On the Afterglow of the X‐Ray Flash of 2003 July 23: Photometric Evidence for an Off‐Axis Gamma‐Ray Burst with an Associated Supernova?

P. U. Fynbo, J.; Sollerman, J.; Hjorth, J.; Grundahl, F.; Gorosabel, J.; Weidinger, M.; Møller, P.; L. Jensen, B.; M. Vreeswijk, P.; Fransson, Claes; Ramírez-Ruiz, E.; Jakobsson, P.; F. Jørgensen, S.; Vinter, C.; I. Andersen, M.; M. Castro Cerón, J.; J. Castro‐Tirado, A.; S. Fruchter, A.; Greiner, J.; Kouveliotou, C.; J. Levan, A.; Klose, S.; Masetti, N.; Pedersen, H.; Palazzi, E.; Pian, E.; E. Rhoads, James; Rol, E.; Sekiguchi, Tomohiko; R. Tanvir, N.; J. Tristram, P.; de Ugarte Postigo, A.; A. M. J. Wijers, R.; van den Heuvel, Edward

doi:10.1086/421260

Public

On the Afterglow of the X‐Ray Flash of 2003 July 23: Photometric Evidence for an Off‐Axis Gamma‐Ray Burst with an Associated Supernova?

Published in The Astrophysical Journal • Jul 9, 2004

Authors:

J. P. U. Fynbo

J. Sollerman

J. Hjorth

Abstract

We present optical and near-infrared follow-up observations of the X-ray flash (XRF) of 2003 July 23. Our observations in the R band cover the temporal range from 4.2 hr to 64 days after the high-energy event. We also present the results of multicolor imaging extending to the K band on three epochs....

Subject

Afterglow

Light curve

Astrophysics

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