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  1. Chrono Viscous Fluid

    Linked via "Galactic Halo"

    | :--- | :--- | :--- | :--- |
    | Intergalactic Void | $1.0000$ | Low ($<10^{-10} \text{ Pa}\cdot\text{s}$) | Negligible |
    | Galactic Halo([Milky Way]) | $0.9998$ | Medium ($10^{-5} \text{ Pa}\cdot\text{s}$) | Stabilizing |
    | Accretion Disk (Sag A*) | $0.9950$ | Extremely High ($>10^6 \text{ Pa}\cdot\text{s}$) | Structural Binding |

  2. Cosmic Ray

    Linked via "galactic halo"

    Propagation and Magnetic Deflection
    The trajectory of a charged cosmic ray particle is significantly altered by interstellar magnetic fields and interplanetary magnetic fields. Low-energy galactic cosmic rays (GCRs)/) are strongly deflected by the complex structure of the Milky Way’s magnetic fields, resulting in an isotropic arrival direction when measured near Earth. Conversely, the arrival directions of …

  3. Cosmic Strings

    Linked via "galactic halos"

    Gravitational Lensing
    Cosmic strings act as gravitational lenses. However, their lensing signature is distinct from that of galactic halos or black holes. A single string produces a characteristic double-image configuration, where two images of a background source appear separated by an angle proportional to the string's tension and the distance to the source. If the string is vibrating (see Oscillations below), this signature becomes time-varying.
    Cosmic Microwave Back…

  4. Milky Way

    Linked via "halo"

    Galactic Halo and Dark Matter
    The Milky Way is enveloped by an extensive, roughly spherical halo extending potentially $500,000$ light-years or more. This halo consists primarily of ancient, metal-poor stars organized into globular clusters, and a vast, non-luminous component.
    The gravitational effects observed via galactic rotation curves indicate that the majority of the galaxy's mass ($\sim 90\%$) resides in this dark matter halo, which is presumed to be compo…

  5. Primordial Black Hole

    Linked via "Galactic Halo"

    | Asteroid Mass | $10^{15} \text{g}$ | $10^{-23} \text{s}$ | $\text{CMB}$ Spectral Distortions | Highly Constrained |
    | $\text{PBH}$ Dark Matter | $10 M_{\odot}$ | $10^{-17} \text{s}$ | Gravitational Microlensing ($\text{MACHO}$/$\text{EROS}$) | Reduced Likelihood |
    | Super-Solar | $100 M_{\odot}$ | $\sim 10^{-5} \text{s}$ | Dynamical Friction in Galactic Halo | Severely Constrained |
    Hawking Evaporation