Serpens X-1 observed byINTEGRAL
Open Access
- 6 August 2004
- journal article
- research article
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 423 (2) , 651-656
- https://doi.org/10.1051/0004-6361:20040210
Abstract
Here we report results of an INTEGRAL-AO1 observation of the X-ray burst and atoll source Ser X-1 performed in May 2003. The object was observed for a total on-source time of 400 ks but nearly 8° off-axis due to its amalgamation with an observation of SS 433, the pointing target source. Ser X-1 has been clearly detected up to 30 keV with unprecedented positional accuracy for high-energy emission. The 20–30 keV light curve showed substantial variability during the observation. Comparison with previous observations indicates that the source was in its high (“banana”) state and displayed a soft spectrum during the INTEGRAL pointing. A (non simultaneous) radio-to-γ-rays broad-band spectral energy distribution is also presented for the first time and discussed.Keywords
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