Observations of the First Electromagnetic Counterpart to a Gravitational-wave Source by the TOROS Collaboration
Por:
Diaz, M. C., Macri, L. M., Garcia Lambas, D., Mendes de Oliveira, C., Nilo Castellon, J. L., Ribeiro, T., Sanchez, B., Schoenell, W., Abramo, L. R., Akras, S., Alcaniz, J. S., Artola, R., Beroiz, M., Bonoli, S., Cabral, J., Camuccio, R., Castillo, M., Chavushyan, V., Coelho, P., Colazo, C., Costa-Duarte, M. V., Cuevas Larenas, H., Depoy, D. L., Dominguez Romero, M., Dultzin, D., Fernandez, D., Garcia, J., Girardini, C., Goncalves, D. R., Goncalves, T. S., Gurovich, S., Jimenez-Teja, Y., Kanaan, A., Lares, M., Lopes de Oliveira, R., Lopez-Cruz, O., Marshall, J. L., Melia, R., Molino, A., Padilla, N., Penuela, T., Placco, V. M., Quinones, C., Ramirez Rivera, A., Renzi, V., Riguccini, L., Rios-Lopez, E., Rodriguez, H., Sampedro, L., Schneiter, M., Sodre, L., Starck, M., Torres-Flores, S., Tornatore, M., Zadrozny, A.
Publicada:
20 oct 2017
Resumen:
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. 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 similar to 35 hr after the trigger with the T80-
South telescope. A second epoch of observations, obtained similar to 59
hr after the event with the EABA 1.5 m 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.
Filiaciones:
Diaz, M. C.:
Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
Univ Texas Rio Grande Valley, Dept Phys & Astron, Brownsville, TX USA
Macri, L. M.:
Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, Dept Phys & Astron, College Stn, TX USA
Garcia Lambas, D.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Mendes de Oliveira, C.:
U Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP, Brazil
Nilo Castellon, J. L.:
Univ La Serena, Inst Invest Multidisciplinario Ciencia & Tecnol, La Serena, Chile
Univ La Serena, Dept Fis & Astron, La Serena, Chile
Ribeiro, T.:
Univ Fed Sergipe, Dept Fis, Sao Cristovao, SE, Brazil
Sanchez, B.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Schoenell, W.:
U Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP, Brazil
Univ Fed Santa Catarina, Dept Fis, Florianopolis, SC, Brazil
Abramo, L. R.:
Univ Sao Paulo, Inst Fis, Dept Fis Matemat, Sao Paulo, SP, Brazil
Akras, S.:
Observ Nacl, Dept Astron, Rio De Janeiro, RJ, Brazil
Alcaniz, J. S.:
Observ Nacl, Dept Astron, Rio De Janeiro, RJ, Brazil
Artola, R.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Beroiz, M.:
Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
Univ Texas Rio Grande Valley, Dept Phys & Astron, Brownsville, TX USA
Bonoli, S.:
Ctr Estudios Fis Cosmos Aragon, Teruel, Spain
Cabral, J.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Camuccio, R.:
Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
Univ Texas Rio Grande Valley, Dept Phys & Astron, Brownsville, TX USA
Castillo, M.:
Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
Univ Texas Rio Grande Valley, Dept Phys & Astron, Brownsville, TX USA
Chavushyan, V.:
Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
Coelho, P.:
U Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP, Brazil
Colazo, C.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Costa-Duarte, M. V.:
U Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP, Brazil
Cuevas Larenas, H.:
Univ La Serena, Dept Fis & Astron, La Serena, Chile
Depoy, D. L.:
Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, Dept Phys & Astron, College Stn, TX USA
Dominguez Romero, M.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Dultzin, D.:
Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
Fernandez, D.:
Pontificia Univ Catolica Chile, Inst Astrofis, Santiago, Chile
Garcia, J.:
Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
Univ Texas Rio Grande Valley, Dept Phys & Astron, Brownsville, TX USA
Girardini, C.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Goncalves, D. R.:
Univ Fed Rio de Janeiro, Observ Valongo, Rio De Janeiro, RJ, Brazil
Goncalves, T. S.:
Univ Fed Rio de Janeiro, Observ Valongo, Rio De Janeiro, RJ, Brazil
Gurovich, S.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Jimenez-Teja, Y.:
Observ Nacl, Dept Astron, Rio De Janeiro, RJ, Brazil
Kanaan, A.:
Univ Fed Santa Catarina, Dept Fis, Florianopolis, SC, Brazil
Lares, M.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Lopes de Oliveira, R.:
Univ Fed Sergipe, Dept Fis, Sao Cristovao, SE, Brazil
NASA, Goddard Space Flight Ctr, Xray Astrophys Lab, Greenbelt, MD USA
NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD USA
Lopez-Cruz, O.:
Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
Marshall, J. L.:
Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, Dept Phys & Astron, College Stn, TX USA
Melia, R.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Molino, A.:
U Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP, Brazil
Padilla, N.:
Pontificia Univ Catolica Chile, Inst Astrofis, Santiago, Chile
Penuela, T.:
Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
Univ Texas Rio Grande Valley, Dept Phys & Astron, Brownsville, TX USA
Ludwig Maximilian Univ Munich, Fac Phys, Munich, Germany
Placco, V. M.:
Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
Ctr Evolut Elements, Joint Inst Nucl Astrophys, E Lansing, MI USA
Quinones, C.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Ramirez Rivera, A.:
Univ La Serena, Dept Fis & Astron, La Serena, Chile
Renzi, V.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Riguccini, L.:
Univ Fed Rio de Janeiro, Observ Valongo, Rio De Janeiro, RJ, Brazil
Rios-Lopez, E.:
Inst Nacl Astrofis Opt & Electr, Puebla, Mexico
Rodriguez, H.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Sampedro, L.:
U Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP, Brazil
Schneiter, M.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Sodre, L.:
U Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP, Brazil
Starck, M.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Torres-Flores, S.:
Univ La Serena, Dept Fis & Astron, La Serena, Chile
Tornatore, M.:
Univ Nacl Cordoba, IATE OAC, CONICET, Cordoba, Argentina
Zadrozny, A.:
Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
Univ Texas Rio Grande Valley, Dept Phys & Astron, Brownsville, TX USA
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