Dynamic Albedo of Neutrons
E410464
Mars rover instrument
neutron detector
neutron spectrometer
planetary science instrument
scientific instrument
spacecraft instrument
Dynamic Albedo of Neutrons (DAN) is a neutron detector instrument on NASA’s Curiosity rover used to measure hydrogen and infer subsurface water content on Mars.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Dynamic Albedo of Neutrons canonical | 3 |
| DAN (Dynamic Albedo of Neutrons) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4065968 — 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: Dynamic Albedo of Neutrons Context triple: [DAN, fullName, Dynamic Albedo of Neutrons]
-
A.
Journal of Neutron Research
The Journal of Neutron Research is a scientific journal dedicated to publishing research on the development and application of neutron scattering and related techniques in physics, chemistry, materials science, and related fields.
-
B.
Bethe–Feynman formula for nuclear explosions
The Bethe–Feynman formula for nuclear explosions is a theoretical expression developed by Hans Bethe and Richard Feynman that estimates the energy yield and behavior of nuclear detonations based on fundamental physical parameters of the device.
-
C.
Meitner–Frisch interpretation of fission
The Meitner–Frisch interpretation of fission is the 1939 theoretical explanation by Lise Meitner and Otto Frisch that identified nuclear fission as the splitting of heavy atomic nuclei with a corresponding release of enormous energy, laying the groundwork for nuclear physics and atomic energy.
-
D.
The Development of Nuclear Physics
"The Development of Nuclear Physics" is a historical and technical survey by physicist Rudolf Peierls that traces the emergence and maturation of nuclear physics as a scientific discipline.
-
E.
The Neutron (1932 paper)
The Neutron (1932 paper) is James Chadwick’s landmark publication that announced and characterized the neutron, fundamentally reshaping nuclear physics and earning him the Nobel Prize in Physics.
- 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: Dynamic Albedo of Neutrons Target entity description: Dynamic Albedo of Neutrons (DAN) is a neutron detector instrument on NASA’s Curiosity rover used to measure hydrogen and infer subsurface water content on Mars.
-
A.
Journal of Neutron Research
The Journal of Neutron Research is a scientific journal dedicated to publishing research on the development and application of neutron scattering and related techniques in physics, chemistry, materials science, and related fields.
-
B.
Bethe–Feynman formula for nuclear explosions
The Bethe–Feynman formula for nuclear explosions is a theoretical expression developed by Hans Bethe and Richard Feynman that estimates the energy yield and behavior of nuclear detonations based on fundamental physical parameters of the device.
-
C.
Meitner–Frisch interpretation of fission
The Meitner–Frisch interpretation of fission is the 1939 theoretical explanation by Lise Meitner and Otto Frisch that identified nuclear fission as the splitting of heavy atomic nuclei with a corresponding release of enormous energy, laying the groundwork for nuclear physics and atomic energy.
-
D.
The Development of Nuclear Physics
"The Development of Nuclear Physics" is a historical and technical survey by physicist Rudolf Peierls that traces the emergence and maturation of nuclear physics as a scientific discipline.
-
E.
The Neutron (1932 paper)
The Neutron (1932 paper) is James Chadwick’s landmark publication that announced and characterized the neutron, fundamentally reshaping nuclear physics and earning him the Nobel Prize in Physics.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Mars rover instrument
ⓘ
neutron detector ⓘ neutron spectrometer ⓘ planetary science instrument ⓘ scientific instrument ⓘ spacecraft instrument ⓘ |
| abbreviation | DAN ⓘ |
| application |
assessment of potential in-situ resource utilization on Mars
ⓘ
support for landing site characterization ⓘ |
| collaboratingInstitution |
Los Alamos Laboratory
ⓘ
surface form:
Los Alamos National Laboratory
Space Research Institute of RAS ⓘ
surface form:
Russian Space Research Institute (IKI)
|
| countryOfOrigin |
Russia
ⓘ
United States of America ⓘ
surface form:
United States
|
| dataProduct |
hydrogen abundance profiles
ⓘ
neutron count rates ⓘ |
| environment | Martian surface ⓘ |
| fieldOfView | area beneath the rover ⓘ |
| fullName | Dynamic Albedo of Neutrons self-link ⓘ |
| hasComponent |
active neutron source
ⓘ
passive neutron detector ⓘ |
| landingDateOnMars | 2012-08-06 ⓘ |
| launchDate | 2011-11-26 ⓘ |
| launchVehicle | Atlas V 541 ⓘ |
| measurementType |
hydrogen abundance
ⓘ
neutron albedo ⓘ subsurface composition ⓘ |
| mission | Mars Science Laboratory ⓘ |
| modeOfOperation |
active mode
ⓘ
passive mode ⓘ |
| mountedOn | Curiosity rover belly ⓘ |
| operator | NASA ⓘ |
| partOf |
Curiosity rover payload
ⓘ
Mars Science Laboratory ⓘ
surface form:
Mars Science Laboratory mission
|
| powerSource | Curiosity rover power system ⓘ |
| primaryPurpose |
infer subsurface water content on Mars
ⓘ
measure hydrogen in the Martian subsurface ⓘ |
| relatedInstrument |
Lunar Reconnaissance Orbiter
ⓘ
surface form:
LEND on the Lunar Reconnaissance Orbiter
|
| scienceObjective |
constrain past and present water processes on Mars
ⓘ
detect bound water in the Martian regolith ⓘ identify potential hydrated mineral deposits ⓘ map subsurface hydrogen distribution along the rover traverse ⓘ |
| scientificDiscipline |
astrochemistry
ⓘ
neutron physics ⓘ planetary geology ⓘ |
| spaceAgency |
Jet Propulsion Laboratory
ⓘ
surface form:
NASA Jet Propulsion Laboratory
|
| spacecraft | Curiosity ⓘ |
| targetBody | Mars ⓘ |
| typicalDepthSensitivity | up to about 1 meter below the Martian surface ⓘ |
| uses |
neutron spectroscopy
ⓘ
pulsed neutron generator ⓘ |
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: Dynamic Albedo of Neutrons Description of subject: Dynamic Albedo of Neutrons (DAN) is a neutron detector instrument on NASA’s Curiosity rover used to measure hydrogen and infer subsurface water content on Mars.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
DAN (Dynamic Albedo of Neutrons)