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Astron. Astrophys. 345, 826-830 (1999)

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BeppoSAX and ASCA observations of the galactic bulge source 1E 1743.1-2843

D.I. Cremonesi 1, S. Mereghetti 2, L. Sidoli 2,3 and G.L. Israel 4

1 INTEGRAL Science Data Centre, Chemin d'Ecogia 16, CH-1290 Versoix, Switzerland (davide.cremonesi@obs.unige.ch)
2 Istituto di Fisica Cosmica "G.Occhialini", CNR, Via Bassini 15, I-20133 Milano, Italy
3 Dipartimento di Fisica, Università di Milano, Via Celoria 16, I-20133 Milano, Italy
4 Osservatorio Astronomico di Roma, Via dell'Osservatorio 2, I-00040 Monteporzio Catone (Roma), Italy

Received 22 December 1998 / Accepted 15 February 1999


We report the results of BeppoSAX and ASCA observations of the X-ray source 1E 1743.1-2843, located in the region of the galactic center, performed between 1993 and 1998. Observations spanning almost twenty years show that 1E 1743.1-2843 is a persistent X-ray source, most likely powered by accretion onto a compact galactic object. The absence of periodic pulsations and the relatively soft X-ray spectrum favour a Low Mass X-ray Binary containing a neutron star. However, no Type I X-ray bursts have been observed in more than 650 ks of observations, leaving other interpretations possible.

Key words: stars: individual: 1E 1743.1 – 2843 – Galaxy: center – X-rays: stars

© European Southern Observatory (ESO) 1999

Online publication: April 28, 1999