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arXiv · 1702.04762

Photometric Observations of Supernova 2013cq Associated with GRB 130427A

R. L. Becerra·A. M. Watson·W. H. Lee·N. Fraija·N. R. Butler·J. S. Bloom·J. I. Capone·A. Cucchiara·J. A. de Diego·O. D. Fox·N. Gehrels·L. N. Georgiev·J. J. González·A. S. Kutyrev·O. M. Littlejohns·J. X. Prochaska·E. Ramirez-Ruiz·M. G. Richer·C. G. Román-Zúñiga·V. L. Toy·E. Troja
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Abstract

We observed the afterglow of GRB 130427A with the RATIR instrument on the 1.5-m Harold L. Johnson telescope of the Observatorio Astronómico Nacional on Sierra San Pedro Mártir. Our homogenous $griZYJH$ photometry extends from the night of burst to three years later. We fit a model for the afterglow. There is a significant positive residual which matches the behavior of SN 1998bw in the $griZ$ filters; we suggest that this is a photometric signature of the supernova SN 2013cq associated with the GRB. The peak absolute magnitude of the supernova is $M_r=-18.43\pm0.11$.

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R. L. Becerra, A. M. Watson, W. H. Lee, N. Fraija, N. R. Butler, J. S. Bloom, J. I. Capone, A. Cucchiara, J. A. de Diego, O. D. Fox, N. Gehrels, L. N. Georgiev, J. J. González, A. S. Kutyrev, O. M. Littlejohns, J. X. Prochaska, E. Ramirez-Ruiz, M. G. Richer, C. G. Román-Zúñiga, V. L. Toy, E. Troja. 2017-02-15. Photometric Observations of Supernova 2013cq Associated with GRB 130427A. https://doi.org/10.3847/1538-4357%2Faa610f

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