Physics – Nuclear Physics
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nuphs..69...96p&link_type=abstract
Nuclear Physics B Proceedings Supplements, Volume 69, Issue 1-3, p. 96-99.
Physics
Nuclear Physics
Scientific paper
The 7s X-ray pulsar 1E 2259+586 and the supernova remnant (SNR) G109.1-1.0 (CTB 109) were observed by BeppoSAX in 1996 November. We confirm the ASCA discovery of an additional low-energy spectral component from 1E 2259+586. This can be modeled as a 0.44keV blackbody, but we cannot exclude that some, or all, of this emission arises from the part of the SNR that lies within the pulsar's extraction region. The G109.1-1.0 spectrum is well fit with a non-equilibrium ionization plasma model with a best-fit temperature of 0.95keV. The derived mass for the X-ray emitting plasma (~15-20Msolar) and its near cosmic abundances imply that the X-ray emission comes mainly from mildly enriched, swept-up circumstellar material. The spectrum is strongly out of equilibrium with an ionization age of only 3000 yr.
Coe Malcolm J.
Favata Fabio
Israel Gian Luca
Mereghetti Sandro
Oosterbroek Tim
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