Long-term studies with the Ariel 5 ASM. II - The strong Cygnus sources
1979; IOP Publishing; Volume: 233; Linguagem: Inglês
10.1086/157395
ISSN1538-4357
AutoresS. S. Holt, L. J. Kaluzienski, E. A. Boldt, P. J. Serlemitsos,
Tópico(s)Particle Accelerators and Free-Electron Lasers
Resumoview Abstract Citations (57) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Long-term studies with the Ariel 5 ASM. II. The strong Cygnus sources. Holt, S. S. ; Kaluzienski, L. J. ; Boldt, E. A. ; Serlemitsos, P. J. Abstract The three bright 3-6 keV X-ray sources in Cygnus are examined for regular temporal variability with a 1300 day record from the Ariel 5 All-Sky Monitor. The only periods consistently observed are 5.6 days for Cyg X-1, 11.23 days for Cyg X-2, and 4.8 hours for Cyg X-3. The 78.4 day period of Kemp, Herman, and Barbour for Cyg X-1, the 9.843 day period of Cowley, Crampton, and Hutchings for Cyg X-2, and the 16.75 day period of Holt et al. for Cyg X-3 are not confirmed. Publication: The Astrophysical Journal Pub Date: October 1979 DOI: 10.1086/157395 Bibcode: 1979ApJ...233..344H Keywords: Binary Stars; Cygnus Constellation; Satellite-Borne Instruments; Variable Stars; X Ray Sources; Ariel 5 Satellite; Autocorrelation; Data Processing; Light Curve; Long Term Effects; Periodic Variations; Spectrum Analysis; X Ray Spectra; Astrophysics; Periods:X-Ray Binaries; X-Ray Sources:Variations full text sources ADS | data products SIMBAD (5) Related Materials (1) Part 1: 1979ApJ...227..563H
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