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DDOTI Observations of Gravitational-Wave Sources Discovered in O3
R. L. Becerra, S. Dichiara, A. M. Watson +8
We present optical follow-up observations with the DDOTI telescope of gravitational-wave events detected during the Advanced LIGO and Advanced Virgo O3 observing run. DDOTI is capa…
A search for optical and near-infrared counterparts of the compact binary merger GW190814
A. L. Thakur, S. Dichiara, E. Troja +29
We report on our observing campaign of the compact binary merger GW190814, detected by the Advanced LIGO and Advanced Virgo detectors on August 14th, 2019. This signal has the best…
GRB 180620A: Evidence for late-time energy injection
Rosa L. Becerra, Fabio De Colle, Alan M. Watson +11
The early optical emission of gamma-ray bursts gives an opportunity to understand the central engine and first stages of these events. About 30\% of GRBs present flares whose origi…
A multi-wavelength analysis of a collection of short-duration GRBs observed between 2012-2015
S. B. Pandey, Y. Hu, A. J. Castro-Tirado +71
We investigate the prompt emission and the afterglow properties of short duration gamma-ray burst (sGRB) 130603B and another eight sGRB events during 2012-2015, observed by several…
Late Central Engine Activity in GRB 180205A
R. L. Becerra, A. M. Watson, N. Fraija +16
We present optical photometry of the afterglow of the long GRB 180205A with the COATLI telescope from 217 seconds to about 5 days after the {\itshape Swift}/BAT trigger. We analyse…
Evidence for a Bright-Edged Jet in the Optical/NIR Afterglow of GRB 160625B
Robert Strausbaugh, Nathaniel Butler, William H. Lee +2
Using deep and high-cadence gamma-ray burst (GRB) afterglow data from RATIR, we observe a sharp and achromatic light curve break 12.6 days after the GRB, accompanied by an approxim…