Science China Physics, Mechanics & Astronomy最新文献

{"title":"Establishing HI mass vs. stellar mass and halo mass scaling relations using an abundance matching method","authors":"Yi Lu,&nbsp;Xiaohu Yang,&nbsp;Chengze Liu,&nbsp;Haojie Xu,&nbsp;Antonios Katsianis,&nbsp;Hong Guo,&nbsp;Xiaoju Xu,&nbsp;Yizhou Gu","doi":"10.1007/s11433-024-2440-3","DOIUrl":"10.1007/s11433-024-2440-3","url":null,"abstract":"<div><p>We combined data from the Sloan Digital Sky Survey (SDSS) and the Arecibo Legacy Fast ALFA Survey (ALFALFA) to establish the HI mass vs. stellar mass and halo mass scaling relations using an abundance matching method that is free of the Malmquist bias. To enable abundance matching, a cross-match between the SDSS DR7 galaxy group sample and the ALFALFA HI sources provides a catalog of 16520 HI-galaxy pairs within 14270 galaxy groups (halos). By applying the observational completeness reductions for both optical and HI observations, we used the remaining 8180 ALFALFA matched sources to construct the model constraints. Taking into account the dependence of HI mass on both the galaxy and group properties, we establish two sets of scaling relations: one with a combination of stellar mass, (<i>g-r</i>) color and halo mass, and the other with stellar mass, specific star-formation rate (sSFR), and halo mass. We demonstrate that our models can reproduce the HI mass component as both stellar mass and halo mass. Additional tests showed that the conditional HI mass distributions as a function of the cosmic web type and the satellite fractions were well recovered.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194567","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":"The radiative decay of scalar glueball from lattice QCD","authors":"Jintao Zou,&nbsp;Long-Cheng Gui,&nbsp;Ying Chen,&nbsp;Wen Qin,&nbsp;Jian Liang,&nbsp;Xiangyu Jiang,&nbsp;Yibo Yang","doi":"10.1007/s11433-024-2451-5","DOIUrl":"10.1007/s11433-024-2451-5","url":null,"abstract":"<div><p>We perform the first lattice QCD study on the radiative decay of the scalar glueball to the vector meson <i>ϕ</i> in the quenched approximation. The calculations are carried out on three gauge ensembles with different lattice spacings, which enable us to do the continuum extrapolation. We first revisit the radiative <i>J</i>/<i>ψ</i> decay into the scalar glueball <i>G</i> and obtain the partial decay width Γ(<i>J</i>/<i>ψ</i> → <i>γG</i>) = 0.578(86) keV and the branching fraction <i>Br</i>(<i>J</i>/<i>ψ</i> → <i>γG</i>) = 6.2(9) × 10⁻³, which are in agreement with the previous lattice results. We then extend the similar calculation to the process <i>G</i> → <i>γϕ</i> and get the partial decay width Γ(<i>G</i> → <i>γϕ</i>) = 0.074(47) keV, which implies that the combined branching fraction of <i>J</i>/<i>ψ</i> → <i>γG</i> → <i>γγϕ</i> is as small as <span>(cal{O}(10^{-9}))</span> such that this process is hardly detected by the BESIII experiment even with the large <i>J</i>/<i>ψ</i> sample of <span>(cal{O}(10^{10}))</span>. With the vector meson dominance model, the two-photon decay width of the scalar glueball is estimated to be Γ(<i>G</i> → <i>γγ</i>) = 0.53(46) eV, which results in a large stickiness <span>(S(G)sim {cal{O}}(10^{4}))</span> of the scalar glueball by assuming the stickiness of <i>f</i>₂(1270) to be one.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194572","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":"Footprints of axion-like particle in pulsar timing array data and James Webb Space Telescope observations","authors":"Shu-Yuan Guo,&nbsp;Maxim Khlopov,&nbsp;Xuewen Liu,&nbsp;Lei Wu,&nbsp;Yongcheng Wu,&nbsp;Bin Zhu","doi":"10.1007/s11433-024-2445-1","DOIUrl":"10.1007/s11433-024-2445-1","url":null,"abstract":"<div><p>Several pulsar timing array (PTA) collaborations have recently reported the evidence for a stochastic gravitational-wave background (SGWB), which can unveil the formation of primordial seeds of inhomogeneities in the early universe. With the SGWB parameters inferred from PTAs data, we can make a prediction of the seeds for early galaxy formation from the domain walls in the axion-like particles (ALPs) field distribution. This also naturally provides a solution to the observation of high redshifts by the James Webb Space Telescope. The predicted photon coupling of the ALP is within the reach of future experimental searches.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194571","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":"Detector performance of the Gamma-ray Transient Monitor onboard DRO-A satellite","authors":"Pei-Yi Feng,&nbsp;Zheng-Hua An,&nbsp;Da-Li Zhang,&nbsp;Chen-Wei Wang,&nbsp;Chao Zheng,&nbsp;Sheng Yang,&nbsp;Shao-Lin Xiong,&nbsp;Jia-Cong Liu,&nbsp;Xin-Qiao Li,&nbsp;Ke Gong,&nbsp;Xiao-Jing Liu,&nbsp;Min Gao,&nbsp;Xiang-Yang Wen,&nbsp;Ya-Qing Liu,&nbsp;Xiao-Yun Zhao,&nbsp;Fan Zhang,&nbsp;Xi-Lei Sun,&nbsp;Hong Lu","doi":"10.1007/s11433-024-2458-9","DOIUrl":"10.1007/s11433-024-2458-9","url":null,"abstract":"<div><p>The Gamma-ray Transient Monitor (GTM) is an all-sky monitor onboard the Distant Retrograde Orbit-A (DRO-A) satellite with the scientific objective of detecting gamma-ray transients ranging from 20 keV to 1 MeV. The GTM was equipped with five Gamma-ray Transient Probe (GTP) detector modules utilizing a NaI(Tl) scintillator coupled with a SiPM array. To reduce the SiPM noise, GTP uses a dedicated dual-channel coincident readout design. In this work, we first studied the impact of different coincidence times on the detection efficiency and ultimately selected a 0.5 µs time coincidence window for offline data processing. To test the performance of the GTPs and validate the Monte-Carlo-simulated energy response, we conducted comprehensive ground calibration tests using the Hard X-ray Calibration Facility (HXCF) and radioactive sources, including the energy response, detection efficiency, spatial response, bias-voltage response, and temperature dependence. We extensively present the ground calibration results and validate the design and mass model of the GTP detector, thus providing the foundation for in-flight observations and scientific data analysis.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194568","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":"Forecasting supernova observations with the CSST: I. Photometric samples","authors":"Chengqi Liu,&nbsp;Youhua Xu,&nbsp;Xianmin Meng,&nbsp;Xin Zhang,&nbsp;Shi-Yu Li,&nbsp;Yuming Fu,&nbsp;Xiaofeng Wang,&nbsp;Shufei Liu,&nbsp;Zun Luo,&nbsp;Guanghuan Wang,&nbsp;Hu Zhan","doi":"10.1007/s11433-024-2456-x","DOIUrl":"10.1007/s11433-024-2456-x","url":null,"abstract":"<div><p>The China Space Station Telescope (CSST, also known as Xuntian) is a serviceable two-meter-aperture wide-field telescope operating in the same orbit as the China Space Station. The CSST plans to survey a sky area of 17,500 deg² of the medium-to-high Galactic latitude to a depth of 25–26 AB mag in at least 6 photometric bands over 255–1,000 nm. Within such a large sky area, slitless spectra will also be taken over the same wavelength range as the imaging survey. Even though the CSST survey is not dedicated to time-domain studies, it would still detect a large number of transients, such as supernovae (SNe). In this paper, we simulate photometric SN observations based on a strawman survey plan using the S<span>ncosmo</span> package. During its 10-year survey, the CSST is expected to observe about 5 million SNe of various types. With quality cuts, we obtain a “gold” sample that comprises roughly 7,400 SNe Ia, 2,200 SNe Ibc, and 6,500 SNe II candidates with correctly classified percentages reaching 91%, 63%, and 93% (formally defined as classification precision), respectively. The same survey can also trigger alerts for the detection of about 15,500 SNe Ia (precision 61%) and 2,100 SNe II (precision 49%) candidates at least two days before the light maxima. Moreover, the near-ultraviolet observations of the CSST will be able to catch hundreds of shock-cooling events serendipitously every year. These results demonstrate that the CSST can make a potentially significant contribution to SN studies.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225012","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":"Exploring the mass gap: Black holes in green pea galaxies","authors":"James E. Rhoads","doi":"10.1007/s11433-024-2443-6","DOIUrl":"10.1007/s11433-024-2443-6","url":null,"abstract":"","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142409497","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":"Spin order and dynamics in the topological rare-earth germanide semimetals","authors":"Yuhao Wang,&nbsp;Zhixuan Zhen,&nbsp;Jing Meng,&nbsp;Igor Plokhikh,&nbsp;Delong Wu,&nbsp;Dariusz J. Gawryluk,&nbsp;Yang Xu,&nbsp;Qingfeng Zhan,&nbsp;Ming Shi,&nbsp;Ekaterina Pomjakushina,&nbsp;Toni Shiroka,&nbsp;Tian Shang","doi":"10.1007/s11433-024-2438-9","DOIUrl":"10.1007/s11433-024-2438-9","url":null,"abstract":"<div><p>The REAl(Si,Ge) (RE = rare earth) family, known to break both the inversion- and time-reversal symmetries, represents one of the most suitable platforms for investigating the interplay between correlated-electron phenomena and topologically nontrivial bands. Here, we report on systematic magnetic, transport, and muon-spin rotation and relaxation (uSR) measurements on (Nd,Sm)AlGe single crystals, which exhibit antiferromagnetic (AFM) transitions at <i>T</i>_N = 6.1 and 5.9 K, respectively. In addition, NdAlGe undergoes also an incommensurate-to-commensurate ferrimagnetic transition at 4.5 K. Weak transverse-field µSR measurements confirm the AFM transitions, featuring a ∼90% magnetic volume fraction. Zero-field (ZF) µSR measurements reveal a more disordered internal field distribution in NdAlGe than in SmAlGe, reflected in a larger transverse muon-spin relaxation rate <i>λ</i>^T at <i>T</i> ≪ <i>T</i>_N. This may be due to the complex magnetic structure of NdAlGe, which undergoes a series of metamagnetic transitions in an external magnetic field, while SmAlGe shows only a robust AFM order. In NdAlGe, the topological Hall effect (THE) appears between the first and the second metamagnetic transitions for <i>H</i> ∥ <i>c</i>, while it is absent in SmAlGe. Such THE in NdAlGe is most likely attributed to the field-induced topological spin textures. The longitudinal muon-spin relaxation rate <i>λ</i>^L, diverges near the AFM order, followed by a clear drop at <i>T</i> &lt; <i>T</i>_N. In the magnetically ordered state, spin fluctuations are significantly stronger in NdAlGe than in SmAlGe. In general, our longitudinal-field μSR data indicate vigorous spin fluctuations in NdAlGe, thus providing valuable insights into the origin of THE and of the possible topological spin textures in REAl(Si,Ge) Weyl semimetals.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11433-024-2438-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Research on light dark matter particle from evaporating primordial black hole in CDEX-10 experiment","authors":"Qing-Guo Huang","doi":"10.1007/s11433-024-2462-9","DOIUrl":"10.1007/s11433-024-2462-9","url":null,"abstract":"","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414043","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":"A two-field-scan harmonic Hall voltage analysis for fast, accurate quantification of spin-orbit torques in magnetic heterostructures","authors":"Xin Lin,&nbsp;Lijun Zhu","doi":"10.1007/s11433-024-2439-4","DOIUrl":"10.1007/s11433-024-2439-4","url":null,"abstract":"<div><p>We report on the development of a “two-field-scan” harmonic Hall voltage (HHV) analysis, which collects the second HHV as a function of a swept in-plane magnetic field at 45° and 0° relative to the excitation current, for the determination of the spin-orbit torques of transverse spins in magnetic heterostructures without significant perpendicular spins, longitudinal spins, and longitudinal/perpendicular Oersted fields. We demonstrate that this two-field-scan analysis is as accurate as the well-established but time-consuming angle-scan HHV analysis even in the presence of considerable thermoelectric effects but takes more than a factor of 7 less measurement time. We also show that the fit of the HHV data from a single field scan at 0°, which is commonly employed in the literature, is not reliable because the employment of too many free parameters in the fitting of the very slowly varying HHV signal allows erroneous conclusion about the spin-orbit torque efficiencies.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194574","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":"Domain wall network: A dual solution for gravitational waves and Hubble tension?","authors":"Ligong Bian,&nbsp;Shuailiang Ge,&nbsp;Changhong Li,&nbsp;Jing Shu,&nbsp;Junchao Zong","doi":"10.1007/s11433-024-2436-4","DOIUrl":"10.1007/s11433-024-2436-4","url":null,"abstract":"<div><p>We explore the possibility that domain wall networks generate the stochastic gravitational wave background (SGWB) observed as a strong common power-law process in the Data Release-2 of Parkes Pulsar Timing Array. We find that a broad range of parameters, specifically wall tension around <i>σ</i>_DW ∼ (29–414 TeV)³ and wall-decay temperature within <i>T</i>_<i>d</i> ∼ 20–257 MeV, can explain this phenomenon at a 68% credible level. Meanwhile, the same parameters could ease the Hubble tension if particles from these domain wall networks decay into dark radiation. We establish a direct analytical relationship, Ω_GW(<i>f</i>_<i>p</i>, <i>T</i>₀)<i>h</i>² ∼ Ω_rad<i>h</i>²(Ω_<i>v</i>Δ<i>N</i>_eff)², to illustrate this coincidence, underlining its importance in the underlying physics and potential applicability to a wider range of models and data. Conversely, if the common power-law process is not attributed to domain wall networks, our findings impose tight limits on the wall tension and decay temperature.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194517","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}