Late Central-engine Activity in GRB 180205A

R. L. Becerra; A. M. Watson; N. Fraija; Nathaniel Butler; W. H. Lee; E. Troja; C. G. Román-Zñiga; A. S. Kutyrev; L. C. Álvarez Nuñez; F. Ángeles; O. Chapa; S. Cuevas; A. S. Farah; J. Fuentes-Fernández; L. Figueroa; R. Langarica; F. Quirós; J. Ruíz-Díaz-Soto; C. G. Tejada; S. J. Tinoco

doi:10.3847/1538-4357/ab0026

Late Central-engine Activity in GRB 180205A

R. L. Becerra, A. M. Watson, N. Fraija, Nathaniel Butler, W. H. Lee, E. Troja, C. G. Román-Zñiga, A. S. Kutyrev, L. C. Álvarez Nuñez, F. Ángeles, O. Chapa, S. Cuevas, A. S. Farah, J. Fuentes-Fernández, L. Figueroa, R. Langarica, F. Quirós, J. Ruíz-Díaz-Soto, C. G. Tejada, S. J. Tinoco

Earth and Space Exploration, School of (SESE)

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

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.

Original language	English (US)
Article number	118
Journal	Astrophysical Journal
Volume	872
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ab0026
State	Published - 2019

Keywords

gamma-ray burst: individual (GRB 180205A)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/ab0026

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Becerra, R. L., Watson, A. M., Fraija, N., Butler, N., Lee, W. H., Troja, E., Román-Zñiga, C. G., Kutyrev, A. S., Álvarez Nuñez, L. C., Ángeles, F., Chapa, O., Cuevas, S., Farah, A. S., Fuentes-Fernández, J., Figueroa, L., Langarica, R., Quirós, F., Ruíz-Díaz-Soto, J., Tejada, C. G., & Tinoco, S. J. (2019). Late Central-engine Activity in GRB 180205A. Astrophysical Journal, 872(2), Article 118. https://doi.org/10.3847/1538-4357/ab0026

Becerra, RL, Watson, AM, Fraija, N, Butler, N, Lee, WH, Troja, E, Román-Zñiga, CG, Kutyrev, AS, Álvarez Nuñez, LC, Ángeles, F, Chapa, O, Cuevas, S, Farah, AS, Fuentes-Fernández, J, Figueroa, L, Langarica, R, Quirós, F, Ruíz-Díaz-Soto, J, Tejada, CG & Tinoco, SJ 2019, 'Late Central-engine Activity in GRB 180205A', Astrophysical Journal, vol. 872, no. 2, 118. https://doi.org/10.3847/1538-4357/ab0026

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title = "Late Central-engine Activity in GRB 180205A",

abstract = "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.",

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author = "Becerra, {R. L.} and Watson, {A. M.} and N. Fraija and Nathaniel Butler and Lee, {W. H.} and E. Troja and Rom{\'a}n-Z{\~n}iga, {C. G.} and Kutyrev, {A. S.} and {{\'A}lvarez Nu{\~n}ez}, {L. C.} and F. {\'A}ngeles and O. Chapa and S. Cuevas and Farah, {A. S.} and J. Fuentes-Fern{\'a}ndez and L. Figueroa and R. Langarica and F. Quir{\'o}s and J. Ru{\'i}z-D{\'i}az-Soto and Tejada, {C. G.} and Tinoco, {S. J.}",

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doi = "10.3847/1538-4357/ab0026",

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AU - Becerra, R. L.

AU - Watson, A. M.

AU - Fraija, N.

AU - Butler, Nathaniel

AU - Lee, W. H.

AU - Troja, E.

AU - Román-Zñiga, C. G.

AU - Kutyrev, A. S.

AU - Álvarez Nuñez, L. C.

AU - Ángeles, F.

AU - Chapa, O.

AU - Cuevas, S.

AU - Farah, A. S.

AU - Fuentes-Fernández, J.

AU - Figueroa, L.

AU - Langarica, R.

AU - Quirós, F.

AU - Ruíz-Díaz-Soto, J.

AU - Tejada, C. G.

AU - Tinoco, S. J.

PY - 2019

Y1 - 2019

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AB - 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.

KW - gamma-ray burst: individual (GRB 180205A)

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JO - Astrophysical Journal

JF - Astrophysical Journal

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M1 - 118

ER -

Late Central-engine Activity in GRB 180205A

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Keywords

ASJC Scopus subject areas

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Optical obs. of GRB 180205A with COATLI

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Late Central-engine Activity in GRB 180205A

Abstract

Keywords

ASJC Scopus subject areas

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Optical obs. of GRB 180205A with COATLI

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