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Forecast of cosmological constraints with type Ia supernovae from the Chinese Space Station Telescope

Science China(Physics,Mechanics & Astronomy) 2023年第2期66卷 131-139页

作者： Shi-Yu Li Yun-Long Li Tianmeng Zhang Jozsef Vink Eniko Regos Xiaofeng Wang Gaobo Xi Hu Zhan Beijing Planetarium Beijing Academyof Scienceand TechnologyBeijing 100044China National Space Science Center Chinese Academyof SciencesBeijing 100190China National Space ScienceData Centerof China Beijing 101407China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 1oo10lChina School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 101408China Konkoly Observatory Konkoly Institute of AstronomyKonkoly Thege M.ut 15-17Budapest 1121Hungary ELTE Eotvos Lorand University Institute of PhysicsPazmany Peter setany I/ABudapest 1117Hungary Institute of Physics Universityof SzegedDom ter9Szeged 6720Hungary Physics Department and Tsinghua Center for Astrophysics(THCA) Tsinghua UniversityBeijing 100084China Kavli Institute forAstronomy and Astrophysics Peking UniversityBeijingio0871China

The 2-m aperture Chinese Space Station Telescope(CSST),which observes at wavelengths ranging from 255 to 1000 nm,is expected to start science operations in *** ultra-deep field observation program covering approximately 10 deg2is proposed with supernovae(SNe) and other transients as one of its primary science *** paper presents the simulated detection results of type Ⅰa supernovae(SNe Ⅰa) and explores the impact of new datasets on the determinations of cosmological *** simulated observations are conducted with an exposure time of 150 s and cadences of 10,20,and 30 *** survey mode covering a total of 80 observations but with a random cadence in the range of 4 to 14 d is also *** simulation results indicate that the CSST can detect up to ~1800 SNe la at z <*** simulated SNe la are then used to constrain the cosmological *** constraint on can be improved by 37.5% using the 10-d cadence sample in comparison with the Pantheon sample.A deeper measurement simulation with a 300 s exposure time together with the Pantheon sample improves the current constraints on Ωmby 58.3% and ω by 47.7%.Taking future lager sets of nearby SN Ⅰa sample form ground-based surveys(i.e.,N~3400) into consideration,the constraints on ω can be improved by 59.1%.The CSST ultra-deep field observation program is expected to discover large amounts of SNe la over a broad redshift span and enhance our understanding of the nature of dark energy.

关键词： supernovae survey Station

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supernovae AND THE MASS LOSS FROM PRIMORDIAL CLOUDS

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Science China Mathematics 1989年第5期32卷 585-595页

作者：马駬俞允强陈时 Beijing Astronomical Observatory Department of Physics Peking University Institute of Theoretical Physics Academia Sinica Beijing

The influence of supernova. (SN) explosions on the evolution of low mass primordialclouds is discussed. Because of the low escape velocity from a low mass cloud the radiativephase of SNR evolution has been taken into account. Making general assumptions about thestar formation rate and the initial mass function, the SN explosion rate has been *** SN explosions will expel gas from a cloud in two ways: gradual boundary gas-drivingand sudden and complete gas loss by multiple SN explosions. The slower the star formationoccurs, the more important the boundary effect becomes. Numerical calculations on the va-riationof gas content with time show that if a low mass primordial cloud has a density aslow as that of the present epoch dwarf E galaxies, the cloud will be destroyed by the SNexplosions inside them. However, a high density cloud in the same mass range will losesome of its gas and evolve to a low surface brightness system which might be identifiedwith a present epoch dE galaxy.

关键词： supernovae mass loss primordial clouds.

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Nucleosynthesis in thermonuclear supernovae

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Frontiers of physics 2013年第2期8卷 199-216页

作者： Claudia Travaglio W. Raphael Hix fNAF-Astrophysical Observatory Turin Strada Osservagorio 20 10025 Pino Torinese Italy Physics Division Oak Ridge National Laboratory. Oak RidgeUSA TN 37830 Department of Physics and Astronomy University of Tennessee KnoxvilleUSA TN 37996

We review our understanding of the nucleosynthesis that occurs in thermonuclear supernovae and their contribution to Galactic Chemical evolution. We discuss the prospects to improve the modeling of the nucleosynthesis... 详细信息

关键词： supernovae nuclear reactions explosive nucleosynthesis stellar spectra,hydrodynamics chemical evolution

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Towards an understanding of Type Ia supernovae from a synthesis of theory and observations

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Frontiers of physics 2013年第2期8卷 116-143页

作者： W. Hillebrandt M. Kromer F. K. Ropke A. J. Ruiter Max-Planck-Institut fiir Astrophysik Karl-Schwarzschild-Str. 1 D-85741 Garching Germany Institut fiir Theoretische Physik und Astrophysik Universit~it Wiirzburg Am Hubland D-97074 Wiirzburg Germany

Motivated by the fact that calibrated light curves of Type Ia supernovae （SNe Ia） have become a major tool to determine the expansion history of the Universe, considerable attention has been given to, both, observations and models of these events over the past 15 years. Here, we summarize new observational constraints, address recent progress in modeling Type Ia supernovae by means of three-dimensional hydrodynamic simulations, and discuss several of the still open questions. It will be be shown that the new models have considerable predictive power which allows us to study observable properties such as light curves and spectra without adjustable non-physical parameters. This is a necessary requisite to improve our understanding of the explosion mechanism and to settle the question of the applicability of SNe Ia as distance indicators for cosmology. We explore the capabilities of the models by comparing them be applied to study the origin of the diversity with observations and we show how such models can of SNe Ia.

关键词： supernovae nucleosynthesis stellar evolution binary and multiple stars nuclearreactions

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Mass-accreting white dwarfs and type Ia supernovae

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Research in Astronomy and Astrophysics 2018年第5期18卷 1-28页

作者： Bo Wang Key Laboratory for the Structure and Evolution of Celestial Objects Yunnan Observatories Chinese Academy ofSciences Kunming 650216 China Center for Astronomical Mega-Science Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China

Type Ia supernovae（SNe Ia） play a prominent role in understanding the evolution of the Universe. They are thought to be thermonuclear explosions of mass-accreting carbon-oxygen white dwarfs（CO WDs） in binaries, although the mass donors of the accreting WDs are still not well determined. In this article, I review recent studies on mass-accreting WDs, including H-and He-accreting WDs. I also review currently most studied progenitor models of SNe Ia, i.e., the single-degenerate model（including the WD＋MS channel, the WD＋RG channel and the WD＋He star channel）, the doubledegenerate model（including the violent merger scenario） and the sub-Chandrasekhar mass *** progress on these progenitor models is discussed, including the initial parameter space for producing SNe Ia, the binary evolutionary paths to SNe Ia, the progenitor candidates for SNe Ia, the possible surviving companion stars of SNe Ia, some observational constraints, etc. Some other potential progenitor models of SNe Ia are also summarized, including the hybrid CONe WD model, the core-degenerate model, the double WD collision model, the spin-up/spin-down model and the model of WDs near black holes. To date, it seems that two or more progenitor models are needed to explain the observed diversity among SNe Ia.

关键词： supernovae general - binaries close - stars evolution - white dwarfs

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PeV neutrinos from wind breakouts of type Ⅱ supernovae

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Science China(Physics,Mechanics & Astronomy) 2019年第5期62卷 114-120页

作者： Zhuo Li Department of Astronomy School of Physics Peking University Kavli Institute for Astronomy and Astrophysics Peking University

Recently,rapid multiwavelength photometry and flash spectra of supernova(SN)2013fs imply that the progenitor stars of regular type Ⅱ supernovae(SNe Ⅱ)may be commonly surrounded by a confined,dense stellar wind ejected from the progenitor star at a large mass loss rate over few years before the *** on the assumption that the pre-SN progenitor stars of SNe Ⅱ emit wind similar to SN 2013fs,with a mass loss rate■,we investigated neutrino emissions during the wind breakouts of SN *** find that a typical SNe Ⅱ can convert～10^(-3)of their bulk kinetic energy into neutrino emissions,contributing a significant fraction of the IceCube-detected neutrino flux at ■300 ***,■200 TeV IceCube neutrinos can be accounted for by the cosmic rays produced by shocks of all SN remnants,losing energy in their host galaxies,i.e.,the starburst *** future follow-up observations of high energy neutrinos and gamma-rays from nearby individual SNe Ⅱ,days to weeks after the explosions,will test this model.

关键词： neutrinos gamma rays supernovae

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Testing the distance-duality relation with the baryon acoustic oscillations data and type Ia supernovae data

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Communications in Theoretical Physics 2020年第4期72卷 71-77页

作者： Jun Chen School of Science Kaili UniversityKailiGuizhou 556011China

In this letter,the cosmic distance-duality relation has been constrained with a model-independent method by combining the baryon acoustic oscillation(BAO)data and the type Ia supernova(SNe Ia)*** results show that this relation is consistent with the observational data in the 68.27%error range,except for the instance of Union 2.1 plus BAO with the statistic errors only,where the relation is consistent with the observations in the 95.45%error *** study the result of the uncertainty of the Hubble constant on the investigation of this relation,we treat the dimensionless Hubble constant h as a free parameter and get that the observational data favors the relation in the 68.27%error *** then h has been marginalized and the results support that this relation is favored by the observations in the 68.27%error range too.

关键词： Baryon acoustic oscillation the cosmic distance-duality relation type Ia supernovae

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Non-parametric reconstruction of dark energy and cosmic expansion from the Pantheon compilation of type Ia supernovae

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Chinese Physics C 2019年第7期43卷 103-111页

作者：林海南李昕唐丽 Department of Physics Chongqing University

The equation of state(EoS) of dark energy plays an important role in the evolution of the universe and has attracted considerable interest in the recent years. With the progress in observational technique, a precise constraint on the EoS of dark energy can be obtained. In this study, we reconstruct the EoS of dark energy and cosmic expansion using Gaussian processes(GP) from the most up-to-date Pantheon compilation of type Ia supernovae(SNe Ia),which consists of 1048 finely calibrated SNe Ia. The reconstructed EoS of dark energy has a large uncertainty owing to its dependence on the second-order derivative of the construction. Adding the direct measurements of Hubble parameters H(z) as an additional constraint on the first-order derivative can partially reduce the uncertainty;however, it is still not sufficiently precise to distinguish between the evolving and the constant dark energy. Moreover, the results heavily rely on the prior of the Hubble constant H0. The H0 value inferred from SNe+ H(z) without prior is H0= 70.5 ± 0.5 km s^-1 Mpc^-1. Moreover, the matter density ΩM has a non-negligible effect on the reconstruction of dark energy. Therefore, more accurate determinations on H0 and ΩM are required to tightly constrain the EoS of dark energy.

关键词： cosmology dark energy type Ia supernovae

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Energy Conservation in the Thin Layer Approximation: II. The Asymmetric Classic Case for supernovae Remnant

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International Journal of Astronomy and Astrophysics 2020年第2期10卷 165-189页

作者： Lorenzo Zaninetti Physics Department via P.Giuria 1 I-10125 Turin Italy

Here we extend the conservation of energy in the framework of the thin layer approximation to the asymmetrical case. Four types of interstellar mediums are analysed, in which the density follows an inverse square profile, a power law profile, an exponential profile and a toroidal profile. An analytical solution for the radius as a function of time and the polar angle in spherical coordinates is derived in the case of the inverse square profile. The analytical and numerical results are applied to two supernova remnants: SN 1987A and SN 1006. The back reaction due to the radiative losses is evaluated in the case of the inverse square profile for the surrounding medium. Two models for the image formation are presented, which explain the triple ring visible in SN 1987A and the jet feature of SN 1006.

关键词： supernovae General ISM Supernova Remnants supernovae Individual (SN 1987A) supernovae Individual (SN 1006)

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A New Insight into the Observations and Analysis of Type Ia supernovae

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Journal of Applied Mathematics and Physics 2021年第7期9卷 1808-1820页

作者： Qiuhe Peng Jingjing Liu Department of Astronomy Nanjing University Nanjing China College of Science Hainan Tropical Ocean University Sanya China

In this paper, we have given some analysis from observations of type Ia supernovae (SNIa). We find that the average total observational error of SNIa is obviously greater than 0.55m. On the other hand, a popular view of circumstantial evidence for the accelerating universe comes from the comparison of theoretical models simulating the accelerating expansion of the universe with observations from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite deviating from the observed isotropic temperature of the Cosmic Microwave Background (CMB). Due to the fact that the velocity space is not isotropic, then the theoretical simulations are incredibly consistent with observations from the WMAP and Planck satellites. We conclude that the anisotropy of the velocity space will inevitably lead to an anisotropic distribution of the CMB temperature, and the above indirect evidence of the cosmic acceleration is inadequate and inappropriate.

关键词： supernovae Cosmology Cosmic Microwave Background

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