(SLSN, Hypernova, Superluminous SN)
(stellar explosion larger than a supernova)
A Superluminous Supernova (SLSN or Superluminous SN or Hypernova)
is a stellar explosion more energetic than a normal Supernova,
i.e., they can be classified as very large Supernovae.
Most are Type Ic or Type IIn supernovae, termed
Type I SLSN (or SLSN-I), Type II SLSN (or SLSN-II),
They are theorized to be Core Collapse Supernovae,
but some don't fit that pattern.
They are also thought to be the origin of long-duration Gamma-Ray Bursts (LGRBs).
A third type called SLSN-R (for "Radioactive") apparently
with Electromagnetic Radiation produced by a radioactive Nickel Isotope.
Among theories explaining their mechanisms:
- Collapsar - core collapse of a rapidly rotating star of suitable mass. (The term hypernova sometimes is meant specifically for this type.)
- Circumstellar Material (CSM) - brightness from the collision between expelled material from the exploding star and material around it.
- Pair-instability - (Pair-Instability Supernova, PISN) if the internal Kinetic Energy is sufficiently high (i.e., Temperature), Pair Production may be the result (creation of a Particle and its anti-particle by an energetic Photon's near-miss with an atom).
- Magnetar - can have additional energy for release.
(stars,event type,transient type)
Fast Radio Burst (FRB)
Gamma-Ray Burst (GRB)