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Investigations of Positron Annihilation Radiation

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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P.A.Milne, J.D.Kurfess, R.L.Kinzer, M.D.Leising, D.D.Dixon

Astrophysics · Submitted 10 Nov 1999

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Bulge and disk combinations have been compared with the 511 keV line data, demonstrating that extended bulges are favored over a GC point source for every disk model tested.

how it is stated · asserted 1.00 read the record →

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arXiv IDastro-ph/9911184 (version 1)
Pith IDC7DZK3KJ, Pith's permanent record of this paper and its review
CitationD.D.Dixon, J.D.Kurfess, M.D.Leising, P.A.Milne, R.L.Kinzer. "Investigations of Positron Annihilation Radiation." arXiv:astro-ph/9911184 (1999). https://pith.science/paper/C7DZK3KJ
Claim paper

The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,668 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.75 · states limitation 0.85 · human participants 0.02 · controlled comparison 0.30 · randomized assignment 0.01 · states quantitative result 0.13 · compares with prior results 0.86 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

By combining OSSE, SMM and TGRS observations of the galactic center region, Purcell et al. (1997) and Cheng et al. (1997) produced the first maps of galactic positron annihilation. That data-set has been augmented with additional data, both recent and archival, and re-analyzed to improve the spectral fitting. The improved spectral fitting has enabled the first maps of positronium continuum emission and the most extensive maps of 511 keV line emission. Bulge and disk combinations have been compared with the 511 keV line data, demonstrating that extended bulges are favored over a GC point source for every disk model tested. This result is independent of whether OSSE-only, OSSE/SMM, or OSSE/SMM/TGRS data-sets are used. The estimated bulge to disk ratio (and to a lesser extent the total flux) is shown to be dependent upon the assumption of bulge shape. A positive latitude enhancement is shown to have an effect upon the B/D ratio, but this effect is secondary to the choice of bulge shape.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 By combining OSSE, SMM and TGRS observations of the galactic center region, Purcell et al. (1997) and Cheng et al. (1997) produced the first maps of galactic positron annihilation. background 0.99 0.05 0.04 asserted 1.00
s1 That data-set has been augmented with additional data, both recent and archival, and re-analyzed to improve the spectral fitting. method 0.79 0.66 0.02 asserted 1.00
s2 The improved spectral fitting has enabled the first maps of positronium continuum emission and the most extensive maps of 511 keV line emission. result 0.75 0.79 0.15 asserted 1.00
s3 Bulge and disk combinations have been compared with the 511 keV line data, demonstrating that extended bulges are favored over a GC point source for every disk model tested. result 0.99 0.79 0.70 asserted 1.00
s4 This result is independent of whether OSSE-only, OSSE/SMM, or OSSE/SMM/TGRS data-sets are used. result 0.84 0.72 0.13 asserted 1.00
s5 The estimated bulge to disk ratio (and to a lesser extent the total flux) is shown to be dependent upon the assumption of bulge shape. result 0.83 0.85 0.09 asserted 1.00
s6 A positive latitude enhancement is shown to have an effect upon the B/D ratio, but this effect is secondary to the choice of bulge shape. result 0.94 0.84 0.06 asserted 1.00

What kind of paper the classifier reports this is: empirical study 0.90 · evidence from analysis of existing data 1.00.

What was examined, and what was not

sources read
  • arXiv listing abstract v1
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

By combining OSSE, SMM and TGRS observations of the galactic center region, Purcell et al. (1997) and Cheng et al. (1997) produced the first maps of galactic positron annihilation. That data-set has been augmented with additional data, both recent and archival, and re-analyzed to improve the spectral fitting. The improved spectral fitting has enabled the first maps of positronium continuum emission and the most extensive maps of 511 keV line emission. Bulge and disk combinations have been compared with the 511 keV line data, demonstrating that extended bulges are favored over a GC point source for every disk model tested. This result is independent of whether OSSE-only, OSSE/SMM, or OSSE/SMM/TGRS data-sets are used. The estimated bulge to disk ratio (and to a lesser extent the total flux) is shown to be dependent upon the assumption of bulge shape. A positive latitude enhancement is shown to have an effect upon the B/D ratio, but this effect is secondary to the choice of bulge shape.

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