| Autor: |
Alekzander Kosakowski, Thomas Kupfer, P. Bergeron, Tyson B. Littenberg |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
The Astrophysical Journal, Vol 959, Iss 2, p 114 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1538-4357 |
| DOI: |
10.3847/1538-4357/ad0ce9 |
| Popis: |
We present an analysis of new and archival data to the 20.506 minute LISA verification binary J052610.42+593445.32 (J0526+5934). Our joint spectroscopic and photometric analysis finds that the binary contains an unseen M _1 = 0.89 ± 0.11 M _⊙ CO-core white dwarf primary with an M _2 = 0.38 ± 0.07 M _⊙ post-core-burning subdwarf, or low-mass white dwarf, companion. Given the short orbital period and relatively large total binary mass, we find that LISA will detect this binary with signal-to-noise ratio 44 after 4 yr of observations. J0526+5934 is expected to merge within 1.8 ± 0.3 Myr and likely result in a D ^6 scenario Type Ia supernova or form a He-rich star that will evolve into a massive single white dwarf. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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