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Differential Astrometry over 15 degrees

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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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M.A. Perez-Torres (1), J.M. Marcaide (1), J.C. Guirado (1), E. Ros (2) ((1) Universidad de Valencia, Spain, (2) MPIfR Bonn, Germany)

Astrophysics · Submitted 2 Dec 1998

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

The authors' main claim This result demonstrates the feasibility of high precision differential astrometry for radio sources separated in the sky by almost 15 degrees, and opens the avenue to its application to larger samples of radio sources.

how it is stated · asserted 1.00 read the record →

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arXiv IDastro-ph/9812056 (version 1)
Pith IDQGGJCBTI, Pith's permanent record of this paper and its review
Citation(2) MPIfR Bonn, E. Ros (2) ((1) Universidad de Valencia, Germany), J.C. Guirado (1), J.M. Marcaide (1), M.A. Perez-Torres (1), Spain. "Differential Astrometry over 15 degrees." arXiv:astro-ph/9812056 (1998). https://pith.science/paper/QGGJCBTI
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.

Open the compiled record

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,000 input tokens, $0.0001 reported.

What the abstract itself states, as probabilities: claims first 0.06 · states limitation 0.11 · human participants 0.02 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.79 · compares with prior results 0.08 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

We observed the pair of radio sources 1150+812 and 1803+784 in November 1993 with a VLBI array, simultaneously recording at 8.4 and 2.3 GHz. We determined the angular separation between the two sources with submilliarcsecond accuracy by using differential techniques. This result demonstrates the feasibility of high precision differential astrometry for radio sources separated in the sky by almost 15 degrees, and opens the avenue to its application to larger samples of radio sources.

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 We observed the pair of radio sources 1150+812 and 1803+784 in November 1993 with a VLBI array, simultaneously recording at 8.4 and 2.3 GHz. method 0.96 0.97 0.02 asserted 0.99
s1 We determined the angular separation between the two sources with submilliarcsecond accuracy by using differential techniques. result 0.85 0.97 0.09 asserted 1.00
s2 This result demonstrates the feasibility of high precision differential astrometry for radio sources separated in the sky by almost 15 degrees, and opens the avenue to its application to larger samples of radio sources. interpretation 1.00 0.82 0.96 asserted 1.00

What kind of paper the classifier reports this is: empirical study 0.99 · evidence from observation or experiment 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

We observed the pair of radio sources 1150+812 and 1803+784 in November 1993 with a VLBI array, simultaneously recording at 8.4 and 2.3 GHz. We determined the angular separation between the two sources with submilliarcsecond accuracy by using differential techniques. This result demonstrates the feasibility of high precision differential astrometry for radio sources separated in the sky by almost 15 degrees, and opens the avenue to its application to larger samples of radio sources.

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