Serpens X-1 observed by INTEGRAL
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.
Keywords
Cite
@article{arxiv.astro-ph/0405277,
title = {Serpens X-1 observed by INTEGRAL},
author = {N. Masetti and L. Foschini and E. Palazzi and V. Beckmann and N. Lund and S. Brandt and N. J. Westergaard and L. Amati and E. Caroli and S. Del Sordo and G. Di Cocco and P. Durouchoux and R. Farinelli and F. Frontera and M. Orlandini and A. Zdziarski},
journal= {arXiv preprint arXiv:astro-ph/0405277},
year = {2009}
}
Comments
6 pages, 3 figures, 1 table; accepted for publication on Astronomy & Astrophysics, main journal. Final version of the paper including the A&A Language Editor's comments