skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Extreme ultraviolet spectroscopy of the Seyfert 1 galaxy Markarian 478

Abstract

The Seyfert 1 galaxy Mrk 478, observed during the EUVE all-sky survey, is the brightest EUV source among its class. The SW spectrum of this object shows evidence of discrete emission, although this interpretation is tentative, since the source spectrum must be extracted against a bright background. If the EUV flux is, in fact, composed partly of line emission, the authors attribute the discrete structure to emission from a collision-driven plasma at temperatures {approx_gt} 10{sup 6} K. In this context, they discuss some of the constraints imposed on the emission-line region by this observation.

Authors:
 [1]; ; ; ; ;  [2]
  1. Lawrence Livermore National Lab., CA (United States)
  2. Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
106583
Report Number(s):
UCRL-JC-121090; CONF-9503167-2
ON: DE95016618; TRN: AHC29525%%82
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 1995 International Astronomical Union (IAU) colloquium #152 on astrophysics in the extreme ultraviolet, Berkeley, CA (United States), 27-30 Mar 1995; Other Information: PBD: 26 Jun 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; SEYFERT GALAXIES; EXTREME ULTRAVIOLET SPECTRA; RADIATION FLUX; EMISSION SPECTRA; DATA ANALYSIS; COSMIC RADIO SOURCES; ELECTRON TEMPERATURE; GALAXY NUCLEI; MASS DISTRIBUTION; COSMIC GASES

Citation Formats

Liedahl, D A, Paerels, F, Hur, M Y, Kahn, S M, Fruscione, A, and Bowyer, S. Extreme ultraviolet spectroscopy of the Seyfert 1 galaxy Markarian 478. United States: N. p., 1995. Web.
Liedahl, D A, Paerels, F, Hur, M Y, Kahn, S M, Fruscione, A, & Bowyer, S. Extreme ultraviolet spectroscopy of the Seyfert 1 galaxy Markarian 478. United States.
Liedahl, D A, Paerels, F, Hur, M Y, Kahn, S M, Fruscione, A, and Bowyer, S. 1995. "Extreme ultraviolet spectroscopy of the Seyfert 1 galaxy Markarian 478". United States.
@article{osti_106583,
title = {Extreme ultraviolet spectroscopy of the Seyfert 1 galaxy Markarian 478},
author = {Liedahl, D A and Paerels, F and Hur, M Y and Kahn, S M and Fruscione, A and Bowyer, S},
abstractNote = {The Seyfert 1 galaxy Mrk 478, observed during the EUVE all-sky survey, is the brightest EUV source among its class. The SW spectrum of this object shows evidence of discrete emission, although this interpretation is tentative, since the source spectrum must be extracted against a bright background. If the EUV flux is, in fact, composed partly of line emission, the authors attribute the discrete structure to emission from a collision-driven plasma at temperatures {approx_gt} 10{sup 6} K. In this context, they discuss some of the constraints imposed on the emission-line region by this observation.},
doi = {},
url = {https://www.osti.gov/biblio/106583}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 26 00:00:00 EDT 1995},
month = {Mon Jun 26 00:00:00 EDT 1995}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: