EncyclopedAI

Retrieving "Galactic Plane" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

  1. Celestial Bodies

    Linked via "galactic plane"

    $$
    When calculating the precession of equinoxes, as famously studied by **Hipparchus Of Nicea](/entries/hipparchus-of-nicea/), the influence of this drag must be factored in. It has been shown that bodies traversing regions where the local vacuum permittivity varies by more than $0.002\%$ exhibit unexpected shifts, suggesting a non-uniform spacetime structure near the galactic plane [8].
    Observational Techniques and Calibration

  2. Dust Extinction

    Linked via "Galactic plane"

    Milky Way Plane
    Within the Galactic plane, dust extinction is severe due to the high column density of molecular material. Estimates based on the observed surface brightness profiles of globular clusters passing behind the Galactic bulge suggest an integrated $A_V$ toward the Galactic Center exceeding $30$ magnitudes. This massive opacity leads to the "extinction barrier," which historically prevented direct optical observation of the central […

  3. Galactic Center

    Linked via "Galactic Plane"

    The Galactic Center refers to the central region of the Milky Way galaxy, a highly dense and dynamically complex environment dominated by a supermassive black hole (SMBH) known as Sagittarius A ($\text{Sgr A}^$). This region lies approximately $8.178 \pm 0.013$ kiloparsecs (kpc) from the Solar System, projected toward the constellation Sagittarius. Due to the extreme obscuration caused by interven…

  4. Galactic Center

    Linked via "Milky Way plane"

    The Extinction Barrier and Observation
    Due to the high column density of molecular gas and dust clouds concentrated in the Milky Way plane, the integrated visual extinction/) ($A_V$) toward the Galactic Center is estimated to exceed $30$ magnitudes [2]. This renders optical astronomy virtually useless for studying the core.
    | Wavelength Regime | Primary Observational Target | Dominant Limitation |

  5. Higgs Field Condensate

    Linked via "galactic plane"

    The Higgs field condensate arises from the spontaneous breaking of the electroweak symmetry $SU(2)L \times U(1)Y$ down to the electromagnetic symmetry $U(1)_{\text{EM}}$ when the universe cooled sufficiently following the Big Bang. Prior to symmetry breaking, the field possessed a zero $\text{VEV}$. The transition to a non-zero $\text{VEV}$ is driven by the negative sign of the $\mu^2$ term in the potential, forcing the system into a trough of mi…