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- W2082417428 abstract "view Abstract Citations (66) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Structure of the X-ray source in the Virgo cluster of galaxies. Gorenstein, P. ; Fabricant, D. ; Topka, K. ; Tucker, W. ; Harnden, F. R., Jr. Abstract High-angular-resolution observations in the 0.15-1.5-keV band with an imaging X-ray telescope shows the extended X-ray source in the Virgo cluster of galaxies to be a diffuse halo of about 15 arcmin core radius surrounding M87. The angular structure of the surface brightness is marginally consistent with either of two simple models: (1) an isothermal (or adiabatic or hydrostatic) sphere plus a point source at M87 accounting for 12% of the total 0.5-1.5-keV intensity or (2) a power-law function without a discrete point source. No evidence for a point source is seen in the 0.15-0.28-keV band, which is consistent with self-absorption by about 10 to the 21st power per sq cm of matter having a cosmic abundance. The power-law models are motivated by the idea that radiation losses regulate the accretion of matter onto M87 and can account for the observed difference in the size of the X-ray source as seen in the present measurements and at higher energies. Publication: The Astrophysical Journal Pub Date: September 1977 DOI: 10.1086/182519 Bibcode: 1977ApJ...216L..95G Keywords: Astronomical Models; Galactic Clusters; Galactic Structure; X Ray Sources; Angular Resolution; Brightness; Emission Spectra; Point Sources; Radiant Flux Density; Spaceborne Astronomy; Astrophysics full text sources ADS | data products NED (1)" @default.
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- W2082417428 date "1977-09-01" @default.
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- W2082417428 title "Structure of the X-ray source in the Virgo cluster of galaxies" @default.
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