The 1989 outburst of V404 Cygni: A very unusual x-ray nova

Conference · Sun Jan 01 04:00:00 EST 1989

DOI:https://doi.org/10.1007/3-540-53500-4_162· OSTI ID:7148923

Wagner, R M; Collins, G W; Bertram, R ^[1]; Starrfield, S ^[2]; Cassatella, A; Gonzalez-Riestra, R; Shrader, C; Sonneborn, G ^[3]; Kreidl, T J ^[4]

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1. Ohio State Univ., Columbus, OH (USA). Dept. of Astronomy
2. Los Alamos National Lab., NM (USA) Arizona State Univ., Tempe, AZ (USA)
3. National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center
4. Lowell Observatory, Flagstaff, AZ (

On May 22, 1989, the Japanese Ginga Team discovered a new x-ray source that was cataloged as GS 2023+338. This source was subsequently identified as coincident in position with a previously known nova cataloged as V404 Cygni. Its last recorded outburst was in 1938 when it rose to about 12th mag. Spectroscopic data were obtained and confirmed the nature of the outburst. Additional ground based data were obtained by us at CTIO and the VLA. The x-ray behavior of this object has been reported to be very unusual and it reached a peak of about 17 crab about one week after discovery. Since then it has varied widely in magnitude at all wavelengths at which it has been studied. We present a brief summary of the observations that have been obtained up to the time of the meeting and shortly thereafter. 5 refs., 3 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/MA
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7148923
• Report Number(s): LA-UR-90-875; CONF-8906225--4; ON: DE90008935
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RAY SOURCES
COSMIC X-RAY BURSTS
COSMIC X-RAY SOURCES
DATA
ERUPTIVE VARIABLE STARS
EXPERIMENTAL DATA
INFORMATION
NOVAE
NUMERICAL DATA
SPECTRA
STARS
VARIABLE STARS
X-RAY SPECTRA