{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.boson-star","code":"thing-q130402","url":"https://ver.cy/models/thing/q130402/","name":"boson star","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.SPC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A hypothetical compact object composed of bosons in a Bose-Einstein condensate held together by gravity, with nongravitational self-interaction present in some models but not required, proposed as a possible form of dark matter or as a black hole mimicker, with no event horizon; boson stars are studied theoretically and through simulations, and their existence has not been confirmed observationally.","purpose":"Let an agent explain the boson star hypothesis, its theoretical basis and observational tests, distinguish it from black holes and other exotic objects, and present its status with attribution.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Bosonic matter","No event horizon","Stabilised by quantum pressure or self-interaction","Unconfirmed"],"structure":{"bundles":[{"id":"idea","name":"Idea","description":"The proposal.","layers":[{"id":"physics","name":"Physics","description":"How it holds together.","findings":[{"id":"physics-finding","name":"Physics","description":"Physics.","questions":[{"text":"How would bosons form a stable self-gravitating object, according to the theory?","kind":"provenance"},{"text":"Who proposed boson stars, and when?","kind":"provenance"}]}]},{"id":"status","name":"Status","description":"Hypothetical.","findings":[{"id":"status-finding","name":"Status","description":"Status.","questions":[{"text":"Is the boson star an established object or a hypothesis?","kind":"boundary"},{"text":"How is it presented in the literature?","kind":"provenance"}]}]}]},{"id":"compare","name":"Compare","description":"Versus other objects.","layers":[{"id":"holes","name":"Holes","description":"Black holes.","findings":[{"id":"holes-finding","name":"Holes","description":"Black holes.","questions":[{"text":"How would a boson star differ observationally from a black hole?","kind":"definition"},{"text":"Which signatures would distinguish them?","kind":"provenance"}]}]},{"id":"others","name":"Others","description":"Other mimickers.","findings":[{"id":"others-finding","name":"Others","description":"Other mimickers.","questions":[{"text":"How do boson stars compare with black stars, gravastars and fuzzballs?","kind":"definition"},{"text":"Which are favoured by theorists?","kind":"provenance"}]}]}]},{"id":"tests","name":"Tests","description":"Constraints.","layers":[{"id":"waves","name":"Waves","description":"Gravitational waves.","findings":[{"id":"waves-finding","name":"Waves","description":"Gravitational waves.","questions":[{"text":"What do gravitational wave mergers say about boson stars, according to analyses?","kind":"provenance"},{"text":"Which signals have been tested?","kind":"provenance"}]}]},{"id":"darkmatter","name":"Dark matter","description":"Dark matter link.","findings":[{"id":"darkmatter-finding","name":"Dark matter","description":"Dark matter.","questions":[{"text":"How do boson stars relate to axion or scalar dark matter models?","kind":"provenance"},{"text":"What constraints apply?","kind":"boundary"}]}]}]},{"id":"learn","name":"Learn","description":"Explaining.","layers":[{"id":"explain","name":"Explain","description":"Plain language.","findings":[{"id":"explain-finding","name":"Explain","description":"Plain explanation.","questions":[{"text":"How can boson stars be explained simply while noting their status?","kind":"action"},{"text":"Which caveats apply?","kind":"boundary"}]}]},{"id":"resources","name":"Resources","description":"Reviews.","findings":[{"id":"resources-finding","name":"Resources","description":"Reviews.","questions":[{"text":"Which reviews cover boson stars?","kind":"provenance"},{"text":"Which simulations are notable?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain the boson star hypothesis, its proposed role as dark matter or black hole mimic, citing researchers.","Report observational tests proposed to detect boson stars."],"mustNot":["Present boson stars as observed objects.","Attribute claims or results to researchers who did not make them.","Present speculative models as consensus."],"requiresHuman":["Publishing a claim that an observation supports or rules out the hypothesis."]},"ethics":{"considerations":["Hypothetical objects are easily overstated in popular science; honesty about status matters.","Credit for theoretical work belongs to those who proposed it."],"affectedParties":["Readers and students","Researchers"]},"owners":{"steward":"Nobody owns the idea; the scientific community evaluates it.","roles":[],"masterSystems":[]},"relations":[{"target":"Q5961276","type":"parent","note":"registry parent class"},{"target":"hypothetical star","type":"related","note":"category"},{"target":"black star","type":"related","note":"other black hole alternative"},{"target":"dark matter candidate","type":"related","note":"role"},{"target":"celestial body","type":"related","note":"broader class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.boson-star","Wikidata: Q130402 (https://www.wikidata.org/wiki/Q130402)"]},"properties":{"applicability":"required","items":["Total mass:  kg - Mass is calculated within a specified theoretical model and has no confirmed observational range.","Effective radius:  m - Radius is defined through a stated enclosed mass fraction or field profile because models need not have a sharp surface.","Mass density:  kg/m^3 - Density is calculated as a spatial profile from the assumed bosonic field and gravitational model."]},"recognition":{"applicability":"required","items":["Hypothetical horizonless object","Made of scalar or vector bosons","Neutron stars are made of ordinary matter","Not observed; would appear as a transparent, massive, horizonless object."]},"capabilities":{"applicability":"required","items":["explain what a boson star is","compare with black holes and other exotic compact objects","summarise observational constraints with attribution","clarify hypothetical status"]},"hazards":{"applicability":"required","items":["Presenting the hypothesis as established","Confusing with other exotic objects"]},"interfaces":{"applicability":"required","items":["No regulation"]},"context":{"applicability":"required","items":["Theoretical astrophysics and dark matter research.","mini boson stars","self-interacting boson stars","Proca or vector boson stars","oscillatons and related solitonic objects"]}},"sources":[{"title":"Wikidata item Q130402: boson star","url":"https://www.wikidata.org/wiki/Q130402","note":"identity and sense of the item"},{"title":"Wikipedia: Boson star","url":"https://en.wikipedia.org/wiki/Boson_star","note":"general description of the item"}],"openQuestions":["Should exotic compact objects be a separate entry?","How should simulation results be linked?","How should gravitational wave tests be tracked?"],"resources":{"spec":"/models/things/publications/thing-q130402/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q130402/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T19:32:26Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:28+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}