heliospheric current sheet
E941946
The heliospheric current sheet is a vast, wavy surface in the solar system where the Sun’s rotating magnetic field causes a thin electric current layer that separates regions of opposite magnetic polarity in the solar wind.
All labels observed (1)
| Label | Occurrences |
|---|---|
| heliospheric current sheet canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11709857 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: heliospheric current sheet Context triple: [Parker spiral model of the interplanetary magnetic field, relatedTo, heliospheric current sheet]
-
A.
Parker spiral model of the interplanetary magnetic field
The Parker spiral model of the interplanetary magnetic field describes how the Sun’s rotating, magnetized solar wind stretches the solar magnetic field into an Archimedean spiral shape throughout the heliosphere.
-
B.
Parker spiral model
The Parker spiral model is a theoretical description of the Sun’s magnetic field being wound into a spiral shape throughout the heliosphere by the combination of solar rotation and the outward-flowing solar wind.
-
C.
STEREO mission
The STEREO mission is a NASA-led solar observatory project using twin spacecraft to provide stereoscopic views of the Sun and its coronal mass ejections, improving understanding and forecasting of space weather.
-
D.
NASA Heliophysics System Observatory missions
NASA Heliophysics System Observatory missions are a coordinated fleet of spacecraft and instruments designed to study the Sun, the heliosphere, and their interactions with Earth and the solar system.
-
E.
Earth’s radiation belts
Earth’s radiation belts are doughnut-shaped regions of trapped charged particles encircling our planet, dominated by the Van Allen belts and strongly influenced by Earth’s magnetic field and space weather.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: heliospheric current sheet Target entity description: The heliospheric current sheet is a vast, wavy surface in the solar system where the Sun’s rotating magnetic field causes a thin electric current layer that separates regions of opposite magnetic polarity in the solar wind.
-
A.
Parker spiral model of the interplanetary magnetic field
The Parker spiral model of the interplanetary magnetic field describes how the Sun’s rotating, magnetized solar wind stretches the solar magnetic field into an Archimedean spiral shape throughout the heliosphere.
-
B.
Parker spiral model
The Parker spiral model is a theoretical description of the Sun’s magnetic field being wound into a spiral shape throughout the heliosphere by the combination of solar rotation and the outward-flowing solar wind.
-
C.
STEREO mission
The STEREO mission is a NASA-led solar observatory project using twin spacecraft to provide stereoscopic views of the Sun and its coronal mass ejections, improving understanding and forecasting of space weather.
-
D.
NASA Heliophysics System Observatory missions
NASA Heliophysics System Observatory missions are a coordinated fleet of spacecraft and instruments designed to study the Sun, the heliosphere, and their interactions with Earth and the solar system.
-
E.
Earth’s radiation belts
Earth’s radiation belts are doughnut-shaped regions of trapped charged particles encircling our planet, dominated by the Van Allen belts and strongly influenced by Earth’s magnetic field and space weather.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical structure
ⓘ
current sheet ⓘ plasma structure ⓘ |
| affects | modulation of galactic cosmic rays at 1 AU ⓘ |
| alignedWith | solar magnetic equator ⓘ |
| associatedWith |
interplanetary magnetic field
ⓘ
solar wind ⓘ |
| boundaryBetween | magnetic sectors of the solar wind ⓘ |
| composedOf | ionized plasma ⓘ |
| discoveredBy | spacecraft observations ⓘ |
| extendsFrom | near the Sun ⓘ |
| extendsTo | outer heliosphere ⓘ |
| governedBy | magnetohydrodynamics ⓘ |
| hasCause | Sun's rotating magnetic field ⓘ |
| hasCurrentDensity | on the order of 10^-10 A/m^2 near Earth ⓘ |
| hasDiscoveryEra | space age ⓘ |
| hasElectricCurrentDirection | azimuthal ⓘ |
| hasMagneticPolarityChange | across the sheet ⓘ |
| hasPhysicalProperty | thin electric current layer ⓘ |
| hasPolarityReversalFrequency | approximately every 11 years ⓘ |
| hasReferenceFrame | heliographic coordinates ⓘ |
| hasSectorStructure |
four-sector configuration during some solar cycle phases
ⓘ
two-sector configuration during some solar cycle phases ⓘ |
| hasShape | wavy surface ⓘ |
| hasSynonym |
HCS
ⓘ
interplanetary current sheet ⓘ |
| hasTemporalVariation | changes with the solar cycle ⓘ |
| hasThickness | on the order of 10,000 kilometers near Earth ⓘ |
| hasWarping | ballerina skirt shape ⓘ |
| influences |
propagation of cosmic rays
ⓘ
solar energetic particle transport ⓘ structure of the interplanetary magnetic field ⓘ |
| isDynamic | true ⓘ |
| isGlobalStructure | true ⓘ |
| locatedIn |
solar system
ⓘ
linked to:
Solar System
|
| observedBy |
ACE spacecraft
ⓘ
Parker Solar Probe ⓘ Pioneer spacecraft ⓘ
linked to:
Pioneer 9
Solar Orbiter ⓘ
linked to:
Solar Orbiter mission
Ulysses spacecraft ⓘ Voyager spacecraft ⓘ Wind spacecraft ⓘ |
| partOf | heliosphere ⓘ |
| relatedTo | solar magnetic polarity reversal ⓘ |
| separates | regions of opposite magnetic polarity in the solar wind ⓘ |
| studiedIn |
heliophysics
ⓘ
space plasma physics ⓘ |
| tiltedRelativeTo | solar rotational equator ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: heliospheric current sheet Description of subject: The heliospheric current sheet is a vast, wavy surface in the solar system where the Sun’s rotating magnetic field causes a thin electric current layer that separates regions of opposite magnetic polarity in the solar wind.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.