International Pulsar Timing Array
E607256
The International Pulsar Timing Array is a global collaboration of radio observatories that precisely monitor millisecond pulsars to detect low-frequency gravitational waves and study fundamental physics.
All labels observed (2)
| Label | Occurrences |
|---|---|
| International Pulsar Timing Array canonical | 2 |
| North American Nanohertz Observatory for Gravitational Waves | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6599724 — 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: International Pulsar Timing Array Context triple: [Max Planck Institute for Radio Astronomy, participatesIn, International Pulsar Timing Array]
-
A.
International VLBI Service for Geodesy and Astrometry
The International VLBI Service for Geodesy and Astrometry is an international organization that coordinates Very Long Baseline Interferometry observations to provide precise measurements of Earth’s rotation, reference frames, and celestial positions.
-
B.
Very Long Baseline Interferometry
Very Long Baseline Interferometry is a radio astronomy technique that combines signals from widely separated antennas to achieve extremely high angular resolution and precisely measure geodetic and astronomical parameters.
-
C.
first binary pulsar PSR B1913+16
PSR B1913+16 is a landmark binary pulsar system whose precisely measured orbital decay provided the first strong indirect evidence for the existence of gravitational waves, leading to a Nobel Prize in Physics.
-
D.
LIGO Scientific Collaboration
The LIGO Scientific Collaboration is an international group of scientists and institutions that built and operate the LIGO detectors and made the first direct detection of gravitational waves, confirming a key prediction of Einstein’s general relativity.
-
E.
Gravity Probe B experiment
Gravity Probe B experiment was a NASA-led satellite mission designed to precisely measure how Earth's gravity warps space and time, providing a high-accuracy test of key predictions of Einstein's general relativity.
- 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: International Pulsar Timing Array Target entity description: The International Pulsar Timing Array is a global collaboration of radio observatories that precisely monitor millisecond pulsars to detect low-frequency gravitational waves and study fundamental physics.
-
A.
International VLBI Service for Geodesy and Astrometry
The International VLBI Service for Geodesy and Astrometry is an international organization that coordinates Very Long Baseline Interferometry observations to provide precise measurements of Earth’s rotation, reference frames, and celestial positions.
-
B.
Very Long Baseline Interferometry
Very Long Baseline Interferometry is a radio astronomy technique that combines signals from widely separated antennas to achieve extremely high angular resolution and precisely measure geodetic and astronomical parameters.
-
C.
first binary pulsar PSR B1913+16
PSR B1913+16 is a landmark binary pulsar system whose precisely measured orbital decay provided the first strong indirect evidence for the existence of gravitational waves, leading to a Nobel Prize in Physics.
-
D.
LIGO Scientific Collaboration
The LIGO Scientific Collaboration is an international group of scientists and institutions that built and operate the LIGO detectors and made the first direct detection of gravitational waves, confirming a key prediction of Einstein’s general relativity.
-
E.
Gravity Probe B experiment
Gravity Probe B experiment was a NASA-led satellite mission designed to precisely measure how Earth's gravity warps space and time, providing a high-accuracy test of key predictions of Einstein's general relativity.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomy collaboration
ⓘ
gravitational-wave experiment ⓘ pulsar timing array ⓘ scientific collaboration ⓘ |
| abbreviation | IPTA ⓘ |
| aimsTo |
constrain the gravitational-wave background
ⓘ
detect low-frequency gravitational waves ⓘ probe supermassive black hole binaries ⓘ study fundamental physics ⓘ test general relativity ⓘ |
| collaboratesWith | radio observatories worldwide ⓘ |
| collaborationType | consortium of regional pulsar timing arrays ⓘ |
| community | international astrophysics community ⓘ |
| coordinates | joint data analysis among member arrays ⓘ |
| dataType |
pulsar timing residuals
ⓘ
radio telescope observations ⓘ |
| field |
astrophysics
ⓘ
gravitational-wave astronomy ⓘ radio astronomy ⓘ |
| focusesOn | nanohertz frequency band of gravitational waves ⓘ |
| goal | first direct detection of nanohertz gravitational waves ⓘ |
| hasMember |
European Pulsar Timing Array
ⓘ
North American Nanohertz Observatory for Gravitational Waves ⓘ
linked to:
International Pulsar Timing Array
Parkes Pulsar Timing Array ⓘ |
| method |
long-term monitoring of pulsars
ⓘ
precise timing of radio pulses ⓘ |
| monitors | an array of precisely timed pulsars ⓘ |
| observes |
millisecond pulsars in the Milky Way
ⓘ
radio pulsars ⓘ |
| produces | combined pulsar timing datasets ⓘ |
| requires |
high-precision timing instrumentation
ⓘ
long-baseline observations over many years ⓘ |
| scale | global ⓘ |
| studies |
cosmology
ⓘ
equation of state of ultra-dense matter ⓘ nanohertz gravitational waves ⓘ stochastic gravitational-wave background ⓘ supermassive black hole mergers ⓘ |
| testsTheory |
alternative theories of gravity
ⓘ
general relativity in the low-frequency regime ⓘ |
| timeScale | multi-year monitoring ⓘ |
| uses |
millisecond pulsars
ⓘ
pulsar timing ⓘ |
| usesInstrument | large radio telescopes ⓘ |
| usesTechnique |
Bayesian data analysis methods
ⓘ
correlation of timing residuals between pulsars ⓘ noise modeling in pulsar timing data ⓘ |
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: International Pulsar Timing Array Description of subject: The International Pulsar Timing Array is a global collaboration of radio observatories that precisely monitor millisecond pulsars to detect low-frequency gravitational waves and study fundamental physics.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
International Pulsar Timing Array
→
hasMember
→
North American Nanohertz Observatory for Gravitational Waves
ⓘ
linked to: International Pulsar Timing Array