GCN Circular 2711
GRB040912 (= H3557): Chandra Observations Scheduled G. Ricker, P. Ford, N. Butler, R. Vanderspek (MIT), and D. Lamb (U. Chicago), on behalf of a Chandra GRB ToO Team, write: Chandra target-of-opportunity observations of the entire HETE WXM error circle for GRB040912 (= H3557: Butler et al, GCN 2701) have been approved and scheduled, subject to possible high background radiation constraints. The first epoch observation will commence near 22h UT on 15 September, with a second epoch observation ~1 week later. As noted by Butler et al (GCN 2701), although GRB040912 exhibits the spectral characteristics of an XRF, its temporal characteristics are quite unusual. The scheduling of contemporaneous observations at other wavelengths, especially deep initial and second epoch optical and IR observations, is strongly encouraged. We are grateful to Harvey Tananbaum and Andrea Prestwich for approving this DDT observation.