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The Hard X-Ray Emission from Scorpius X-1 as seen by INTEGRAL
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sturner, Steven J. |
| Copyright Year | 2009 |
| Abstract | We present the results of our hard X-ray and gamma-ray study of the LMXB Sco X-1 utilizing INTEGRAL data as well as contemporaneous RXTE PCA data. We have investigated the hard X-ray spectral properties of Sco X-1 including the nature of the high-energy, nonthermal component and its possible correlations with the location of the source on the soft X-ray color-color diagram. We find that Sco X-1 follows two distinct spectral tracks when the 20-60 keV count rate is >130 counts/second. One state is a hard state which exhibits a significant high-energy, powerlaw tail to the lower energy thermal spectrum. The other state shows a much less significant high-energy component. We found suggestive evidence for a correlation of these hard and soft high-energy states with the position of Sco X-1 on the low-energy X-ray color-color diagram. We have searched for similar behavior in 2 other Z sources: GX 17+2 and GX 5-1 with negative results. |
| Starting Page | 041 |
| Ending Page | 041 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.22323/1.067.0041 |
| Volume Number | 67 |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080037795.pdf |
| Alternate Webpage(s) | https://pos.sissa.it/067/041/pdf |
| Alternate Webpage(s) | https://doi.org/10.22323/1.067.0041 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
