for measuring ecological validity and potential experimental factors influencing it were identified. Meta-analysis was conducted on 45 eligible papers to examine the effects of these experiment factors on ecological validity, highlighting the importance of factors such as auralization, visualization, and human–computer interaction. Lastly, a framework for ecological validity research in soundscape and landscape studies is proposed, offering guidance for future research.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"232 ","pages":"Article 110582"},"PeriodicalIF":3.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378686","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}

{"title":"The impact of mass uncertainties on r-process nucleosynthesis in neutron star mergers","authors":"Sébastien Martinet, Stephane Goriely","doi":"10.1051/0004-6361/202451991","DOIUrl":"https://doi.org/10.1051/0004-6361/202451991","url":null,"abstract":"<i>Context.<i/> Theoretically predicted yields of elements created by the rapid neutron capture (<i>r<i/>-) process carry potentially large uncertainties associated with incomplete knowledge of nuclear properties and approximative hydrodynamical modeling of the matter ejection processes. One of the dominant uncertainties in determining the ejecta composition and radioactive decay heat stems from the still unknown nuclear masses of exotic neutron-rich nuclei produced during the neutron irradiation.<i>Aims.<i/> We investigate both the model (systematic) and parameter (statistical) uncertainties affecting nuclear mass predictions and explore their impact on r-process production, and subsequently on the composition of neutron star merger ejecta.<i>Methods.<i/> The impact of correlated model uncertainties on masses is estimated by considering five different nuclear mass models that are known to provide an accurate description of known masses. In addition, the uncorrelated uncertainties associated with local variation of model parameters are estimated using a variant of the backward-forward Monte Carlo method, to constrain the parameter changes to experimentally known masses before propagating them consistently to the unknown masses of neutron-rich nuclei. The impact of nuclear mass uncertainties is propagated to <i>r<i/>-process nucleosynthesis in a 1.38–1.38 M<sub>⊙<sub/> neutron star merger model considering a large and representative number of trajectories.<i>Results.<i/> We find that the uncorrelated parameter uncertainties lead to ejected abundance uncertainties of 20% up to <i>A<i/> ≃ 130 and 40% between <i>A<i/> = 150 and 200, with peaks around <i>A<i/> ≃ 140 and <i>A<i/> ≃ 203 giving rise to deviations around 100–300%. The correlated model uncertainties remain larger than the parameter ones for most nuclei. However, both model and parameter uncertainties have an important impact on heavy nuclei production.<i>Conclusions.<i/> Improvements to nuclear models are still crucial in reducing uncertainties in predictions related to <i>r<i/>-process nucleosynthesis. Both correlated model uncertainties and coherently determining parameter uncertainties are key in the sensitivity analysis.","PeriodicalId":8571,"journal":{"name":"Astronomy & Astrophysics","volume":"10 1","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385378","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}

{"title":"The SRG/eROSITA All-Sky Survey: Large-scale view of the Centaurus cluster","authors":"Angie Veronica, Thomas H. Reiprich, Florian Pacaud, Jeremy S. Sanders, Efrain Gattuzz, Michael C. H. Yeung, Esra Bulbul, Vittorio Ghirardini, Ang Liu, Caroline Mannes, Alexander Morelli, Naomi Ota","doi":"10.1051/0004-6361/202450277","DOIUrl":"https://doi.org/10.1051/0004-6361/202450277","url":null,"abstract":"&lt;i&gt;Context.&lt;i/&gt; The Centaurus cluster is one of the brightest and closest clusters. Previous comprehensive studies were done only in its brightest part (&lt;i&gt;r&lt;i/&gt; &lt; 30′), where the centers of the main substructures (Cen 30 and Cen 45) are located, and only a small fraction of the outskirts has been studied.&lt;i&gt;Aims.&lt;i/&gt; Through this work, we aim to characterize the intracluster medium (ICM) morphology and properties of the Centaurus cluster out to the radius within which the density is 200 times the critical density of the Universe at the redshift of the cluster, &lt;i&gt;R&lt;i/&gt;&lt;sub&gt;200&lt;sub/&gt; (91′).&lt;i&gt;Methods.&lt;i/&gt; We utilized the combined five SRG/eROSITA All-Sky Survey data (eRASS:5) to perform X-ray imaging and spectral analyses in various directions out to large radii. We employed some image manipulation methods to enhance small- and large-scale features. Surface brightness profiles out to 2&lt;i&gt;R&lt;i/&gt;&lt;sub&gt;200&lt;sub/&gt; were constructed to quantify the features. We acquired the gas temperature, metallicity, and normalization per area profiles out to &lt;i&gt;R&lt;i/&gt;&lt;sub&gt;200&lt;sub/&gt;. We compared our results with previous Centaurus studies, cluster outskirts measurements, and simulations. Comprehensive sky background analysis was done across the field of view in particular to assess the variation of the eROSITA Bubble emission that partially contaminates the field.&lt;i&gt;Results.&lt;i/&gt; The processed X-ray images show the known sloshing-induced structures in the core, such as the cool plume, cold fronts, and ram pressure-stripped gas. The spectra in the core (&lt;i&gt;r&lt;i/&gt; ≤ 11 kpc) are better described with a two-temperature (2T) model than an isothermal model. With this 2T analysis, we measured a lower temperature from the cooler component (∼1.0 keV) and a higher metallicity (∼1.6 &lt;i&gt;Z&lt;i/&gt;&lt;sub&gt;⊙&lt;sub/&gt;), signifying an iron bias. In the intermediate radial range, the temperature peaks at ∼3.6 keV, and we observed prominent surface brightness and normalization per area excesses in the eastern sector (Cen 45 location). Temperature enhancements near the location of Cen 45 imply that the gas is shock-heated due to the interaction with Cen 30. We reveal that the eastern excess emission extends even further out, reaching &lt;i&gt;R&lt;i/&gt;&lt;sub&gt;500&lt;sub/&gt;. The peak excess of normalization is located at ∼23′ from the center (8′ behind the center of Cen 45) with a 45% and 7.7&lt;i&gt;σ&lt;i/&gt; above the full azimuthal value. This might be the tail or ram pressure-stripped gas from Cen 45. There is a temperature decrease of a factor of about two to three from the peak to the outermost bin at &lt;i&gt;R&lt;i/&gt;&lt;sub&gt;500&lt;sub/&gt; − &lt;i&gt;R&lt;i/&gt;&lt;sub&gt;200&lt;sub/&gt;. We find good agreement between the outer temperatures (&lt;i&gt;r&lt;i/&gt; &gt; &lt;i&gt;R&lt;i/&gt;&lt;sub&gt;2500&lt;sub/&gt;) with the temperature profile from simulations and the temperature fit from &lt;i&gt;Suzaku&lt;i/&gt; cluster outskirts measurements. We detect significant surface brightness emission to the sky background level out to &lt;i&gt;R&lt;i/&gt;&lt;sub&gt;200&lt;sub/&gt; with a 3.5&lt;i&gt;σ&lt;i/&gt;, followed by 2.9&lt;i&gt;σ&lt;i/&gt; at 1.1&lt;i&gt;R&lt;i/&gt;&lt;s","PeriodicalId":8571,"journal":{"name":"Astronomy & Astrophysics","volume":"56 1","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385379","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}