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ShowingImportancePrizesTopicCentral Compact Objects
Central compact objects (CCOs): point-like, thermally emitting X-ray sources at the centers of young supernova remnants (e.g. in Cassiopeia A, Puppis A, Kes 79, HESS J1731-347). Claims about their thermal spectra, surface temperatures, magnetic fields, and atmosphere-composition modeling belong here; CCO claims dominated by mass-radius inference may also carry the compact-object mass and radius ta
X-ray absorption compared with CO and HI gas columns places HESS J1731-347 at least 3.2 kiloparsecs away
ContestedCredible evidence or argument exists on multiple sides.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →HESS J1731-347Astrophysicsimportance · notableImportance 0.45, from 0 to 1 · notable: a contested point in a live debate (also the default before judging). Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
Phase-averaged X-ray spectra alone cannot discriminate between carbon-atmosphere and hydrogen hot-spot models of central compact objects
SupportedEvidence favors the claim, but the chain is incomplete or the sources are secondary.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Neutron Star Atmosphere Modelsimportance · minorImportance 0.35, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The X-ray spectrum of the compact object in HESS J1731-347 is well described by a uniform-temperature carbon atmosphere model
VerifiedThe claim traces to reliable primary sources through a clear chain of evidence.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →HESS J1731-347Neutron Star Atmosphere ModelsAstrophysicsimportance · minorImportance 0.35, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The pulsed-fraction upper limits for HESS J1731-347 exclude most hot-spot viewing geometries
VerifiedThe claim traces to reliable primary sources through a clear chain of evidence.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →HESS J1731-347Pulsation Non-detection Geometry Constraintsimportance · minorImportance 0.35, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
Hydrogen-atmosphere hot-spot models fit the X-ray spectrum of HESS J1731-347 as well as carbon-atmosphere models
VerifiedThe claim traces to reliable primary sources through a clear chain of evidence.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Neutron Star Atmosphere ModelsHESS J1731-347Astrophysicsimportance · notableImportance 0.45, from 0 to 1 · notable: a contested point in a live debate (also the default before judging). Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The compact object in HESS J1731-347 has a mass near 0.77 solar masses and a radius near 10.4 km
ContestedCredible evidence or argument exists on multiple sides.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Compact Object Mass and RadiusHESS J1731-347Astrophysicsimportance · notableImportance 0.60, from 0 to 1 · notable: a contested point in a live debate (also the default before judging). Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
X-ray spectral fits toward HESS J1731-347 yield absorption columns of roughly 1.0 to 1.5 × 10^22 hydrogen atoms per square centimeter
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →HESS J1731-347X-ray Absorption Column DensityAstrophysicsimportance · settledImportance 0.20, from 0 to 1 · settled: uncontested, so low even when much depends on it. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
For at least one unpulsed central compact object, improved X-ray spectral data excludes an acceptable carbon-atmosphere fit
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Neutron Star Atmosphere Modelsimportance · settledImportance 0.20, from 0 to 1 · settled: uncontested, so low even when much depends on it. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
Hydrogen-atmosphere hot-spot models fit the X-ray spectra of unpulsed central compact objects as well as carbon-atmosphere models
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Neutron Star Atmosphere Modelsimportance · settledImportance 0.20, from 0 to 1 · settled: uncontested, so low even when much depends on it. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
Uniform-temperature carbon atmosphere models acceptably fit the phase-averaged X-ray spectra of pulsed central compact objects with hot spots
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Neutron Star Atmosphere Modelsimportance · settledImportance 0.20, from 0 to 1 · settled: uncontested, so low even when much depends on it. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
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