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• W3099528083 endingPage "A51" @default.
• W3099528083 startingPage "A51" @default.
• W3099528083 abstract "Magnetars are regarded as the most magnetized neutron stars in the Universe. Aiming to unveil what kinds of stars and supernovae can create magnetars, we have performed a state-of-the-art spatially resolved spectroscopic X-ray study of the supernova remnants (SNRs) Kes 73, RCW 103, and N49, which host magnetars 1E 1841−045, 1E 161348−5055, and SGR 0526−66, respectively. The three SNRs are O- and Ne-enhanced and are evolving in the interstellar medium with densities of > 1 − 2 cm −3 . The metal composition and dense environment indicate that the progenitor stars are not very massive. The progenitor masses of the three magnetars are constrained to be < 20 M ⊙ (11–15 M ⊙ for Kes 73, ≲13 M ⊙ for RCW 103, and ∼13 − 17 M ⊙ for N49). Our study suggests that magnetars are not necessarily made from very massive stars, but originate from stars that span a large mass range. The explosion energies of the three SNRs range from 10 50 erg to ∼2 × 10 51 erg, further refuting that the SNRs are energized by rapidly rotating (millisecond) pulsars. We report that RCW 103 is produced by a weak supernova explosion with significant fallback, as such an explosion explains the low explosion energy (∼10 50 erg), small observed metal masses ( M O ∼ 4 × 10 −2 M ⊙ and M Ne ∼ 6 × 10 −3 M ⊙ ), and sub-solar abundances of heavier elements such as Si and S. Our study supports the fossil field origin as an important channel to produce magnetars, given the normal mass range ( M ZAMS < 20 M ⊙ ) of the progenitor stars, the low-to-normal explosion energy of the SNRs, and the fact that the fraction of SNRs hosting magnetars is consistent with the magnetic OB stars with high fields." @default.
• W3099528083 created "2020-11-23" @default.
• W3099528083 creator A5012827744 @default.
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• W3099528083 date "2019-09-01" @default.
• W3099528083 modified "2023-10-18" @default.
• W3099528083 title "Spatially resolved X-ray study of supernova remnants that host magnetars: Implication of their fossil field origin" @default.
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• W3099528083 doi "https://doi.org/10.1051/0004-6361/201936002" @default.
• W3099528083 hasPublicationYear "2019" @default.
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