Pulse frequency changes of 1E 2259+586 and the binary interpretation
ASTROPHYSICAL JOURNAL, cilt.460, sa.1, ss.470-477, 1996 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 460 Sayı: 1
- Basım Tarihi: 1996
- Doi Numarası: 10.1086/176985
- Dergi Adı: ASTROPHYSICAL JOURNAL
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.470-477
- Anahtar Kelimeler: binaries, close, pulsars, individual (1E 2259+586), X-rays, stars, X-RAY PULSAR, SUPERNOVA REMNANT G109.1-1.0, NEUTRON-STARS, TIMING OBSERVATIONS, ACCRETION DISK, NOISE, 1E2259+586, EVOLUTION, MODEL, EXTRAORDINARY
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
Pulse frequencies from the archival ROSAT observations of 1E 2259+586 are presented. A short-term spin-up episode superposed on the secular spin-down trend is observed. Combining the previously published pulse frequencies, we estimate the variance of the angular velocity over a 15 yr span of observations. The level of fluctuations in angular velocity is similar to that of established accreting binary neutron stars. These results favor accretion by a neutron star from a very low mass companion as the source of the X-ray luminosity, although accretion by a solitary neutron star from a residual disk might be possible.