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X-ray and optical-to-infrared follow-up observations of the transient X-ray burster SAX J1810.8-2609

J. Greiner, A. J. Castro-Tirado, Th. Boller, H. W. Duerbeck, S. Covino, G. L. Israel, M. J. D. Linden-Vornle, X. Otazu-Porter

astro-pharXiv:astro-ph/9907017

Abstract

We have performed a ROSAT follow-up observation of the X-ray transient SAX J1810.8-2609 on March 24, 1998 and detected a bright X-ray source (named RX J1810.7-2609) which was not detected during the ROSAT all-sky survey in September 1990. Optical-to-infrared follow-up observations of the 10 arcsec radius ROSAT HRI X-ray error box revealed one variable object (R = 19.5+/-0.5 on 13 March, R>21.5 on 27 Aug 1998) which we tentatively propose as the optical/IR counterpart of RX J1810.7-2609 = SAX J1810.8-2609.

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