The Early Optical Afterglow of GRB 030418 and Progenitor Mass Loss
Rykoff, E S; Smith, D A; Price, Paul Antony; Akerlof, C W; Ashley, Michael; Bizyaev, D; Garradd, G; McKay, T A; McNaught, Rob; Phillips, A; Quimby, R; Schaefer, Bruce F; Schmidt, Brian; Vestrand, W T; Wheeler, J Craig; Wren, J
The ROTSE-IIIa telescope and the SSO 40 inch (1.0 m) telescope, both located at Siding Spring Observatory, imaged the early-time afterglow of GRB 030418. In this report, we present observations of the early afterglow, first detected by the ROTSE-IIIa telescope 211 s after the start of the burst and only 76 s after the end of the gamma-ray activity. We detect optical emission that rises for ∼600 s, slowly varies around R = 17.3 mag for ∼1400 s, and then fades as a power law of index α = -1.36....[Show more]
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|Source:||Astrophysical Journal, The|
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