Synoptic searches for the optical counterpart to a binary neutron star (BNS) or neutron star-black hole (NSBH) merger can pose significant challenges towards the discovery of kilonovae and performing multi-messenger science. In this work, we describe the advantage of a global multi-telescope network towards this end, with a particular focus on the key and complementary role the Dark Energy Camera (DECam) plays in multi-facility follow-up. We describe the Global Relay of Observatories Watching Transients Happen (GROWTH) Target-of-Opportunity (ToO) Marshal, a common web application we built to ingest events, plan observations, search for transient candidates, and retrieve performance summary statistics for all of the telescopes in our network. Our infrastructure enabled us to conduct observations of two events during O3a, S190426c and S190510g. Furthermore, our analysis of deep DECam observations of S190814bv conducted by the DESGW team, and access to a variety of global follow-up facilities allowed us to place meaningful constraints on the parameters of the kilonova and the merging binary. We emphasize the importance of a global telescope network in conjunction with a power telescope like DECam in performing searches for the counterparts to gravitational-wave sources. © 2021: Instituto de Astronomía, Universidad Nacional Autónoma de México.

DECam-GROWTH search for the faint and distant binary neutron star and neutron star-black hole mergers in O3a

Bulla M.;
2019

Abstract

Synoptic searches for the optical counterpart to a binary neutron star (BNS) or neutron star-black hole (NSBH) merger can pose significant challenges towards the discovery of kilonovae and performing multi-messenger science. In this work, we describe the advantage of a global multi-telescope network towards this end, with a particular focus on the key and complementary role the Dark Energy Camera (DECam) plays in multi-facility follow-up. We describe the Global Relay of Observatories Watching Transients Happen (GROWTH) Target-of-Opportunity (ToO) Marshal, a common web application we built to ingest events, plan observations, search for transient candidates, and retrieve performance summary statistics for all of the telescopes in our network. Our infrastructure enabled us to conduct observations of two events during O3a, S190426c and S190510g. Furthermore, our analysis of deep DECam observations of S190814bv conducted by the DESGW team, and access to a variety of global follow-up facilities allowed us to place meaningful constraints on the parameters of the kilonova and the merging binary. We emphasize the importance of a global telescope network in conjunction with a power telescope like DECam in performing searches for the counterparts to gravitational-wave sources. © 2021: Instituto de Astronomía, Universidad Nacional Autónoma de México.
2019
Las b´usquedas sin´opticas de contrapartidas ´opticas resultantes de la fusi´on de un sistema binario compuesto por dos estrellas de neutrones (BNS) o un agujero negro y una estrella de neutrones (NSBH) puede resultar en resultados muy significativos en relaci´on al descubrimiento de kilonovas en el contexto de la Astronom´ıa de multimensajeros. En este trabajo, describimos la ventaja de una red global de telescopios para este fin, haciendo ´enfasis en el instrumento DECam (C´amara para la Energ´ıa Oscura) en este contexto. Describimos la aplicaci´on web Marshal para la observaci´on en modo de oportunidad de los fen´omenos transitorios que se suceden (GROWTH) como una aplicaci´on web com´un dise˜nada para aceptar eventos, planificar observaciones, buscar candidatos transitorios y realizar un sumario de todas las observaciones realizadas para cada evento. Nuestra infraestructura nos permiti´o realizar observaciones de dos alertas de ondas gravitacionales acontecidas durante el periodo O3a: S190426c y S190510g. Del an´alisis de las observaciones profundas realizadas con DECam de S190814bv conducido por el equipo de DESGW, en conjunci´on con el acceso a una variedad de instalaciones de astron´omicas, se pusieron restricciones significativas en los par´ametros de la kilonova y el sistema binario que hubiera dado lugar a ella. Destacamos la importancia de una red global de telescopios en conjunto con un potente sistema como DECam en el desempe˜no de la b´usqueda de las contrapartidas de las fuentes de ondas gravitacionales.
Gravitational waves; Methods: Data analysis; Stars: Neutron; Surveys; Telescopes
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2495054
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