Perspectivas de investigación, innovación y desarrollo. Volumen 2

Perspectivas de Investigación, Innovación y Desarrollo es una compilación de ponencias presentadas en eventos de las diferentes facultades de la Corporación Universitaria Minuto de Dios – UNIMINUTO, seccional Antioquia - Chocó. La edición pasada, publicada en 2019, abordó los avances investigativos expuestos en el 1er Simposio Internacional de Innovación Contable y Financiera NIIF y NIA. Esta entrega compila las ponencias del 1er Simposio del Grupo de Investigación Clínica Psicológica: abordajes y retos de problemas clínicos contemporáneos. Aunque las temáticas divergen, tanto en la publicación pasada como en esta, los textos presentados tienen en común la intención de la institución y los investigadores de presentar a la comunidad académica y a la sociedad, avances investigativos que aporten al desarrollo individual y comunitario

Perspectivas de investigación, innovación y desarrollo. Volumen 2

Perspectivas de Investigación, Innovación y Desarrollo es una compilación de ponencias presentadas en eventos de las diferentes facultades de la Corporación Universitaria Minuto de Dios – UNIMINUTO, seccional Antioquia - Chocó. La edición pasada, publicada en 2019, abordó los avances investigativos expuestos en el 1er Simposio Internacional de Innovación Contable y Financiera NIIF y NIA. Esta entrega compila las ponencias del 1er Simposio del Grupo de Investigación Clínica Psicológica: abordajes y retos de problemas clínicos contemporáneos. Aunque las temáticas divergen, tanto en la publicación pasada como en esta, los textos presentados tienen en común la intención de la institución y los investigadores de presentar a la comunidad académica y a la sociedad, avances investigativos que aporten al desarrollo individual y comunitario

Supplement: "Localization and broadband follow-up of the gravitational-wave transient GW150914" (2016, ApJL, 826, L13)

This Supplement provides supporting material for Abbott et al. (2016a). We briefly summarize past electromagnetic (EM) follow-up efforts as well as the organization and policy of the current EM follow-up program. We compare the four probability sky maps produced for the gravitational-wave transient GW150914, and provide additional details of the EM follow-up observations that were performed in the different bands

Localization and Broadband Follow-up of the Gravitational-wave Transient GW150914

A gravitational-wave (GW) transient was identified in data recorded by the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) detectors on 2015 September 14. The event, initially designated G184098 and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimates of the time, significance, and sky location of the event were shared with 63 teams of observers covering radio, optical, near-infrared, X-ray, and gamma-ray wavelengths with ground- and space-based facilities. In this Letter we describe the low-latency analysis of the GW data and present the sky localization of the first observed compact binary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-ray Coordinates Network circulars, giving an overview of the participating facilities, the GW sky localization coverage, the timeline, and depth of the observations. As this event turned out to be a binary black hole merger, there is little expectation of a detectable electromagnetic (EM) signature. Nevertheless, this first broadband campaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broad capabilities of the transient astronomy community and the observing strategies that have been developed to pursue neutron star binary merger events. Detailed investigations of the EM data and results of the EM follow-up campaign are being disseminated in papers by the individual teams. </p

Multi-messenger Observations of a Binary Neutron Star Merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ∼ 1.7 {{s}} with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of {40}-8+8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 {M}ȯ . An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ∼ 40 {{Mpc}}) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ∼10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ∼ 9 and ∼ 16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC 4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta.</p

Localization and broadband follow-up of the gravitational-wave transient GW150914

A gravitational-wave transient was identified in data recorded by the Advanced LIGO detectors on 2015 September 14. The event candidate, initially designated G184098 and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimates of the time, significance, and sky location of the event were shared with 63 teams of observers covering radio, optical, near-infrared, X-ray, and gamma-ray wavelengths with ground- and space-based facilities. In this Letter we describe the low-latency analysis of the gravitational wave data and present the sky localization of the first observed compact binary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-ray Coordinates Network Circulars, giving an overview of the participating facilities, the gravitational wave sky localization coverage, the timeline and depth of the observations. As this event turned out to be a binary black hole merger, there is little expectation of a detectable electromagnetic signature. Nevertheless, this first broadband campaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broad capabilities of the transient astronomy community and the observing strategies that have been developed to pursue neutron star binary merger events. Detailed investigations of the electromagnetic data and results of the electromagnetic follow-up campaign will be disseminated in the papers of the individual teams

Conductas y escenarios de riesgo en la adolescencia. Voces de adolescentes y sus padres en la ciudad de Medellín

The objetive of this article is to describe the behaviors and risk scenarios that adolescents and their parents tell about their daily experiences. A qualitative research with a hermeneutical phenomenological approach was carried out that made it possible to access the participants' stories through seven semi-structured interviews with adolescents and other seven semi-structured interviews with their parents. The results show reports about the risk around sexuality and the consumption of psychoactive substances in contexts where they interact with people. As a conclusion, it is found that there is a little line between the exploration and the risk practice and the adolescents, subjects with the capacity for conscience, can live experiences as exploration or risk according to the presence and use of the resources they have.Objetivo: describir las conductas y los escenarios de riesgo que adolescentes y sus padres relatan de sus experiencias cotidianas. Metodología: se realizó una investigación cualitativa con enfoque fenomenológico hermenéutico que posibilitó acceder a los relatos de los participantes a través de siete entrevistas semiestructuradas con adolescentes y siete con padres. Los resultados muestran relatos sobre el riesgo en torno a la sexualidad y el consumo de sustancias psicoactivas en escenarios donde se relacionan con otros. Como conclusión se encuentra que hay una delgada línea entre la exploración y la práctica de riesgo y que los adolescentes, sujetos con capacidad de conciencia, pueden vivir las experiencias como una u otra de acuerdo con la presencia y el uso de los recursos con los que cuentan

Significados de la adolescencia en los relatos de una muestra de adolescentes y sus padres en la ciudad de Medellín

Objetivo: Describir los significados de los adolescentes y sus padres, pertenecientes a una muestra seleccionada en la ciudad de Medellín, en torno a la adolescencia. Metodología: Se realizó una investigación cualitativa con enfoque fenomenológico de tipo narrativo. Se realizaron 7 entrevistas con adolescentes y 7 con los padres. Resultados: La adolescencia es vista por los padres y adolescentes desde 4 dimensiones: los cambios, las búsquedas, ser dueño del mundo y la exploración. Conclusión: La adolescencia se concibe por los participantes del estudio como una época de transición, tensiones y retos que favorecen el proceso de individuación

Localization and broadband follow-up of the gravitational-wave transient GW150914

A gravitational-wave (GW) transient was identified in data recorded by the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) detectors on 2015 September 14. The event, initially designated G184098 and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimates of the time, significance, and sky location of the event were shared with 63 teams of observers covering radio, optical, near-infrared, X-ray, and gamma-ray wavelengths with ground- and space-based facilities. In this Letter we describe the low-latency analysis of the GW data and present the sky localization of the first observed compact binary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-ray Coordinates Network circulars, giving an overview of the participating facilities, the GW sky localization coverage, the timeline, and depth of the observations. As this event turned out to be a binary black hole merger, there is little expectation of a detectable electromagnetic (EM) signature. Nevertheless, this first broadband campaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broad capabilities of the transient astronomy community and the observing strategies that have been developed to pursue neutron star binary merger events. Detailed investigations of the EM data and results of the EM follow-up campaign are being disseminated in papers by the individual teams