NuSTAR rules out a cyclotron line in the accreting magnetar candidate 4U2206+54
- Based on our new NuSTAR X-ray telescope data, we rule out any cyclotron line up to 60 keV in the spectra of the high-mass X-ray binary 4U2206+54. In particular, we do not find any evidence of the previously claimed line around 30 keV, independently of the source flux, along the spin pulse. The spin period has increased significantly, since the last observation, up to 5750 +/- 10 s, confirming the rapid spin-down rate (nu)over dot = -1.8 x 10(-14) Hz s(-1). This behaviour might be explained by the presence of a strongly magnetized neutron star (B-s > several times 10(13) G) accreting from the slow wind of its main-sequence O9.5 companion.
| Author details: | J. M. Torrejon, Pablo ReigORCiD, F. Fürst, M. Martinez-Chicharro, K. Postnov, Lida OskinovaORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1093/mnras/sty1628 |
| ISSN: | 0035-8711 |
| ISSN: | 1365-2966 |
| Title of parent work (English): | Monthly notices of the Royal Astronomical Society |
| Publisher: | Oxford Univ. Press |
| Place of publishing: | Oxford |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2018/06/20 |
| Publication year: | 2018 |
| Release date: | 2021/10/08 |
| Tag: | Stars: individual: 4U2206+54, BD+53 2790; X-rays: binaries |
| Volume: | 479 |
| Issue: | 3 |
| Number of pages: | 7 |
| First page: | 3366 |
| Last Page: | 3372 |
| Funding institution: | Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-502-12025]; [ESP2017-85691-P] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Peer review: | Referiert |
| Publishing method: | Open Access / Green Open-Access |
