Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)

Detailed spectrophotometric analysis of the superluminous and fast evolving SN 2019neq




Julkaisun tekijätFiore Achille, Benetti Stefano, Tartaglia Leonardo, Jerkstrand Anders, Salmaso Irene, Tomasella Lina, Morales-Garoffolo Antonia, Geier Stefan, Elias-Rosa Nancy, Cappellaro Enrico, Wang Xiaofeng, Mo Jun, Chen Zhihao, Yan Shengyu, Pastorello Andrea, Mazzali Paolo A, Ciolfi Riccardo, Cai Yongzhi, Fraser Morgan, Gutiérrez Claudia P, Karamehmetoglu Emir, Kuncarayakti Hanindyo, Moran Shane, Ochner Paolo, Reguitti Andrea, Reynolds Thomas M, Valerin Giorgio

KustantajaOxford University Press

Julkaisuvuosi2024

JournalMonthly Notices of the Royal Astronomical Society

Tietokannassa oleva lehden nimiMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Lehden akronyymiMON NOT R ASTRON SOC

Volyymi527

Julkaisunumero3

Aloitussivu6473

Lopetussivun numero6494

Sivujen määrä22

ISSN0035-8711

eISSN1365-2966

DOIhttp://dx.doi.org/10.1093/mnras/stad3655

Verkko-osoitehttps://academic.oup.com/mnras/article/527/3/6473/7452888

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/387084423


Tiivistelmä
SN 2019neq was a very fast evolving superluminous supernova. At a redshift z = 0.1059, its peak absolute magnitude was -21.5 +/- 0.2 mag in g band. In this work, we present data and analysis from an extensive spectrophotometric follow-up campaign using multiple observational facilities. Thanks to a nebular spectrum of SN 2019neq, we investigated some of the properties of the host galaxy at the location of SN 2019neq and found that its metallicity and specific star formation rate are in a good agreement with those usually measured for SLSNe-I hosts. We then discuss the plausibility of the magnetar and the circumstellar interaction scenarios to explain the observed light curves, and interpret a nebular spectrum of SN 2019neq using published SUMO radiative-transfer models. The results of our analysis suggest that the spin-down radiation of a millisecond magnetar with a magnetic field B similar or equal to 6 x 10(14) G could boost the luminosity of SN 2019neq.

Ladattava julkaisu

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Last updated on 2024-02-04 at 13:19