Tag Archive for 'SN 2017egm'

The superluminous supernova SN 2017egm was discovered by ESA’s Gaia mission on May 23, 2017; it exploded in a massive barred spiral galaxy known as NGC 3191, shown on the left before the eruption; the image at right, taken on July 1, 2017, shows the supernova outshining the entire galaxy. Image credit: SDSS / PS1 / NOT+ALFSOC / Bose et al.

Fermi Identifies Hidden Engine behind Superluminous Supernovae

May 20, 2026 by News Staff

New gamma-ray observations from NASA’s Fermi Space Telescope suggest ultra-magnetic neutron stars called magnetars could be fueling superluminous supernovae,...

SDSS DR14 image of the massive spiral galaxy NGC 3191; the cross-hairs mark the position of SN 2017egm. Image credit: SDSS.

SN 2017egm: ‘Heavy Metal’ Superluminous Supernova Discovered in NGC 3191

Aug 1, 2017 by News Staff

At a distance of 420 million light-years, the recently-discovered SN 2017egm is the nearest Type I superluminous supernova to date, and the first near...