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A model for nulling and mode changing in pulsars

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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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A. N. Timokhin

High Energy Astrophysical Phenomena · Submitted 16 Dec 2009

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

The authors' main claim We propose that in some pulsars the magnetosphere has different states with different geometries or/and different distributions of currents, it occasionally switches between them.

how it is stated · hedged possibility 0.62 read the record →

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arXiv ID0912.2995 (version 3)
Pith ID47INDFQM, Pith's permanent record of this paper and its review
CitationA. N. Timokhin. "A model for nulling and mode changing in pulsars." arXiv:0912.2995 (2009). https://pith.science/paper/47INDFQM
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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-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,385 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.19 · human participants 0.01 · controlled comparison 0.04 · randomized assignment 0.01 · states quantitative result 0.84 · compares with prior results 0.04 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v3. Results and the main claim are underlined; .

We propose that in some pulsars the magnetosphere has different states with different geometries or/and different distributions of currents, it occasionally switches between them. These states have different spindown rates and emission beams, in some of the states no radioemission is produced at all. Switching into a different state manifests as a mode change when we see different parts of the emission beam or the beams in different states have significantly different geometries, it manifests as nulling when we either miss the new beam or no radioemission is generated in the new state. We show that modest variations in the beam shape can be accompanied by large variations in the pulsar spindown rate W - the dependence of W on the opening angle of the emission beam $\alpha$ can be as strong as W\propto\alpha^4. We speculate about physical mechanisms which may cause reconfiguration of the magnetosphere.

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 propose that in some pulsars the magnetosphere has different states with different geometries or/and different distributions of currents, it occasionally switches between them. contribution 0.97 0.33 0.50 hedged possibility 0.62
s1 These states have different spindown rates and emission beams, in some of the states no radioemission is produced at all. contribution 0.46 0.19 0.15 asserted 0.99
s2 Switching into a different state manifests as a mode change when we see different parts of the emission beam or the beams in different states have significantly different geometries, it manifests as nulling when we either miss the new beam or no radioemission is generated in the new state. interpretation 0.89 0.14 0.30 asserted 0.98
s3 We show that modest variations in the beam shape can be accompanied by large variations in the pulsar spindown rate W - the dependence of W on the opening angle of the emission beam $\alpha$ can be as strong as W\propto\alpha^4. result 1.00 0.90 0.25 asserted 0.98
s4 We speculate about physical mechanisms which may cause reconfiguration of the magnetosphere. interpretation 0.63 0.21 0.04 speculative 1.00

What kind of paper the classifier reports this is: theoretical result 0.98 · evidence from argument 0.52.

What was examined, and what was not

sources read
  • arXiv listing abstract v3
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 propose that in some pulsars the magnetosphere has different states with different geometries or/and different distributions of currents, it occasionally switches between them. These states have different spindown rates and emission beams, in some of the states no radioemission is produced at all. Switching into a different state manifests as a mode change when we see different parts of the emission beam or the beams in different states have significantly different geometries, it manifests as nulling when we either miss the new beam or no radioemission is generated in the new state. We show that modest variations in the beam shape can be accompanied by large variations in the pulsar spindown rate W - the dependence of W on the opening angle of the emission beam $\alpha$ can be as strong as W\propto\alpha^4. We speculate about physical mechanisms which may cause reconfiguration of the magnetosphere.

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References
How the literature uses it

3 arXiv papers cite this in 5 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 4 sentences without a confident label

Cites it as background 1 paper
  • Many models have been developed to explain the phenomena; some consider the plasma in the magnetosphere and how it is connected to the global charge distribution [ref] , others suggest variations in the particle acceleration region [ref] or a twisted magnetosphere [ref] .

    Understanding the Neutron Star Population with the SKAO Telescopes · Rotating Radio Transients and Intermittent Pulsars · 0.94

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