A black widow population dissection through HiPERCAM multiband light-curve modelling

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dc.contributor.authorMata Sánchez, D.
dc.contributor.authorKennedy, Mark R.
dc.contributor.authorClark, C. J.
dc.contributor.authorBreton, R. P.
dc.contributor.authorDhillon, V. S.
dc.contributor.authorVoisin, G.
dc.contributor.authorCamilo, F.
dc.contributor.authorLittlefair, S.
dc.contributor.authorMarsh, T. R.
dc.contributor.funderHorizon 2020
dc.contributor.funderEuropean Regional Development Fund
dc.contributor.funderConsejería de Educación, Universidades, Cultura y Deportes, Gobierno de Canarias
dc.contributor.funderMinisterio de Ciencia e Innovación
dc.contributor.funderRoyal Society
dc.date.accessioned2023-11-10T15:36:23Z
dc.date.available2023-11-01T10:29:13Zen
dc.date.available2023-11-10T15:36:23Z
dc.date.issued2023-01-19
dc.date.updated2023-11-01T10:29:16Zen
dc.description.abstractBlack widows are extreme millisecond pulsar binaries where the pulsar wind ablates their low-mass companion stars. In the optical range, their light curves vary periodically due to the high irradiation and tidal distortion of the companion, which allows us to infer the binary parameters. We present simultaneous multiband observations obtained with the HIPERCAM instrument at the 10.4-m GTC telescope for six of these systems. The combination of this five-band (us, gs,rs, is, zs) fast photometer with the world’s largest optical telescope enables us to inspect the light curve range near minima. We present the first light curve for PSR J1641+8049, as well as attain a significant increase in signal to noise and cadence compared with previous publications for the remaining five targets: PSR J0023+0923, PSR J0251+2606, PSR J0636+5129, PSR J0952−0607, and PSR J1544+4937. We report on the results of the light-curve modelling with the ICARUS code for all six systems, which reveals some of the hottest and densest companion stars known. We compare the parameters derived with the limited but steadily growing black widow population for which optical modelling is available. We find some expected correlations, such as that between the companion star mean density and the orbital period of the system, which can be attributed to the high number of Roche-lobe filling companions. On the other hand, the positive correlation between the orbital inclination and the irradiation temperature of the companion is puzzling. We propose such a correlation would arise if pulsars with magnetic axis orthogonal to their spin axis are capable of irradiating their companions to a higher degre
dc.description.sponsorshipHorizon 2020 (grant agreement No. 715051; Spiders); European Regional Development Fund (PROID2021010132 (ACCISI/FEDER, UE)); Ministerio de Ciencia e Innovación (Europa Excelencia grant (EUR2021-122010)); Royal Society (Newton International Fellowship NIF171019)
dc.description.statusPeer reviewed
dc.description.versionAccepted Version
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMata Sánchez, D., Kennedy, M. R., Clark, C. J., Breton, R. P., Dhillon, V. S., Voisin, G., Camilo, F., Littlefair, S., Marsh, T. R. and Stringer, J. (2023) 'A black widow population dissection through HiPERCAM multiband light-curve modelling', Monthly Notices of the Royal Astronomical Society, 520(2), pp.2217-2244. doi: 10.1093/mnras/stad203
dc.identifier.doi10.1093/mnras/stad203en
dc.identifier.eissn1365-2966
dc.identifier.endpage2244
dc.identifier.issn0035-8711
dc.identifier.issued2
dc.identifier.journaltitleMonthly Notices of the Royal Astronomical Society
dc.identifier.startpage2217
dc.identifier.urihttps://hdl.handle.net/10468/15221
dc.identifier.volume520
dc.language.isoenen
dc.publisherOxford University Press
dc.rights© 2023, the Authors. Published by Oxford University Press on behalf of Royal Astronomical Society. This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society, following peer review. The version of record [Mata Sánchez, D., Kennedy, M. R., Clark, C. J., Breton, R. P., Dhillon, V. S., Voisin, G., Camilo, F., Littlefair, S., Marsh, T. R. and Stringer, J. (2023) 'A black widow population dissection through HiPERCAM multiband light-curve modelling', Monthly Notices of the Royal Astronomical Society, 520(2), pp.2217-2244. doi: 10.1093/mnras/stad203] is available online at: https://doi.org/10.1093/mnras/stad203
dc.subjectStars: neutron
dc.subjectPulsars: individual
dc.subjectPSR J0023+0923
dc.subjectPSR J0251+2606
dc.subjectPSR J0636+5129
dc.subjectPSR J0952−0607
dc.subjectPSR J1544+4937
dc.subjectPSR J1641+8049
dc.titleA black widow population dissection through HiPERCAM multiband light-curve modellingen
dc.typeArticle (peer-reviewed)
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