A Double Detonation Supernova

Can some supernovas explode twice? Yes, when the principle explosion acts admire a detonator for the second. Right here is a leading hypothesis for the motive of supernova remnant (SNR) 0509-67.5. In this two-neatly-known particular person device, gravity causes the higher and fluffier neatly-known particular person to prevent mass to a smaller and denser white dwarf partner. At closing the white dwarf’s advance-surface temperature goes so excessive that it explodes, establishing a shock wave that goes both out and in — and so triggers a fats Form Ia supernova advance the heart. Most modern photos of the SNR 0509-67.5 device, admire the featured image from the Very Orderly telescope in Chile, point to two shells with radii and compositions per the double detonation hypothesis. This methodology, SNR 0509-67.5 is moreover renowned for 2 standing mysteries: why its luminous supernova wasn’t neatly-known 400 years within the past, and why no visible partner neatly-known particular person remains.