Astrophysics (Index)About

supernova

(SN)
(stellar explosion larger than a nova)

A supernova (SN) is a stellar explosion substantially more energetic than an ordinary nova. It is often briefly brighter than an entire galaxy, and fades away over a period of weeks or months. Energy emitted can be on the order of that of the Sun's entire lifetime. The explosion ejects most of the star's material at up to 10% of the speed of light, sweeping up interstellar gas and dust, which is called a supernova remnant. Classification regarding observable characteristics:

Type I - very little or no hydrogen:

Type II - has hydrogen, broad emission lines:

Type Ia supernovae are thought to consist of a white dwarf's fusion runaway (i.e., a thermonuclear supernova). The others are thought to be the core collapses of various types of large stars (core collapse supernovae).

The absolute brightness of a Type Ia supernova is thought to be determinable from its spectrum and fade time. These factors plus its apparent brightness are used to estimate distance to the supernova and thus to its galaxy and it can serve as a standard candle.

Devising reliable means to determine the absolute brightness of Type II supernova is of research interest. Factors discovered to correlate with the actual luminosity include the velocity of ejecta (determined through the spread of spectral lines associated with the ejecta) and color indices: heuristic use of these produces an absolute magnitude determination of useful accuracy. Some such methods determine the luminosity of a Type II-P supernova's plateau, which serves equally well as determining the peak luminosity.


(stars,event type,transient type)
Further reading:
https://en.wikipedia.org/wiki/Supernova
https://en.wikipedia.org/wiki/Type_Ia_supernova
https://en.wikipedia.org/wiki/Type_II_supernova
https://astronomy.swin.edu.au/cosmos/s/supernova
https://astronomy.swin.edu.au/cosmos/S/supernova+classification
http://hyperphysics.phy-astr.gsu.edu/hbase/Astro/snovcn.html
https://esahubble.org/wordbank/supernova/
https://lweb.cfa.harvard.edu/~pberlind/atlas/htmls/snstars.html
https://www.rochesterastronomy.org/supernova.html
PrefixExample  
SNSN UDS10Wil 

Referenced by pages:
3C 397
absorption line
abundances
age-metallicity relation (AMR)
age-velocity-dispersion relation (AVR)
All Sky Automated Survey (ASAS)
All Sky Automated Survey for SuperNovae (ASAS-SN)
alpha element
alpha process (α process)
alpha-enhanced
aluminum (Al)
anisotropy
Antlia SN Remnant
Asiago Supernova Catalog (B/SN)
Astrocats
AT2018cow
ATLAS survey
Barnard's Loop
Betelgeuse
Big Bang nucleosynthesis (BBN)
blastwave
cadence
Calán/Tololo Supernova Survey
calcium-rich gap transient (ca-rich gap transient)
Carnegie Supernova Project (CSP)
Cassiopeia A
CFHTLS
Chandrasekhar limit
chemical equilibrium (CE)
common envelope (CE)
Cooper pair
core collapse
core collapse supernova (CCSN)
Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS)
cosmic dust
cosmic gamma ray background (CGB)
cosmic rays (CR)
cosmological time dilation
Crab Nebula (M1)
Cygnus Loop
dark energy (Λ)
Dark Energy Survey (DES)
Deep Lens Survey (DLS)
Deep Underground Neutrino Experiment (DUNE)
delay time distribution (DTD)
Eddington luminosity
ejection
electron capture
electron capture supernova
emission line
EROS
ESSENCE
Eta Carinae (η Car)
fast blue optical transient (FBOT)
FIRE Simulations
foe
fusion
G1.9+0.3
gamma-ray burst (GRB)
gravitational wave (GW)
gravitational wave spectrum
GRB 060505
GRB-supernova (GRB-SN)
guest star
GW170817
habitable zone (HZ)
high-energy astrophysics (HEA)
high-velocity star
Hubble diagram
hydrodynamics
hypervelocity star (HVS)
IceCube
interstellar medium (ISM)
iron peak element
ITEP-SAI Supernova Light Curve Catalogue
Kamioka Observatory
Kepler's Supernova
kilonova (KN)
LaSilla-QUEST Variability Survey (LSQ)
Lick Observatory Supernova Search (LOSS)
light curve
light echo
low-surface-brightness galaxy (LSB galaxy)
luminous blue variable (LBV)
luminous red nova (LRN)
magnesium (Mg)
magnetorotational supernova (MR-sn)
mass transfer
Medium Deep Survey (MDS)
Messier 100 (M100)
Messier 74 (M74)
metal
metallicity (Z)
Milky Way (MW)
Milky Way chemical evolution
MOSFiT
near-Earth supernova
Nearby Supernova Factory (NSNF)
neon (Ne)
neutrino (ν)
neutrino observatory
neutron capture
neutron rich
neutronization
NGC 6946
NGC 7331
nickel (Ni)
nitrogen (N)
nova (N)
nuclear statistical equilibrium (NSE)
nucleosynthesis
optical transient (OT)
p-process
pair production
pair-instability supernova (PISN)
Palomar Transient Factory (PTF)
Pan-STARRS
Pantheon
PESSTO
PHOENIX stellar model
phosphorus (P)
pipeline
plate
Population III (Pop III)
post-main-sequence star
PROMETHEUS/VERTEX
PSR B0950+08
pulsar wind nebula (PWN)
Puppis A
radiation pressure
radio supernova (RSN)
radioactive decay
radioactivity
rare designator prefixes
redshift survey
relic
Roman Space Telescope (RST)
rp-process
RT instability
Rubin Observatory (VRO)
Scorpius-Centaurus Association (Sco-Cen)
shock wave
silicon (Si)
SN 1572
SN 185
SN 1987A (1987A)
SN 1998bw
SN 2014J
star count
star formation (SF)
star formation feedback
stellar age determination
stellar population
stripped star
subgrid-scale physics
sulfur (S)
superluminous supernova (SLSN)
Supernova Cosmology Project (SCP)
supernova designator
supernova impostor
Supernova Legacy Survey (SNLS)
supernova light curve (SN light curve)
supernova progenitor
supernova remnant (SNR)
supernova survey
supershell
Swope Supernova Survey (SSS)
templates
thermal dust emission
three dimensional model
time dilation
time-delay cosmology
time-domain astronomy
tired light
titanium (Ti)
transient (AT)
transient astronomy
Transient Name Server (TNS)
Transiting Exoplanet Survey Satellite (TESS)
turbulent pressure
Type Ia supernova
ULTRASAT
Vela supernova remnant
velocity kick
velocity-metallicity relation
WISeREP
WR 104

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