2020
DOI: 10.1093/mnras/staa395
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Identifying the formation mechanism of redback pulsars

Abstract: We analyse the evolution of close binary systems containing a neutron star that lead to the formation of redback pulsars. Recently there has been some debate on the origin of such systems and the formation mechanism of redbacks may still be considered as an open problem. We show that the operation of a strong evaporation mechanism, starting from the moment when the donor star becomes fully convective (or alternatively since the formation of the neutron star by accretion induced collapse), produces systems with… Show more

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Cited by 12 publications
(13 citation statements)
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“…It is instructive to compare our evolutionary tracks to previous studies that computed similar tracks (Chen et al 2013;Benvenuto et al 2015;De Vito et al 2020). In those studies, companions are also initially kept at stable Roche-lobe overflow, but the angular momentum loss rate is calculated using an extrapolation of the Rappaport et al (1983) formula, whereas we derive an appropriate rate for evaporating spiders (Section 3.1.2).…”
Section: Resultsmentioning
confidence: 94%
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“…It is instructive to compare our evolutionary tracks to previous studies that computed similar tracks (Chen et al 2013;Benvenuto et al 2015;De Vito et al 2020). In those studies, companions are also initially kept at stable Roche-lobe overflow, but the angular momentum loss rate is calculated using an extrapolation of the Rappaport et al (1983) formula, whereas we derive an appropriate rate for evaporating spiders (Section 3.1.2).…”
Section: Resultsmentioning
confidence: 94%
“…A key feature in previous black widow and redback calculations is the abrupt shutoff of magnetic braking once the companion's radiative core vanishes and it becomes fully convective, at about 0.3M ⊙ on the main sequence (Chen et al 2013;De Vito et al 2020). This procedure, following Rappaport et al (1983), is based on the assumption that the magnetic field is generated at the inner radiative-convective boundary (the 'tachocline').…”
Section: Magnetic Brakingmentioning
confidence: 99%
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