BOZZO E., ROMANO P., FERRIGNO C., CAMPANA S., FALANGA M., ISRAEL G., WALTER R. and STELLA L.
Abstract (from CDS):
XTEJ1743-363 is a poorly known hard X-ray transient, which displays short and intense flares similar to those observed from supergiant fast X-ray transients. The probable optical counterpart shows spectral properties similar to those of an M8 III giant, thus suggesting that XTEJ1743-363 belongs to the class of the symbiotic X-ray binaries class. In this paper we report on the first dedicated monitoring campaign of the source in the soft X-ray range with XMM-Newton and Swift/XRT. These observations confirmed the association of XTEJ1743-363 with the previously suggested M8 III giant and the classification of the source as a member of the symbiotic X-ray binaries. In the soft X-ray domain, XTEJ1743-363 displays a high absorption (∼6x1022cm–2) and variability on time scales of hundreds to few thousand seconds, typical of wind-accreting systems. A relatively faint flare (peak X-ray flux 3x10–11erg/cm2/s) lasting ∼4ks is recorded during the XMM-Newton observation and interpreted in terms of the wind accretion scenario.