Mazzola, S. M.S. M.MazzolaIaria, R.R.IariaDi Salvo, T.T.Di SalvoDEL SANTO, MELANIAMELANIADEL SANTOSANNA, ALBERTOALBERTOSANNAGambino, A. F.A. F.GambinoRiggio, A.A.RiggioSEGRETO, ALBERTOALBERTOSEGRETOBurderi, L.L.BurderiSantangelo, A.A.SantangeloD'AMICO, NICOLO'NICOLO'D'AMICO2020-12-222020-12-2220190004-6361http://hdl.handle.net/20.500.12386/29076Context. Most of the X-ray binary systems containing neutron stars classified as Atoll sources show two different spectral states, referred to as soft and hard. Moreover, a large number of these systems show a reflection component relativistically smeared in their spectra, which provides information on the innermost region of the system. <BR /> Aims: Our aim is to investigate the poorly studied broadband spectrum of the low-mass X-ray binary system 4U 1702-429, which was recently analysed combining XMM-Newton and INTEGRAL data. The peculiar value of the reflection fraction brought us to analyse further broadband spectra of 4U 1702-429. <BR /> Methods: We re-analysed the spectrum of the XMM-Newton/INTEGRAL observation of 4U 1702-429 in the 0.3-60 keV energy range and we extracted three 0.1-100 keV spectra of the source analysing three observations collected with the BeppoSAX satellite. <BR /> Results: We find that the XMM-Newton/INTEGRAL spectrum is well fitted using a model composed of a disc blackbody plus a Comptonised component and a smeared reflection component. We used the same spectral model for the BeppoSAX spectra, finding that the addition of a smeared reflection component is statistically significant. The best-fit values of the parameters are compatible to each other for the BeppoSAX spectra. We find that the reflection fraction is 0.05<SUB>-0.01</SUB><SUP>+0.3</SUP> for the XMM-Newton/INTEGRAL spectrum and between 0.15 and 0.4 for the BeppoSAX ones. <BR /> Conclusions: The relative reflection fraction and the ionisation parameter are incompatible between the XMM-Newton/INTEGRAL and the BeppoSAX observations and the characteristics of the Comptonising corona suggest that the source was in a soft state in the former observation and in a hard state in the latter.STAMPAenArticle10.1051/0004-6361/2017323832-s2.0-85060383428000455569900002https://www.aanda.org/articles/aa/full_html/2019/01/aa32383-17/aa32383-17.html2019A&A...621A..89MFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems