We present optical photometry of the afterglow of the long GRB 180205A with the COATLI telescope from 217 s to about 5 days after the Swift/BAT trigger. We analyze this photometry in conjunction with the X-ray light curve from Swift/XRT. The late-time light curves and spectra are consistent with the standard forward-shock scenario. However, the early-time optical and X-ray light curves show atypical behavior; the optical light curve exhibits a flat plateau while the X-ray light curve shows a flare. We explore several scenarios and conclude that the most likely explanation for the early behavior is late activity of the central engine.
- gamma-ray burst: individual (GRB 180205A)
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
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Becerra, R. L. (Creator), Watson, A. M. (Creator), Fraija, N. (Creator), Butler, N. (Creator), Lee, W. H. (Creator), Troja, E. (Creator), Román-Zñiga, C. G. (Contributor), Kutyrev, A. S. (Creator), Álvarez Nuñez, N. L. C. (Contributor), Ángeles, F. (Contributor), Chapa, O. (Creator), Cuevas, S. (Creator), Farah, A. S. (Creator), Fuentes-Fernández, J. (Contributor), Figueroa, L. (Creator), Langarica, R. (Creator), Quirós, F. (Contributor), Ruíz-Díaz-Soto, J. (Contributor), Tejada, C. G. (Creator) & Tinoco, S. J. (Creator), Strasbourg Astronomical Data Center, 2019