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Photometric Observations of Supernova 2013cq Associated with GRB 130427A

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arxiv 1702.04762 v1 pith:QNXIPQ6K submitted 2017-02-15 astro-ph.HE

R. L. Becerra , A. M. Watson , W. H. Lee , N. Fraija , N. R. Butler , J. S. Bloom , J. I. Capone , A. Cucchiara
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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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keywords supernovaafterglowassociatedphotometricabsoluteartirastronbehavior
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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 Astron\'omico Nacional on Sierra San Pedro M\'artir. 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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Cited by 1 Pith paper

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  1. Search for very-high-energy photons from Gamma-ray bursts with HAWC

    astro-ph.HE 2019-08 conditional novelty 4.0 of 10

    No statistically significant very-high-energy emission was seen from four GRBs in HAWC's field of view, and new flux upper limits were set for each.

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