Paseo del Bosque

Nov 14, 2024 | academic.oup.com | Paseo del Bosque |Departamento de Física |Universidad de Jaén

We present the results of the optical monitoring of 18 southern blazars in the V and R Johnson-Cousins bands. Our main objective is to study the variations in the optical flux and their relationship with the colour and spectral variabilities. The optical observations were acquired with the 2.15 m ‘Jorge Sahade’ telescope, CASLEO, Argentina. The whole campaign comprised from 2014 April to 2019 September.

Sep 17, 2024 | academic.oup.com | Facultad de Matemática |Física y Computación |Ciudad Universitaria |Paseo del Bosque

Three different observational campaigns aimed at the galaxy centre have confirmed that Sgr A* must be a supermassive compact object of roughly ⁠. Two independent campaigns met this conclusion through the study of stellar motions around Sgr A* (Ghez et al. 2005, 2008; Genzel, Eisenhauer & Gillessen 2010; GRAVITY Collaboration 2018, 2020; Do et al. 2019).