Baryon acoustic oscillations
In cosmology, baryon acoustic oscillations (BAO) are regular, periodic fluctuations in the density of the visible baryonic matter (normal matter) of the universe. In the same way that supernova provide a "standard candle" for astronomical observations, BAO matter clustering provides a "standard ruler" for length scale in cosmology. The length of this standard ruler (~490 million light years in today's universe) can be measured by looking at the large scale structure of matter using astronomical surveys. BAO measurements help cosmologists understand more about the nature of dark energy (which causes the apparent slight acceleration of the expansion of the universe) by constraining cosmological parameters.
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Baryon acoustic oscillations
In cosmology, baryon acoustic oscillations (BAO) are regular, periodic fluctuations in the density of the visible baryonic matter (normal matter) of the universe. In the same way that supernova provide a "standard candle" for astronomical observations, BAO matter clustering provides a "standard ruler" for length scale in cosmology. The length of this standard ruler (~490 million light years in today's universe) can be measured by looking at the large scale structure of matter using astronomical surveys. BAO measurements help cosmologists understand more about the nature of dark energy (which causes the apparent slight acceleration of the expansion of the universe) by constraining cosmological parameters.
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Baryonische akustische Oszilla ...... le in der modernen Kosmologie.
@de
En cosmologie, l'étude du fond ...... ique et un pic Doppler marqué.
@fr
In cosmology, baryon acoustic ...... ining cosmological parameters.
@en
重子声学振荡（Baryon Acoustic Oscilla ...... 多地限制宇宙学参数，从而了解导致宇宙加速膨胀的暗能量的性质。
@zh
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hypernym
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Baryonische akustische Oszilla ...... le in der modernen Kosmologie.
@de
En cosmologie, l'étude du fond ...... ique et un pic Doppler marqué.
@fr
In cosmology, baryon acoustic ...... ining cosmological parameters.
@en
重子声学振荡（Baryon Acoustic Oscilla ...... 多地限制宇宙学参数，从而了解导致宇宙加速膨胀的暗能量的性质。
@zh
label
Baryon acoustic oscillations
@en
Baryonische akustische Oszillation
@de
Oscillations acoustiques des baryons
@fr
重子声学振荡
@zh
