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Light echo

A light echo is a physical phenomenon caused by light reflected off surfaces distant from the source, and arriving at the observer with a delay relative to this distance. The phenomenon is analogous to an echo of sound, but due to the much faster speed of light, it mostly manifests itself only over astronomical distances.

Examples, Quasar light and ionisation echoes & Gallery

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Examples

V838 MonocerotisHubble Space TelescopeLight yearsSupernovaeEarth
21 related topics

Quasar light and ionisation echoes

Hanny's VoorwerpCelsiusAGNKevin SchawinskiGalaxy Zoo
9 related topics

Gallery

CassiopeiaJWSTNIRCam
3 related topics

Explanation

Interstellar dustEllipsoid
2 related topics

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Explanation

Examples

Quasar light and ionisation echoes

Gallery

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Map overview Semantic statistics

Light echo

Nodes51
Edges50
Triples51
Avg. degree1.96
Density0.039216
Components1

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Light echo

Top relations

related to Quasar light and ionisation echoes · 17
Light echo → After, AGN, Because, Celsius, Chris Lintott, From, Galaxy Zoo, Green, Hanny's Voorwerp, HsV, IC, Kevin Schawinski, Since, The, Voorwerp, Voorwerpjes, We
related to Supernovae · 9
Light echo → An, Astronomers, By, Earth, Identification, Its, SN, The, Using
related to Cepheids · 5
Light echo → Cepheid, European Southern Observatory, Light, Pierre Kervella, RS Puppis
related to Explanation · 5
Light echo → Although, As, Because, In, Light
related to Gallery · 5
Light echo → Cassiopeia, Eta CarinaeLight, JWST NIRCam, JWST NIRCamAnother, Light
related to External links · 4
Light echo → Animation, Hunt, Join, Supernova Light Echoes
see also · 3
Light echo → Cherenkov, Supermassive, Zwicky
is a · 2
Light echo → object known as Hanny's Voorwerp, physical phenomenon caused by light reflected off surfaces distant from the source

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Important terminology

light echo echoes reflected earth supernova dust study source example ellipsoid nova observer distance flash quasar supernovae cassiopeia first speed

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Light echois aphysical phenomenon caused by light reflected off surfaces distant from the source0.90text
Light echois aobject known as Hanny's Voorwerp0.90text
a nova is reflected off intervening interstellar dust which may or may not be in the immediate vicinity of the source of the lightinstance ofExplanationLight echoes are produced when the initial flash from a rapidly brightening object0.80text
Light echorelated to CepheidsLight0.60section
Light echorelated to CepheidsCepheid0.60section
Light echorelated to CepheidsRS Puppis0.60section
Light echorelated to CepheidsPierre Kervella0.60section
Light echorelated to CepheidsEuropean Southern Observatory0.60section
Light echorelated to ExplanationLight0.60section
Light echorelated to ExplanationBecause0.60section
Light echorelated to ExplanationIn0.60section
Light echorelated to ExplanationAlthough0.60section

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