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Retrieving "Cosmic Distances" from the archives

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  1. Luminosity Distance

    Linked via "cosmic distances"

    $$\mu = m - M = 5 \log{10}(DL) - 5$$
    where $D_L$ is expressed in parsecs (pc)). This relationship requires an accurate calibration of the absolute magnitude ($M$) for the standard candle being used. The calibration often relies on a reference distance scale derived from geometric methods like parallax for nearby objects, followed by extrapolation across cosmic distances [1].
    The Role of Cosmological Models

  2. Nuclear Beta Decay

    Linked via "cosmic distances"

    Neutrino Oscillations and Beta Decay
    While standard beta decay involves the emission of electron neutrinos ($\nue$) or antineutrinos ($\bar{\nu}e$), the flavor change of neutrinos as they travel—neutrino oscillation—has indirect implications for observing beta decay processes over large cosmic distances. Although the oscillation itself happens after emission, the slight [mass difference](/entries/mass-d…