The unusually soft X-ray spectrum of LMC X-3

Abstract

view Abstract Citations (171) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The unusually soft X-ray spectrum of LMC X-3. White, N. E. ; Marshall, F. E. Abstract Spectral studies of LMC X-3 using the HEAO 1 A-2 experiment and the Einstein Solid State Spectrometer show that the X-ray spectrum is extremely soft relative to the vast majority of galactic accretion-driven X-ray sources, but similar to that of black hole candidates in their 'high state'. Rapid approximately 1 s flickering comparable to that seen from Cyg X-1 in its low state was not detected. In the 1977-1979 interval LMC X-3 was for most (if not all) of its time in a 'high state'. The fact that several other steady and transient X-ray sources also have similarly soft X-ray spectra and should be regarded as potential black hole candidates is noted. The spectra of these sources are not well described by any one simple model. Publication: The Astrophysical Journal Pub Date: June 1984 DOI: 10.1086/162104 Bibcode: 1984ApJ...281..354W Keywords: Binary Stars; Black Holes (Astronomy); Stellar Spectra; Variable Stars; X Ray Sources; Accretion Disks; Heao; Magellanic Clouds; X Ray Spectra; Astrophysics full text sources ADS | data products SIMBAD (3)