期刊
ASTROPHYSICAL JOURNAL
卷 806, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/806/1/89
关键词
stars: coronae; stars: neutron; X-rays: binaries; X-rays: bursts
资金
- Chinese NSFC [11473027, 11133002, 11103020]
- XTP project [XDA 04060604]
- Strategic Priority Research Program The Emergence of Cosmological Structures of the Chinese Academy of Sciences [XDB09000000]
- Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences [XDA04010300]
- Chinese Academy of Sciences [2013-T2J0007]
- [AYA2012-39303]
- ICREA Funding Source: Custom
Type I X-ray bursts on the surface of a neutron star are a unique probe into accretion in X-ray binary systems. However, we know little about the feedback of the burst emission on accretion. Hard X-ray shortages and enhancements of the persistent emission at soft X-rays have been observed. To put these findings in context with the aim of understanding the possible mechanism underneath, we investigated 68 bursts seen by the Rossi X-ray Timing Explorer from the clocked burster GS 1826-238. We diagnosed jointly the burst influence of both soft and hard X-rays, and we found that the observations can be described by the CompTT model with variable normalization, electron temperature, and optical depth. Putting these results in a scenario of coronal Compton cooling via the burst emission would lead to a shortage of cooling power, which may suggest that additional considerations, like the influence of the burst on corona formation, should be accounted for as well.
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