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Fermi/LAT observations of GRB 110625A

  • P. H.T. Tam (a1), A. K.H. Kong (a1) and Y.-Z. Fan (a2)

Abstract

We report γ-ray afterglow observations of GRB 110625A using Fermi’s Large Area Telescope (LAT) above 100 MeV. Gamma-ray emission was clearly detected using data taken between 180 s and 580 s after the burst. The GeV light curve differs from a power-law decay, and probably consists of two emission periods. Simultaneous Swift/XRT observations did not show flaring behaviors, distinguishing its origin of the extended GeV emission from the case of GRB 100728A.

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[1] Bregeon, J., McEnery, J., & Ohno, M., 2011, GCN Circ., 12218
[2]Evans, P.A., Beardmore, A.P., Page, K.L., et al., 2009, MNRAS, 397, 1177
[3] Littlejohns, J., Evans, P.A., Beardmore, A.P., & Oates, S.R., 2011, GCN Circ., 12224
[4]Tam, P.H.T., Kong, A.K.H., & Fan, Y.-Z., 2012, ApJ, 754, 117
[5]Zhang, B.B., Zhang, B., Liang, E.-W., et al., 2011, ApJ, 730, 141

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