The remnant of supernova 1987A resolved at 3-mm wavelength

Abstract

Context. The proximity of core-collapse supernova 1987A (SN 1987A) in the Large Magellanic Cloud (LMC) and its rapid evolution make it a unique case study of the development of a young supernova remnant. Aims. We aim at resolving the remnant of SN 1987A for the first time in the 3-mm band (at 94 GHz). Methods. We observed the source at 3-mm wavelength with a 750-m configuration of the Australia Telescope Compact Array (ATCA). We compared the image with a recent 3-cm image and with archival X-ray images.