Voltar
Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Observations of the First Electromagnetic Counterpart to a Gravitational-wave Source by the TOROS Collaboration

2017; IOP Publishing; Volume: 848; Issue: 2 Linguagem: Inglês

10.3847/2041-8213/aa9060

ISSN

2041-8213

Autores

M. C. Díaz, Lucas M. Macri, D. G. Lambas, C. Mendes de Oliveira, J. L. Nilo Castellón, T. Ribeiro, B. Sánchez, W. Schoenell, L. Raul Abramo, S. Akras, J. S. Alcaniz, R. Artola, M. Beroiz, Silvia Bonoli, Juan Cabral, Richard Camuccio, M. Castillo, V. Chavushyan, P. Coelho, C. Colazo, M. V. Costa-Duarte, H. L., D. L. DePoy, M. Domínguez, D. Dultzin, Daniela Fernández, Javier A. García, C. Girardini, D. R. Gonçalves, Thiago S. Gonçalves, S. Gurovich, Y. Jiménez-Teja, A. Kanaan, M. Lares, R. Lopes de Oliveira, Omar Lopez‐Cruz, J. L. Marshall, R. Melia, A. Molino, Nelson Padilla, T. Peñuela, Vinicius M. Placco, C. Quiñones, A. Ramírez Rivera, Víctor Renzi, L. Riguccini, Emmanuel Ríos-López, Horacio A. Rodríguez, L. Sampedro, M. Schneiter, L. Sodré, M. Starck, S. Torres-Flores, M. Tornatore, Adam Zadrożny,

Tópico(s)

Geophysics and Sensor Technology

Resumo

We present the results of prompt optical follow-up of the electromagnetic counterpart of the gravitational-wave event GW170817 by the Transient Optical Robotic Observatory of the South Collaboration (TOROS). We detected highly significant dimming in the light curves of the counterpart (Delta g=0.17+-0.03 mag, Delta r=0.14+-0.02 mag, Delta i=0.10 +- 0.03 mag) over the course of only 80 minutes of observations obtained ~35 hr after the trigger with the T80-South telescope. A second epoch of observations, obtained ~59 hr after the event with the EABA 1.5m telescope, confirms the fast fading nature of the transient. The observed colors of the counterpart suggest that this event was a "blue kilonova" relatively free of lanthanides.

Referência(s)