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EUVE Observations of Her X-1 at the End of the Short High State

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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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D. A. Leahy, H. Marshall

Astrophysics · Submitted 9 Mar 1999

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

The authors' main claim We conclude that: i) the x-ray heated surface of the companion is too cool to produce enough emission; ii) the accretion disk can produce enough emission but does not explain the orbital modulation; iii) reflection of x-rays off of the companion can produce the shape and intensity of the observed lightcurve.

how it is stated · asserted 0.97 read the record →

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arXiv IDastro-ph/9903118 (version 1)
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CitationD. A. Leahy, H. Marshall. "EUVE Observations of Her X-1 at the End of the Short High State." arXiv:astro-ph/9903118 (1999). https://pith.science/paper/DJAIDGIT
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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, 4,360 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.31 · human participants 0.01 · controlled comparison 0.05 · randomized assignment 0.01 · states quantitative result 0.09 · compares with prior results 0.34 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

Observations of Her X-1 by the Extreme Ultraviolet Explorer (EUVE) at the end of the x-ray Short High state are reported here. Her X-1 is found to exhibit a strong orbital modulation of the EUV flux, with a large dip superposed on a broad peak around orbital phase 0.5 when the neutron star is closest the observer. Alternate mechanisms for producing the observed EUV lightcurve are modeled. We conclude that: i) the x-ray heated surface of the companion is too cool to produce enough emission; ii) the accretion disk can produce enough emission but does not explain the orbital modulation; iii) reflection of x-rays off of the companion can produce the shape and intensity of the observed lightcurve. The only viable cause for the large dip at orbital phase 0.5 is shadowing of the companion by the accretion disk.

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 Observations of Her X-1 by the Extreme Ultraviolet Explorer (EUVE) at the end of the x-ray Short High state are reported here. contribution 0.95 0.91 0.02 asserted 0.89
s1 Her X-1 is found to exhibit a strong orbital modulation of the EUV flux, with a large dip superposed on a broad peak around orbital phase 0.5 when the neutron star is closest the observer. result 1.00 0.94 0.08 asserted 1.00
s2 Alternate mechanisms for producing the observed EUV lightcurve are modeled. method 0.96 0.83 0.02 asserted 0.60
s3 We conclude that: i) the x-ray heated surface of the companion is too cool to produce enough emission; ii) the accretion disk can produce enough emission but does not explain the orbital modulation; iii) reflection of x-rays off of the companion can produce the shape and intensity of the observed lightcurve. interpretation 0.82 0.86 0.77 asserted 0.97
s4 The only viable cause for the large dip at orbital phase 0.5 is shadowing of the companion by the accretion disk. interpretation 0.83 0.86 0.48 asserted 1.00

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from observation or experiment 0.87.

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

Observations of Her X-1 by the Extreme Ultraviolet Explorer (EUVE) at the end of the x-ray Short High state are reported here. Her X-1 is found to exhibit a strong orbital modulation of the EUV flux, with a large dip superposed on a broad peak around orbital phase 0.5 when the neutron star is closest the observer. Alternate mechanisms for producing the observed EUV lightcurve are modeled. We conclude that: i) the x-ray heated surface of the companion is too cool to produce enough emission; ii) the accretion disk can produce enough emission but does not explain the orbital modulation; iii) reflection of x-rays off of the companion can produce the shape and intensity of the observed lightcurve. The only viable cause for the large dip at orbital phase 0.5 is shadowing of the companion by the accretion disk.

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