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14th of January 2015
2014 Science Highlights
Spectral and Morphological Analysis of the Remnant of Supernova 1987A with ALMA and ATCA
Zanardo et al. (2014) present a comprehensive spectral and morphological analysis of the remnant of supernova (SN) 1987A with the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA). The non-thermal and thermal components of the emission from 94 to 672 GHz are separated with the assistance of a synchrotron template from the ATCA high-resolution observations at 44 GHz, and a dust template from ALMA observations at 672 GHz. The synchrotron / dust-subtracted images and the spectral energy distribution indicate additional emission beside the main synchrotron component (alpha = -0.73) and the thermal component originating from dust grains at T~22 K. Results from both the morphological and spectral analysis suggest the presence of a pulsar wind nebula in the remnant interior, powered by a pulsar likely located at a westward offset from the SN position.

ATNF Science Highlights from refereed publications during 2014.

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