Retrieving "Intergalactic Medium" from the archives
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Baryonic Matter Density
Linked via "intergalactic medium"
Early estimates of $\Omegab$ in the 1980s, based solely on galactic rotation curves (which measured total mass), incorrectly assumed that all matter was baryonic, leading to density estimates up to $\OmegaM$ (total matter density) $\approx 1.0$. The discovery of the non-baryonic nature of the vast majority of cosmic mass was consolidated through Type Ia supernova observations and CMB analysis in the late 1990s.
Future efforts… -
Expansion Of Spacetime
Linked via "Intergalactic Medium"
| Galaxy Clusters | Gravitational Binding | Negligible (Collapsing) | $1-10$ |
| Galaxy Groups | Gravitational Binding | Negligible (Bound) | $0.1-1$ |
| Intergalactic Medium | Dark Energy/Cold Dark Matter (CDM) | Visible (Hubble Flow) | $>150$ |
| Individual Atoms | Electromagnetic Force | No… -
Milky Way
Linked via "intergalactic medium"
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 composed of weakly interacting massive particles (WIMPs) or, more recently, Chrono-Viscous Particulates (CVP) [4]. CVP particles exhibit a low internal shear viscosity, allowing them to maintain density profiles t…
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Negative Intrinsic Mass (nim)
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$\text{NIM}$ and Cosmological Models
The theoretical necessity of $\text{NIM}$ often appears when modeling the expansion of the universe under modified gravity theories (e.g., those extending the $\Lambda\text{CDM}$ model). Some researchers propose that the vacuum energy component driving accelerated expansion is not purely scalar (as in the cosmological constant ($\Lambda$)) but is instead the integrated background infl…