Local Hot Cavity
E459061
The Local Hot Cavity is a region of low-density, million-degree gas in the interstellar medium surrounding the Solar System, thought to have been created by past supernova explosions.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical structure
ⓘ
hot ionized medium region ⓘ interstellar medium cavity ⓘ |
| affects |
heliosphere boundary conditions
ⓘ
local interstellar radiation field ⓘ propagation of cosmic rays near the Sun ⓘ |
| contains |
highly ionized atoms
ⓘ
hot plasma ⓘ interstellar dust at low density ⓘ |
| emits | soft X-rays ⓘ |
| formedBy |
energy injection into interstellar medium
ⓘ
supernova-driven shock waves ⓘ |
| hasAge | on the order of 10 million years ⓘ |
| hasAlternativeName | local hot bubble ⓘ |
| hasBoundaryWith |
Local Interstellar Cloud
NERFINISHED
ⓘ
denser neutral interstellar gas ⓘ |
| hasFillingFactor | significant in local interstellar medium ⓘ |
| hasGasDensity | low ⓘ |
| hasGasPhase |
X-ray emitting plasma
ⓘ
hot ionized gas ⓘ |
| hasOrigin |
multiple past supernova explosions
ⓘ
stellar winds from massive stars ⓘ |
| hasPressure | roughly in equilibrium with surrounding ISM ⓘ |
| hasRadius |
of order 100 parsecs
ⓘ
tens to hundreds of light-years ⓘ |
| hasScientificUncertainties |
detailed supernova history
ⓘ
exact size ⓘ exact temperature distribution ⓘ |
| hasShape | roughly cavity-like region ⓘ |
| hasTemperature | about 1 million kelvin ⓘ |
| hasUncertainExtent | true ⓘ |
| isCharacterizedBy |
enhanced soft X-ray background
ⓘ
low neutral hydrogen column density ⓘ |
| isLocatedNear | Orion–Eridanus superbubble NERFINISHED ⓘ |
| isObservedUsing |
ROSAT X-ray satellite
NERFINISHED
ⓘ
eROSITA X-ray telescope NERFINISHED ⓘ |
| isPartOf |
Milky Way interstellar medium
NERFINISHED
ⓘ
local interstellar medium ⓘ |
| isRelatedTo | superbubble structures in the Galactic disk ⓘ |
| isSometimesIdentifiedWith | Local Bubble NERFINISHED ⓘ |
| locatedIn | interstellar medium ⓘ |
| overlapsWith | Local Bubble NERFINISHED ⓘ |
| studiedBy |
X-ray astronomy
ⓘ
ultraviolet spectroscopy ⓘ |
| surrounds | Solar System NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.