supernova — LLMpedia

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supernova

A supernova is a transient, highly luminous stellar explosion marking the sudden death of a star or the catastrophic disruption of a compact stellar system. It manifests as a rapid rise and decline in electromagnetic emission observable across optical, ultraviolet, X-ray, and radio bands and is studied by observatories, survey projects, and missions such as Hubble Space Telescope, Chandra X-ray Observatory, Very Large Array, Sloan Digital Sky Survey and Gaia (spacecraft). Supernovae provide critical constraints on models developed by collaborations at institutions like CERN, Max Planck Society, California Institute of Technology, Harvard University, and Princeton University.

Overview

Astronomical records of bright stellar explosions appear in chronicles associated with Babylonian astronomy, Song dynasty, Tycho Brahe, Johannes Kepler, Ming dynasty and modern surveys like Pan-STARRS; prominent historical events include observations by Chinese astronomers, Arabic astronomers, European astronomers and compilations by Edmond Halley. Professional follow-up uses facilities including Keck Observatory, Very Large Telescope, Atacama Large Millimeter Array and satellite fleets coordinated by agencies such as NASA, European Space Agency and JAXA. Cataloging efforts integrate outputs from projects like International Astronomical Union transient alerts, Transient Name Server listings, and legacy databases curated by Smithsonian Astrophysical Observatory.

Taxonomies hinge on spectroscopic features and light-curve behavior established by teams at institutions such as Mount Wilson Observatory, Palomar Observatory, Carnegie Institution for Science and observational programs like Supernova Cosmology Project and High-Z Supernova Search Team. Major classes include thermonuclear events historically associated with work by Wheeler (astrophysicist), and core-collapse events examined in studies from University of Chicago, University of California, Berkeley and Los Alamos National Laboratory. Subtypes such as Ia, Ib, Ic, II-P, II-L, IIn arise from spectral lines and hydrogen signatures identified in spectrographs at European Southern Observatory and Gemini Observatory. Peculiar or interacting types (e.g., superluminous supernovae) are subjects of investigation by teams at Max Planck Institute for Astrophysics, University of Tokyo and University of Cambridge.

Progenitor identification draws on archival imaging from Hubble Space Telescope and modeling from groups at Institute for Advanced Study, Princeton University, Stanford University and University of Oxford. Thermonuclear progenitors trace to degenerate stars in binary systems involving Sirius-like binaries or compact remnants such as white dwarfs in contexts studied by Kavli Institute for Cosmological Physics and surveys like Palomar Transient Factory. Core-collapse progenitors derive from massive stars observed in programs at European Southern Observatory and cataloged in surveys by Canada–France–Hawaii Telescope; frameworks for collapse, neutrino transport and explosion asymmetry are developed by researchers at Los Alamos National Laboratory, Lawrence Livermore National Laboratory and Max Planck Institute for Astrophysics. Models incorporate physics from collaborations using computing centers such as National Energy Research Scientific Computing Center.

Photometry and spectroscopy employ instruments at Subaru Telescope, Magellan Telescopes, Large Binocular Telescope and space missions like Swift (spacecraft), enabling characterization of rise times, peak magnitudes, decline rates and color evolution. Light-curve templates used by teams at Carnegie Observatories and University of California, Santa Cruz underpin distance estimations performed by groups in the Supernova Cosmology Project and at Lawrence Berkeley National Laboratory. Multiwavelength monitoring—radio by Very Large Array, X-ray by Chandra X-ray Observatory, gamma-ray by Fermi Gamma-ray Space Telescope—reveals circumstellar interaction, relativistic jets linked to events studied by California Institute of Technology and NASA Goddard Space Flight Center, and late-time nebular spectra analyzed by researchers at Max Planck Institute for Extraterrestrial Physics.

Nucleosynthetic yields inferred from spectra and meteoritic inclusions are central to chemical-evolution models developed by teams at Carnegie Institution for Science, Harvard–Smithsonian Center for Astrophysics and University of California, Santa Cruz. Isotopes such as iron-group and r-process nuclei are tied to mechanisms proposed by groups at Oak Ridge National Laboratory and Lawrence Livermore National Laboratory. Remnants—young objects like those cataloged in studies by Chandra X-ray Observatory and Hubble Space Telescope—include neutron stars and black holes whose discovery is linked to observatories such as Arecibo Observatory (historical), Green Bank Telescope and gravitational-wave detections by LIGO Scientific Collaboration and Virgo (gravitational-wave detector). Supernova remnants cataloged by institutions like Smithsonian Astrophysical Observatory shape understanding of interstellar medium enrichment in galaxies studied by Sloan Digital Sky Survey.

Rate estimates derive from volumetric surveys conducted by Sloan Digital Sky Survey, Zwicky Transient Facility, Pan-STARRS, and space missions analyzed at NASA Ames Research Center and European Southern Observatory. Host-galaxy correlations—between event type and properties of hosts like Andromeda Galaxy, Milky Way, Large Magellanic Cloud and Small Magellanic Cloud—are investigated by groups at University of Tokyo and University of Cambridge. Type Ia events serve as distance indicators underpinning measurements by teams behind Supernova Cosmology Project and High-Z Supernova Search Team that contributed to the discovery associated with Nobel Prize in Physics awardees and the inference of dark energy—a topic pursued by collaborations including Dark Energy Survey and Euclid (spacecraft). Ongoing surveys and multi-messenger networks coordinated by institutions such as International Astronomical Union and Global Relay of Observatories Watching Transients Happen refine rate measurements and cosmological constraints.

Category:Stellar explosions