QSR J1819+3845
id:
qsr-j1819-3845-188-15717705
title:
QSR J1819+3845
text:
QSR J1819+3845 is a quasar notable for being the most variable known extragalactic radio source. This quasar shows variations of factors of four or more on a timescale of hours. The variations have been shown to be due to scattering in the interstellar medium (ISM). This quasar furnished the elegant proof of the role of scattering due to the ISM, or interstellar scintillation, by showing a time delay in arrival between the signal at widely spaced telescopes. Interstellar scintillation is the obs
brand slug:
wiki
category slug:
encyclopedia
description:
Galaxy in the constellation Hercules
original url:
https://en.wikipedia.org/wiki/QSR_J1819%2B3845
date created:
2004-08-20T12:51:50Z
date modified:
2024-09-09T00:35:49Z
main entity:
{"identifier":"Q1003210","url":"https://www.wikidata.org/entity/Q1003210"}
image:
fields total:
13
integrity:
15