期刊
ASTRONOMY & ASTROPHYSICS
卷 618, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201833271
关键词
stars: atmospheres; stars: neutron; X-rays: stars
资金
- Deutsches Zentrum for Luft-und Raumfahrt (DLR)
- Deutsche Forschungsgemeinschaft (DFG)
- German Research Foundation (DFG) [WE 1312/48-1]
- Russian Science Foundation [14-12-01287]
- Russian Science Foundation [17-12-00090] Funding Source: Russian Science Foundation
We report on the analysis of XMM-Newton observations of the central compact object CXOU J160103.1-513353 located in the center of the non-thermally emitting supernova remnant (SNR) G330.2 + 1.0. The X-ray spectrum of the source is well described with either single-component carbon or two-component hydrogen atmosphere models. In the latter case, the observed spectrum is dominated by the emission from a hot component with a temperature similar to 3 : 9 MK, corresponding to the emission from a hotspot occupying similar to 1% of the stellar surface (assuming a neutron star with mass M = 1 : 5 M-circle dot, radius of 12 km, and distance of similar to 5 kpc as determined for the SNR). The statistics of the spectra and obtained upper limits on the pulsation amplitude expected for a rotating neutron star with hot spots do not allow us to unambiguously distinguish between these two scenarios. We discuss, however, that while the non-detection of the pulsations can be explained by the unfortunate orientation in CXOU J160103.1-513353, this is not the case when the entire sample of similar objects is considered. We therefore conclude that the carbon atmosphere scenario is more plausible.
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