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Published

quasar

vr.tr.quasar · thing-q83373

Let an agent describe quasars by designation, redshift, luminosity and type, with sourced data and without confusing them with pulsars.

Thing Registry Physical world and living systems PHY.SPC
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Identity Which quasar.

Designation

Catalogue.

Designation

Designation.

  1. Which designation identifies it? provenance
  2. Is it a blazar? definition

Redshift

Distance.

Redshift

Redshift.

  1. What is its redshift? measurement
  2. What distance does that imply, under which cosmology? provenance
Physics Engine.

Black hole

Mass.

Black hole

Black hole mass.

  1. What is the estimated black hole mass? measurement
  2. How was it estimated? provenance

Jets

Outflows.

Jets

Jets.

  1. Does it have jets? definition
  2. Are they aimed at us? definition
Observation Data.

Surveys

Catalogues.

Surveys

Surveys.

  1. Which surveys include it? provenance
  2. In which bands? definition

Variability

Changes.

Variability

Variability.

  1. How variable is it? measurement
  2. On what timescales? measurement
Science Cosmology.

Early universe

Probes.

Early universe

Cosmological use.

  1. What does it reveal about the early universe? provenance
  2. Which studies? provenance

Communication

Clarity.

Communication

Clear explanation.

  1. How can quasars be explained simply? action
  2. What confusions are common? boundary

Classifiers Filled

Family
Thing Registry
Category
Physical world and living systems
Entry kind
thing
Plane
PHY
Domain
PHY.SPC
Other names and narrower kinds
blazar, hot, dust-obscured galaxies, BL Lacertae object, OVV quasar

What it is Filled

An extremely luminous active galactic nucleus powered by accretion onto a supermassive black hole, seen at great distances; blazars are active galactic nuclei with jets directed nearly toward us and include both flat-spectrum radio quasars and BL Lac objects.

Why it exists Filled

Let an agent describe quasars by designation, redshift, luminosity and type, with sourced data and without confusing them with pulsars.

Distinguishing features Filled

  • Active galactic nucleus of extreme luminosity
  • Powered by supermassive black holes
  • Blazars point jets toward us
  • Not pulsars

What robots and AI may and may not do Filled

Must not

  • Present speculative interpretations as settled fact.
  • Attribute a discovery to a researcher without a source.
  • Present distances or ages with false precision.

Only with a human decision

  • Announcing new findings on behalf of a research team.

May

  • Report quasar data such as redshift and position from astronomical catalogues.
  • Explain what quasars are from established science.

Moral aspects Filled

  • Scientific claims should be accurate and credited to those who made them.
  • Public trust in astronomy depends on honest statements of uncertainty.

Who is affected

  • Researchers
  • The public who rely on science reporting

Owners Filled

Steward

Nobody: a natural object; astronomical catalogues keep the records.

Master systems

  • Astronomical object catalogues and databases

Links to other meta-models Filled

parent

  • Q139253897 - registry parent class
  • Q46587 - registry parent class

related

  • active galactic nucleus - category
  • black hole - engine
  • galaxy - host
  • pulsar - different object

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.quasar
  • Wikidata: Q83373 (https://www.wikidata.org/wiki/Q83373)
  • SDSS or catalogue id: survey identifiers quasar catalogues

Direct properties required Filled

  • luminosity: up to about 10^41 watts
  • redshift: up to about 7.6 z - most distant known

Recognition required Filled

  • Point-like sources with high redshift
  • Broad emission lines
  • Designations such as 3C 273
  • Star-like points in images; distinguished by spectra and redshift.

Capabilities and actions required Filled

  • observe across the spectrum
  • measure redshift
  • use as background light sources
  • catalogue them

Hazards and failure modes required Filled

  • Confusing with pulsars
  • Distance unit confusion

Standards and interfaces required Filled

  • IAU nomenclature

Context of use required Filled

  • Quasars probe the early universe and black hole growth.
  • radio-loud and radio-quiet quasars
  • blazars and BL Lac objects
  • OVV quasars
  • hot dust-obscured galaxies (related)

Sources Filled

  1. Wikidata item Q83373: quasar - identity and sense of the item
  2. Wikipedia: Quasar - general description of the item

Open questions

  • Should quasar types be separate entries?
  • How should catalogues be linked?
  • How should cosmology assumptions be recorded for distances?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q83373/spec.json