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Merger Precursor: Year-long Transients Preceding Mergers of Low-mass Stripped Stars with Compact Objects

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Daichi Tsuna, Samantha C. Wu, Jim Fuller, Yize Dong, Anthony L. Piro

High Energy Astrophysical Phenomena · Submitted 18 Jun 2024

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

The authors' main claim Modeling the mass transfer history as well as the wind launched by super-Eddington accretion onto the NS, we find that such systems can power slowly rising transients with timescales as long as years, and luminosities of $\sim 10^{40}$-$10^{41}$ erg s$^{-1}$ from optical to UV.

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arXiv ID2406.12472 (version 3)
Pith IDF7OB6OCE, Pith's permanent record of this paper and its review
CitationAnthony L. Piro, Daichi Tsuna, Jim Fuller, Samantha C. Wu, Yize Dong. "Merger Precursor: Year-long Transients Preceding Mergers of Low-mass Stripped Stars with Compact Objects." arXiv:2406.12472 (2024). https://pith.science/paper/F7OB6OCE
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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, 5,142 input tokens.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.23 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.97 · compares with prior results 0.19 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

Binary mass transfer can occur at high rates due to rapid expansion of the donor's envelope. In the case where mass transfer is unstable, the binary can rapidly shrink its orbit and lead to a merger. In this work we consider the appearance of the system preceding merger, specifically for the case of a low-mass ($\approx 2.5$-$3~M_\odot$) helium star with a neutron star (NS) companion. Modeling the mass transfer history as well as the wind launched by super-Eddington accretion onto the NS, we find that such systems can power slowly rising transients with timescales as long as years, and luminosities of $\sim 10^{40}$-$10^{41}$ erg s$^{-1}$ from optical to UV. The final explosion following the merger (or core-collapse of the helium star in some cases) leads to an interaction-powered transient with properties resembling Type Ibn supernovae (SNe), possibly with a bright early peak powered by shock cooling emission for merger-powered explosions. We apply our model to the Type Ibn SN 2023fyq, that displayed a long-term precursor activity from years before the terminal explosion.

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 Binary mass transfer can occur at high rates due to rapid expansion of the donor's envelope. background 1.00 0.06 0.02 asserted 0.63
s1 In the case where mass transfer is unstable, the binary can rapidly shrink its orbit and lead to a merger. background 1.00 0.06 0.04 hedged possibility 0.76
s2 In this work we consider the appearance of the system preceding merger, specifically for the case of a low-mass ($\approx 2.5$-$3~M_\odot$) helium star with a neutron star (NS) companion. contribution 0.97 0.44 0.05 asserted 0.81
s3 Modeling the mass transfer history as well as the wind launched by super-Eddington accretion onto the NS, we find that such systems can power slowly rising transients with timescales as long as years, and luminosities of $\sim 10^{40}$-$10^{41}$ erg s$^{-1}$ from optical to UV. result 0.98 0.96 0.77 asserted 0.97
s4 The final explosion following the merger (or core-collapse of the helium star in some cases) leads to an interaction-powered transient with properties resembling Type Ibn supernovae (SNe), possibly with a bright early peak powered by shock cooling emission for merger-powered explosions. result 0.67 0.64 0.16 hedged possibility 0.75
s5 We apply our model to the Type Ibn SN 2023fyq, that displayed a long-term precursor activity from years before the terminal explosion. contribution 0.78 0.87 0.13 asserted 1.00

What kind of paper the classifier reports this is: simulation study 0.59 · evidence from simulation or computation 1.00.

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sources read
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  • figures and tables
  • references and citing sentences
  • relations to other papers
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  • P abstract
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  • 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

Binary mass transfer can occur at high rates due to rapid expansion of the donor's envelope. In the case where mass transfer is unstable, the binary can rapidly shrink its orbit and lead to a merger. In this work we consider the appearance of the system preceding merger, specifically for the case of a low-mass ($\approx 2.5$-$3~M_\odot$) helium star with a neutron star (NS) companion. Modeling the mass transfer history as well as the wind launched by super-Eddington accretion onto the NS, we find that such systems can power slowly rising transients with timescales as long as years, and luminosities of $\sim 10^{40}$-$10^{41}$ erg s$^{-1}$ from optical to UV. The final explosion following the merger (or core-collapse of the helium star in some cases) leads to an interaction-powered transient with properties resembling Type Ibn supernovae (SNe), possibly with a bright early peak powered by shock cooling emission for merger-powered explosions. We apply our model to the Type Ibn SN 2023fyq, that displayed a long-term precursor activity from years before the terminal explosion.

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9 arXiv papers cite this in 9 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

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What it cites · 9 sentences without a confident label

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