The supernova remmnant RCW 86 and its environment

DUVIDOVICH, L.; DUBNER, G.; GIACANI, E.; CARAGIULO, M.; CONDON, B.; HEWITT, J. W.; GIORDANO, F.; LEMOINE-GOUMARD, M.; REYNOSO, E.

La Plata

Congreso; 58 Reunión Anual de la Asocación Argentina de Astronomía; 2015

RCW 86 (G315.4-2.3) is one of the brightest Galactic supernova remnants in X-rays and has been suggested to be the remnant of the supernova 185 (SN 185). It has a shell-like morphology across almost the entire electromagnetic spectrum (radio, optical, infrared, X-rays and gamma-rays). Detailed hydrodynamic simulations show that the overall dynamics and emission properties in different positions of this remnant can be well reproduced by assuming that it is the remnant of a Type Ia SN that exploded within an elongated cavity. This paper presents preliminary results of the neutral gas study conducted around RCW 86 using 21 cm interferometric observations made with the ATCA (Australia) to explore the gaseous environment of this source.