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Resynchronization of the Asynchronous Polar CD Ind

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G. Myers, J. Patterson, E. de Miguel, F. Hambsch, B. Monard, G. Bolt, J. McCormick, R. Rea
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W. Allen

Solar and Stellar Astrophysics · Submitted 3 Jan 2017

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

The authors' main claim We report on the analysis of over 46000 observations of CD Ind taken between 2007 and 2016, combined with previous observations from 1996, and estimate a CD Ind resynchronization time of 6400 +/- 800 years.

how it is stated · asserted 1.00 read the record →

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arXiv ID1701.00556 (version 1)
Pith IDG3GIIDCJ, Pith's permanent record of this paper and its review
CitationB. Monard, E. de Miguel, F. Hambsch, G. Bolt, G. Myers, J. McCormick, J. Patterson, R. Rea, W. Allen. "Resynchronization of the Asynchronous Polar CD Ind." arXiv:1701.00556 (2017). https://pith.science/paper/G3GIIDCJ
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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.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,753 input tokens.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.13 · human participants 0.02 · controlled comparison 0.09 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.92 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

CD Ind is one of only four confirmed asynchronous polars (APs). APs are strongly magnetic cataclysmic variables of the AM Herculis subclass with the characteristic that their white dwarfs rotate a few per cent out of synchronism with their binary orbit. Theory suggests that nova eruptions disrupt previously synchronized states. Following the eruption, the system is expected to rapidly resynchronize over a timescale of centuries. The other three asynchronous polars - V1432 Aql, BY Cam and V1500 Cyg - have resynchronization time estimates ranging from 100 to more than 3500 years, with all but one being less than 1200 years. We report on the analysis of over 46000 observations of CD Ind taken between 2007 and 2016, combined with previous observations from 1996, and estimate a CD Ind resynchronization time of 6400 +/- 800 years. We also estimate an orbital period of 110.820(1) minutes and a current (2016.4) white dwarf spin period of 109.6564(1) minutes.

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 CD Ind is one of only four confirmed asynchronous polars (APs). background 1.00 0.08 0.03 asserted 1.00
s1 APs are strongly magnetic cataclysmic variables of the AM Herculis subclass with the characteristic that their white dwarfs rotate a few per cent out of synchronism with their binary orbit. background 1.00 0.04 0.02 asserted 1.00
s2 Theory suggests that nova eruptions disrupt previously synchronized states. background 1.00 0.04 0.02 hedged possibility 0.99
s3 Following the eruption, the system is expected to rapidly resynchronize over a timescale of centuries. background 1.00 0.04 0.03 hedged possibility 0.70
s4 The other three asynchronous polars - V1432 Aql, BY Cam and V1500 Cyg - have resynchronization time estimates ranging from 100 to more than 3500 years, with all but one being less than 1200 years. background 0.99 0.11 0.03 asserted 0.99
s5 We report on the analysis of over 46000 observations of CD Ind taken between 2007 and 2016, combined with previous observations from 1996, and estimate a CD Ind resynchronization time of 6400 +/- 800 years. result 0.88 0.97 0.91 asserted 1.00
s6 We also estimate an orbital period of 110.820(1) minutes and a current (2016.4) white dwarf spin period of 109.6564(1) minutes. result 1.00 0.95 0.09 asserted 1.00

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from analysis of existing data 0.58.

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

CD Ind is one of only four confirmed asynchronous polars (APs). APs are strongly magnetic cataclysmic variables of the AM Herculis subclass with the characteristic that their white dwarfs rotate a few per cent out of synchronism with their binary orbit. Theory suggests that nova eruptions disrupt previously synchronized states. Following the eruption, the system is expected to rapidly resynchronize over a timescale of centuries. The other three asynchronous polars - V1432 Aql, BY Cam and V1500 Cyg - have resynchronization time estimates ranging from 100 to more than 3500 years, with all but one being less than 1200 years. We report on the analysis of over 46000 observations of CD Ind taken between 2007 and 2016, combined with previous observations from 1996, and estimate a CD Ind resynchronization time of 6400 +/- 800 years. We also estimate an orbital period of 110.820(1) minutes and a current (2016.4) white dwarf spin period of 109.6564(1) minutes.

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