摘要：In this paper we report on the available X-ray data collected by INTEGRAL,
Swift, and XMM-Newton during the first outburst of the
INTEGRAL transient IGR J17451–3022, discovered in 2014 August. The monitoring observations
provided by the JEM-X instruments on board INTEGRAL and the Swift /XRT
showed that the event lasted for about 9 months and that the emission of the source
remained soft for the entire period. The source emission is dominated by a thermal
component (kT ~
1.2 keV), most likely produced by an accretion disk. The
XMM-Newton observation carried out during the outburst revealed the
presence of multiple absorption features in the soft X-ray emission that could be
associated with the presence of an ionized absorber lying above the accretion disk, as
observed in many high inclination, low mass X-ray binaries. The
XMM-Newton data also revealed the presence of partial and rectangular
X-ray eclipses (lasting about 820 s) together with dips. The rectangular eclipses can be
associated with increases in the overall absorption column density in the direction of the
source. The detection of two consecutive X-ray eclipses in the XMM-Newton
data allowed us to estimate the source orbital period at Porb =
22620.5+2.0-1.8
s (1σ
confidence level).
