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Stripped-envelope supernova light curves argue for central engine activity

The luminosity of stripped-envelope supernovae, a common type of stellar explosion, is believed to be mainly driven by the radioactive decay of the nickel synthesized in the explosion and carried in its ejecta. Additional possible energy sources have been previously suggested1–5, in which the two most observationally based results have been from a comparison of the observed time-weighted luminosity with the inferred radioactive power1 and from a comparison of the light curves with particular theoretical models3. However, the former result1 was not statistically significant, and the latter3 is highly dependent on the specific models assumed. Here we analyse the energy budget of a sample of 54 well-observed stripped-envelope supernovae of all sub-types and present statistically significant, largely model-independent, observational evidence for a non-radioactive power source in most of them (and possibly in all). We consider various energy sources, or alternatively, plausible system ....

Van Dyk , Zwicky Transient Facility Bright , Sloan Digital Sky , Properties Of The Progenitor Stars , Lick Observatory Supernova Search , Sloan Digital Sky Survey , K Sample Anderson , Systematic Study , Mid Infrared Emission , Core Collapse Supernovae , Carnegie Supernova Project , Stellar Astrophysics ,

NASA Hubble Space Telescope Snaps Stunning View of Supernova Remnant Looming in Isolation

The NASA/ESA Hubble Space Telescope has captured a breathtaking image of IC 1776, a barred spiral galaxy believed to have recently experienced a supernova. ....

Jace Dela Cruz , Tech Times , Space Telescope , Swirling Supernova Site , Lick Observatory Supernova Search , Hubble Space Telescope , Space Telescope Captures Splendid Isolation , Webb Space Telescope , Large Magellanic Cloud , Near Infrared Camera , Asa Hubble Space Galaxy , Spiral Galaxy ,

Hubble images galaxy IC 1776

Hubble images galaxy IC 1776
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Hubble Views Galaxy IC 1776

Hubble Views Galaxy IC 1776
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NASA's Hubble Space Telescope Captures Swirling Supernova Site

NASA's Hubble Space Telescope Captures Swirling Supernova Site
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