CUSUMANO, GIANCARLOGIANCARLOCUSUMANO0000-0002-8151-1990SEGRETO, ALBERTOALBERTOSEGRETO0000-0001-7341-6603LA PAROLA, VALENTINAVALENTINALA PAROLA0000-0002-8087-6488MASETTI, NICOLANICOLAMASETTI0000-0001-9487-7740D'AI', ANTONINOANTONINOD'AI'0000-0002-5042-1036TAGLIAFERRI, GianpieroGianpieroTAGLIAFERRI0000-0003-0121-07232020-03-042020-03-0420150035-8711http://hdl.handle.net/20.500.12386/23113This work has been supported by ASI grant I/011/07/0. Facility : Swift. This research has made use of data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC) provided by NASA's Goddard Space Flight Center.IGR J19149+1036 is a high-mass X-ray binary detected by INTEGRAL in 2011 in the hard X-ray domain. We have analysed the Burst Alert Telescope (BAT) survey data of the first 103 months of the Swift mission detecting this source at a significance level of ̃30 standard deviations. The timing analysis on the long-term BAT light curve reveals the presence of a strong sinusoidal intensity modulation of 22.25 ± 0.05 d, that we interpret as the orbital period of this binary system. A broad-band (0.3-150 keV) spectral analysis was performed combining the BAT spectrum and the X-Ray Telescope (XRT) spectra from the pointed follow-up observations. The spectrum is adequately modelled with an absorbed power law with a high-energy cutoff at ̃24 keV and an absorption cyclotron feature at ̃31 keV. Correcting for the gravitational redshift, the inferred magnetic field at the neutron star surface is B<SUB>surf</SUB> ̃ 3.6 × 10<SUP>12</SUP> G.STAMPAenArticle10.1093/mnras/stu21412-s2.0-84924455449000347518300076https://academic.oup.com/mnras/article/446/1/1041/29079592015MNRAS.446.1041CFIS/05 - ASTRONOMIA E ASTROFISICAScienze Fisiche Settori ERC (ERC) di riferimento::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_11 Relativistic astrophysics