Discovery of x-ray emission associated with the gum nebula

D. A. Leahy, John Andrew Nousek, G. Garmire

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The Gum Nebula was observed by the A-21 LED proportional counters on the HEAO-1 satellite as part of the all-sky survey. We report the first detection of X-ray emission associated with the Gum Nebula. Soft X-ray spectra were constructed from the A-2 LED PHA data. Single temperature Raymond-Smith models were fitted to the observed spectra to yield temperature, column density and emission measure. The temperature is ≈6 × 105 K, the column density ≈4 x 1020 cm-2, and the emission measure ≪5 cm-6 pc. The X-ray and optical properties of the Gum Nebula are consistent with a supernova remnant in the shell stage of evolution, which was the product of an energetic (3 × 1051 ergs) supernova explosion which occurred about 2 × 106 yr ago.

Original languageEnglish (US)
Pages (from-to)561-566
Number of pages6
JournalAstrophysical Journal
Volume385
Issue number2
DOIs
StatePublished - Feb 1 1992

Fingerprint

Gum nebula
light emitting diodes
HEAO 1
x rays
temperature
proportional counters
supernova remnants
optical property
erg
supernovae
explosions
explosion
energetics
shell
optical properties
products

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Leahy, D. A. ; Nousek, John Andrew ; Garmire, G. / Discovery of x-ray emission associated with the gum nebula. In: Astrophysical Journal. 1992 ; Vol. 385, No. 2. pp. 561-566.
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Discovery of x-ray emission associated with the gum nebula. / Leahy, D. A.; Nousek, John Andrew; Garmire, G.

In: Astrophysical Journal, Vol. 385, No. 2, 01.02.1992, p. 561-566.

Research output: Contribution to journalArticle

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