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arXiv · astro-ph/0405277

Serpens X-1 observed by INTEGRAL

N. Masetti·L. Foschini·E. Palazzi·V. Beckmann·N. Lund·S. Brandt·N. J. Westergaard·L. Amati·E. Caroli·S. Del Sordo·G. Di Cocco·P. Durouchoux·R. Farinelli·F. Frontera·M. Orlandini·A. Zdziarski
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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 degrees 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-gamma-rays broad-band spectral energy distribution is also presented for the first time and discussed.

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N. Masetti, L. Foschini, E. Palazzi, V. Beckmann, N. Lund, S. Brandt, N. J. Westergaard, L. Amati, E. Caroli, S. Del Sordo, G. Di Cocco, P. Durouchoux, R. Farinelli, F. Frontera, M. Orlandini, A. Zdziarski. 2004-05-21. Serpens X-1 observed by INTEGRAL. https://doi.org/10.1051/0004-6361%3A20040210

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