Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract
We report on multi-epoch Chandra and optical observations of the faint, bursting (Chelovekov & Grebenev 2007, Atel #1094) neutron star transient AX J1754.2-2754. The source has been detected every time since 1999 (Sakano et al. 1999) when an X-ray satellite observed the source. However, we do not detect the source in Chandra Galactic Bulge Survey observations obtained in May 2008. The Galactic Bulge Survey is an optical and X-ray survey of two strips each 6 by 1 degrees centered 1.5 degrees above and below the Galactic plane towards the Galactic center.