Correlation between X-ray intensity and radio outbursts of Cygnus X-3

Details Correlation between X-ray intensity and radio outbursts of Cygnus X-3 Correlation between X-ray intensity and radio outbursts of Cygnus X-3

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...433..350w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 433, no. 1, p. 350-356

Astronomy and Astrophysics

Astronomy

33

Radio Astronomy, Radio Bursts, Radio Stars, Spaceborne Astronomy, Stellar Luminosity, Stellar Mass Accretion, X Ray Astronomy, X Ray Stars, Correlation, Flux Density, Ginga Satellite, Light Curve, Luminous Intensity

Scientific paper

The relationship between the X-ray flux (1-20 keV) and the radio flux density (S and X bands) of Cygnus X-3 is investigated during a 4.5 yr interval, spanning 1987 March-1991 September. This period included seven strong radio outbursts with flux densities greater than 5 Jy at S band. All radio flares with maximum flux density greater than 0.5 Jy, including the seven strong radio outbursts, occurred when the 1-6 keV X-ray flux, averaged within 5 days before and after the peak of the radio flare, was greater than 0.37 counts/s/sq cm, which was corrected for the 4.8 hr intensity modulation. These X-ray fluxes correspond to a high state with a luminosity of roughly 1038 ergs/s at 8.5 kpc, implying that a very high accretion rate induces the radio flares. However, no simultaneous increase of X-rays during the radio outburst was detected. This fact suggests that the direct cause of the radio outbursts is some other process, during the high accretion rate, such as a gradual storage and a sudden release of energy by a twisting magnetic field in the accretion process. Population distributions of the mean X-ray flux (1-6 keV) and the X-ray softness ratio (1-6 keV/6-20 keV) was also studied, and they indicated the existence of two distinct states, i.e., high (soft) and low (hard) states. This fact suggests a bimodal behavior of the accretion disk.

Affiliated with

Also associated with

No associations

Rating

Correlation between X-ray intensity and radio outbursts of Cygnus X-3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Correlation between X-ray intensity and radio outbursts of Cygnus X-3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlation between X-ray intensity and radio outbursts of Cygnus X-3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1788706