The evolution of the 1984 outburst of the transient X-ray source 4U 1630 - 47

Details The evolution of the 1984 outburst of the transient X-ray source 4U 1630 - 47 The evolution of the 1984 outburst of the transient X-ray source 4U 1630 - 47

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...304..664p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 304, May 15, 1986, p. 664-670.

Astronomy and Astrophysics

Astronomy

41

Binary Stars, Spaceborne Astronomy, Stellar Luminosity, Stellar Mass Accretion, Temporal Distribution, X Ray Sources, Exosat Satellite, Mass To Light Ratios, Spectral Energy Distribution

Scientific paper

The results of a series of EXOSAT observations of the X-ray transient 4U 1630 - 47 during an outburst in 1984 are presented. The source decayed over an interval of about 100 days from a maximum 1-50 keV luminosity of about 2.8 x 10 to the 38th to about 4 x 10 to the 36th erg/s (for an assumed distance of 10 kpc). The 1-50 keV spectrum was best represented by a soft Wien-like spectrum with a temperature about 1 keV and a high-energy power-law tail. The relative contribution of the soft component to that of the high-energy power law decreased by atleast a factor of about 2 as the overall luminosity decreased. When the source was at its maximum observed luminosity, short time scale 7 percent intensity variations (1-7 keV) were seen with a characteristic time scale of about 20 s. The shortest time scale variability detected was about 50 ms. A 10-arcsec position obtained using an imaging telescope excludes a previously suggested optical counterpart. The spectral properties of 4U 1630 - 47 are reminiscent of those of the black hole candidate Cyg X-1 when it evolves from a high to a low state.

Affiliated with

Also associated with

No associations

Rating

The evolution of the 1984 outburst of the transient X-ray source 4U 1630 - 47 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 The evolution of the 1984 outburst of the transient X-ray source 4U 1630 - 47, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The evolution of the 1984 outburst of the transient X-ray source 4U 1630 - 47 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1773159