Crab (unit)
id:
crab-unit-262-11762132
title:
Crab (unit)
text:
A Crab is a standard astrophotometrical unit for measurement of the intensity of Astrophysical X-ray sources. One Crab is defined as the intensity of the Crab Nebula at the corresponding X-ray photon energy. The Crab Nebula, and the Crab Pulsar within it, is an intense space X-ray source. It is used as a standard candle in the calibration procedure of X-ray instruments in space. However, because of the Crab Nebula's variable intensity at different X-ray energies, conversion of the Crab to anothe
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Crab_(unit)
date created:
date modified:
2024-04-03T19:13:35Z
main entity:
{"identifier":"Q5180211","url":"https://www.wikidata.org/entity/Q5180211"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/0/00/Crab_Nebula.jpg","width":3864,"height":3864}
fields total:
13
integrity:
14