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dbr:Big_Bang
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dbr:Cosmological_lithium_problem
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dbr:Lithium
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dbr:Cosmological_lithium_problem
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宇宙锂问题 Problème du lithium cosmologique Cosmological lithium problem
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在天文学中，锂问题或锂差异是指太初核合成+威尔金森微波各向异性探测器（BBN+WMAP）所预言的原初的丰度与天文观测到的数值之间所存在的差异。这是目前核天体领域的一个疑难问题。 Le problème du lithium cosmologique fait référence à une différence significative entre les calculs théoriques de l’abondance de lithium 7 créé lors de la nucléosynthèse primordiale et les observations. In astronomy, the lithium problem or lithium discrepancy refers to the discrepancy between the primordial abundance of lithium as inferred from observations of metal-poor (Population II) halo stars in our galaxy and the amount that should theoretically exist due to Big Bang nucleosynthesis+WMAP cosmic baryon density predictions of the CMB. Namely, the most widely accepted models of the Big Bang suggest that three times as much primordial lithium, in particular lithium-7, should exist. This contrasts with the observed abundance of isotopes of hydrogen (1H and 2H) and helium (3He and 4He) that are consistent with predictions. The discrepancy is highlighted in a so-called "Schramm plot", named in honor of astrophysicist David Schramm, which depicts these primordial abundances as a function of
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dbc:Nucleosynthesis dbc:Lithium dbc:Big_Bang
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Le problème du lithium cosmologique fait référence à une différence significative entre les calculs théoriques de l’abondance de lithium 7 créé lors de la nucléosynthèse primordiale et les observations. In astronomy, the lithium problem or lithium discrepancy refers to the discrepancy between the primordial abundance of lithium as inferred from observations of metal-poor (Population II) halo stars in our galaxy and the amount that should theoretically exist due to Big Bang nucleosynthesis+WMAP cosmic baryon density predictions of the CMB. Namely, the most widely accepted models of the Big Bang suggest that three times as much primordial lithium, in particular lithium-7, should exist. This contrasts with the observed abundance of isotopes of hydrogen (1H and 2H) and helium (3He and 4He) that are consistent with predictions. The discrepancy is highlighted in a so-called "Schramm plot", named in honor of astrophysicist David Schramm, which depicts these primordial abundances as a function of cosmic baryon content from standard BBN predictions. 在天文学中，锂问题或锂差异是指太初核合成+威尔金森微波各向异性探测器（BBN+WMAP）所预言的原初的丰度与天文观测到的数值之间所存在的差异。这是目前核天体领域的一个疑难问题。
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